As of mid 2018 I am keeping a log to track general observatory goings on. Entries are in reverse chronological order.
6/11/2019 – Clear but moony last night. Started an Iris Nebula session at about 2AM as the moon set. Need to turn off autodate in CCDAP to set to run the next day. The focuser and the filter wheel might have not ended up connected. Focuser failed because couldn’t connect. Hmm. But guider seemed to flail around but, at least some, worked well. Got 21 total 5 minute LUM subs before the 4 AM astronomical dawn.
6/7/2019 – Cloudy. Eve of 6/6 clear after dinner party. Changes did not make for noticeable difference. Some pics look okay. Stuck with @focus3. Results ranged from 2269 @focus3 to 2295 @focus2. @focus3 results a little lower and tighter. Guiding did less plate solving but still slows the session down substantially. Some images had round stars.
6/6/2019– On both The Eyes.2 and Iris Nebula sessions I have fuzzy, oblong stars. I used @focus3 and it focused “successfully.” Tonight I hope to compare @focus2 results to @focus3.
I made some changes. I had binning in autoguider at 2X2 which would screw up the image scale calculations I used. So changed back to 1×1. Also had Reverse X checked for some reason in TSX. Should not be checked with CCDAP. I had 0 in the “Guider Time Sec” box in the CCDAP session and changed it to 5 secs. Upped the guider target ADU from 5,000 to 7,500.
Also changed focus from 3X3 to 1X1 and reran @focus3 recharacterization with results of search span of 79. I upped samples from 1 to 3. In CCDAP I changed focusing focus method to focus program chooses star from brightest star in FOV.
Forecast looks pretty good for tonight but clouds in neighborhood. Also dinner party. Hope to try all this out before too late.
6/5/2019 – Two almost successful sessions in a row. Everything worked on last night’s 5 minute sub unguided remote session except stars are now coming out decidedly oblong. Back to trying autoguided sessions. Instead of 10 minute I will try 5 minute subs and see how much guiding slows down the session. I turned down aggressiveness to 3 since can almost go without guiding. I don’t know if I have TheSkyX auto-reverse X figured out. If I recall it should be checked if running session for TSX but not if with CCD AutoPilot.
6/3/2019 – Mostly clear on night of 6/1 but we were camping in Cathedral Valley. Cloudy all the other nights including last night. New Moon tonight. Forecast is for clear. Heading back to SLC so will test the latest PC setup.
5/26/2019 – Probably managed to finish Coma B last night. First session since April 23. Month started with trip to Idaho, then lost the TeamViewer connection, then clouds with moon. Wet spring in Utah. More rain coming.
5/21/2019 – Got to Torrey on 5/16 and could not tell what was hanging the PC up so that TeamViewer would not connect. PC had also gone to sleep or into hibernation and the problem was no longer there when it woke up. Since then full moon and stormy. I put new hard drive in my Asus VivoBook and will switch the Torrey PC back to my robust HP Windows 7 machine. And have that machine reboot itself every day. Test day today.
5/9/2019 – No reason to hurry and drive to Torrey to reboot the PC there:
5/8/2019 – Out of town in Idaho at Greenfire Ranch for WWP May 2-5. Then on 5/6 TeamViewer seemed to have an error on Torrey PC end and now will not connect. PC is still broadcasting weather. Quarter moon (half illuminated) on 5/11.
4/29/2019 – Got some more Coma B on 4/24, but then clouds. No rain, a lot of clouds.
4/14/2019 – Cloudy, then travel, now moon.
4/10/2019 – Two days ago the HD part of my laptop’s SSHD drive went belly up. It was not a total surprise. A month ago my feet got caught in wires and the running laptop was pulled off the shelf under my desk and onto the hard floor. It didn’t like it and sometimes went through a disk repair routine. Finally the last repair dismounted the whole D: drive and it can no longer be found. I was backed up except for the last two acquisitions. I still have all the raw data but only have this low resolution processed version downloaded back from Facebook of M99. This was about 14 hours of LRGB.
Stormy week in Torrey this week.
4/6/2019 – Cloudy last night. Got some more darks from both cameras. Spent a lot of time processing M82, an experiment in HaRGB for a galaxy. I need sharp LUMs and could have used the Ha to blend into the red channel. Something was amiss from the start. Ha subs would not align. I used session flat subs and made new darks, but no joy. Maybe the darks were not right temp? I think I got the temp right. Yes, I did. Temp shows in in image information window in CCDAP. Next would be to get some sharp LUM frames and use Ha only to blend in the red channel. Tonight looks safely clear. Get another set of the Leo M99 galaxies and call it good on that one. The color frames on M82 aren’t much good either so I think I will let that one go.
3/31//2019 – finished up M82 for a total of 175 five minute frames–14.6 hours. Have not looked to see how many are good. Not guiding so will shoot away even if a little cloudy. Too cloudy and CCDAutoPilot will shut the session down.
3/25/2019 – Cloudy and moonish most of this month. Weather still unsettled. Got a little more color and more Ha on M82
3/13/2019 – Everything working but constantly cloudy. The West is having a stormy spring.
3/9/2019 – Last night blizzard then clear. But Torrey House Press board and staff at the Torrey house. Got a few shots for HaRGB of M82 on 3/7 before it clouded up.
3/6/2019 – I finished up the Owl Nebula on night of February 11. Somewhere not long after that it snowed. After it cleared the webcam went offline and I could not verify that there was not snow on the observatory dome. During this favorable moon phase it has been mostly cloudy. Processed the Surfboard Galaxy/Owl Nebula last night in Torrey.
2/9/2019 – Just got to Torrey this evening. To my surprise, the router was on and working. Since I could not access either computer remotely with TeamViewer and the router was not coming back on after its twice daily power recycling, I was expecting to see a dead router.
Instead, it looks like a power outage for a few hours was the problem. The observatory PC would have gone off immediately. The reason it did not boot back up when the power came back on like it is programmed to is that the web power switch controller appears to power back on with all switches in the off position. The laptop in the house was programmed to go to sleep after fifteen minutes in battery mode which cuts it off from Team Viewer and from the asleep mode did not perform its daily reboot. The BIOS on this laptop does not have the option to boot up when power comes on so I have set it to never go to sleep with or without power. The laptop battery will probably last 4 hours or more. I could try to make the web power switch accessible via the web, but I think the risk is low enough I won’t bother for now. I think it would involve creating a static ip address, perhaps creating a security risk and a bit over my head to set up.
2/2/2019 – Got unstuck. The key may have been to “synchronize” a few big stars into the tracking model. Sync was under the telescope start command or a nearby menu item. I went to Betelgeuse, which shows up unmistabably, used the telescope position buttons to center it while continuously taking photos under TheSkyX Camera/Focus tab. Then sync, then same for Rigel. From that point the automatic T-Point run worked perfectly. As per 1/30 below, previously it had not worked at all. It also helps to run the T-Point at 3X3 and to use the image scale suggestion feature in the T-Point setup. Ran 110 point T-Point successfully, then calibrated autoguider in vicinity of the Owl Nebula, the target I was after. Focusing worked first time too. Ran a CCDAutoPilot session on the Owl Nebula.
Separately I worked with Software Bisque forum’s Daniel Bisque to try to find out why TheSkyX goes into “Not Responding” mode whenever a Camera or Autoguiding window is first opened. He asked everything except the color and year of make of the shirt I was wearing but has no idea how to fix the issue.
Finally, a day or two ago the router in Torrey went offline and has not come back even after a couple of days of being powered off and on. Probably heading to Torrey by the 5th.
1/30/2019 – After some recent success (cloudy for the lunar eclipse earlier this month) I started running into problems where the dome was not aligning well enough for the guide scope to see out. Last night it cascaded to where the scope often could not see out either. I had noticed that for the Seagull Nebula the image link / plate solve was half a frame or so off. Then I noticed the T-Point model was gone. I tried to start a new one but that made things so bad that image link no longer worked.
Having to do manual image link ran into the continuing problem where TheSkyX goes into a “not responding” mode for several minutes whenever it has to open a new camera or autoguide window.
Stuck for now.
1/9/2019 – Returned to Torrey yesterday. I was gratified that the camera was not laying on the floor in pieces. The mount was in a very strange vertical position, obviously up against a limit. I do not know why. I released the manual clutch, re-positioned the mount and homed it successfully. The camera power cord had also become unplugged. I rerouted the camera cords and added a couple of loose tie wraps which helped for the particular position the camera is in when the mount is homed but may not in others.
Very high pressure just now with low clouds, almost fog and high clouds making for complete cloud cover. Forecast is same for next few days.
12/17/2018 – Worked on processing IC 63 – Cas Nebula last night. I ended up with 34 hours of 10 minute subs in Ha. Only 118 were usable. The processing took me about 7 hours with a number of setbacks. A few things learned:
- start with a full calibration. Sometimes darks and flats seem to do more harm than good. But last night the darks were essential for the color channels and helped immensely. Flats are introducing some junk. I used them in the color but not Ha. Ended up using darks in both.
- Save the stack right after sorting through images to keep in CCDStack
- Flat orientation remains highly suspect for PA West and PA East. They look the same to me. Maybe they are. If camera rotates then I guess they are and I don’t need both. Hmm, about time I thought that through.
- experiment required? No, I think the dust spots will have the same orientation to the object because the camera is rotated in the flip.
- the junk might be a slight difference in PA between lights and flats
12/12/2012 – A few cloudy nights. Clear tonight but camera still not connecting and now scope won’t slew. Probably tangled wires but surprising that the mount would not slew.
The comet pics came out pretty well.
12/8/2018 – Traveling for last few weeks including to HI and PA, plus a little weather. Not using observatory remotely unless I can drive to it the next day if necessary. Shooting Bubble Nebula again tonight. Guiding looks excellent. New moon last night.
Re previous post, the Reverse X does not apply when using CCDAP and should be unchecked. TheSkyX forum post about it is here.
By 10:15 or earlier the guide star became all distorted again. The Bubble is probably getting near the house.
Mostly successful session. Worrisome camera connect error at end, again.
Also experimented with acquiring shots of comet 46P/Wirtanen LRGB with autodarks. Paused CCDAP sesssion successfully. Will see if short results without any subs works.
11/18/2018 – The autoguider was also losing the guide star in TheSkyX alone. Smith suggested I go to Software Bisque for help. I did and I also went to Cloudy Nights. No response at all from Cloudy Nights but the Software Bisque staff and users jumped right on it. A few notes.
Here is an autoguider calculator at CCDWare. Great site. It may not help with losing the guide star but it may well be very helpful in improving guiding. By using the image scale of the guider setup it is possible to set up minimum and maximum moves so that the guider only corrects when needed and useful. Note there is a difference between maximum allowable movement and maximum allowable error.
There are many dangers.
I was confused about when to check the autoguider reverse X box in TheSkyX. It should be setup in the Camera Setup – preferences box to Auto Reverse X for GEMs and then the autoguider box disappears. I had seen the preference box but thought reversing was already automatic for a Paramount run by TheSkyX. I thought wrong. I hope checking this box helps.
Finally, it was suggested to come up with a “calibration library” to add darks and bias to the autoguide images. I will look into that.
Separately, this could be cool. In poking around on the Software Bisque TheSkyX Pro forum I noticed they are adding a “Live Stack” button in the camera tab. This is for star parties and could be just the ticket.
11/16/2018 – Still having problems with guiding using CCDAutoPilot. John Smith, the software author notes that the mount is not responding to the apparent CCDAP prompts but everything appears to be functional on TheSkyX side. I will experiment with dithering and guide star re-acquisition tonight using TSX alone.
11/14/2018 – Struggled last two weeks to get color shots of Cas Nebula IC 63. Guider did poorly and always had to waste time reacquiring the guide star after every dither. Only about a 50% success rate on slow sessions that could not complete. On 11/10 the rotator tangled in its own wires again. I was in Torrey to fix it. There have been intermittent disconnects with the camera which caused CCDAP to shut down. But, by running most nights I managed to get about 19 hours of Ha for IC 63 and, hopefully, some color.
I sprayed the camera USB/serial connections with WD 40 electrical connection cleaner. Maybe that helped. No aborts last night. I also set the USB power settings to stay always on.
Last night I decreased the dither in increased the tolerance for error to get started in CCDAP and that seemed to help a lot. The images I watched were even guiding better. Last night’s session completed even though thickening clouds apparently moved in. It remains to be seen if the reduced dither is adequate. I hope I got color 2X2 frames for the Bubble Nebula. Most of the Ha last night were clouded. Tonight forecast clear but going to wedding celebrations. Will see how autopilot does.
11/1/2018 – Weather and moon until recently. Got 28 out of about 40 ten minute H-alpha frames of IC 63 in Cassiopeia. Other 12 frames had fat stars. Guiding or focus, I am not sure. Transparency and seeing were poor. A bit too cloudy on night of 11/2.
10/18/2018 – Having connection problems on the 12th then hit the road for the Grand Canyon. Cloudy, rain and snow much of the time anyway. Clear tonight but muddy around observatory and I was up at 4AM, so need some sleep. Moon waxing gibbous.
10/12/2018 – Rainy week or 10 days. Everything working pretty well, otherwise. Remember to set the PA W or E for dawn flats. Comp frames did not work at all on the processing of Crescent Nebula. Not sure about why. Darks made holes in the color images. Flats introduced junk and vignetting that wasn’t in the light frames. Odd. Some of the junk came out in the dust and scratches step in the HaRGB Starizona processing.
9/20/2018 – Drove back down to Torrey to troubleshoot. Indeed, the lamp timer was not recycling the router because the timer’s slider switch had moved to always on. There are many dangers.
Severe clear, waxing gibbous moon. I decided to go for more Eagle Nebula and Crescent Nebula on the premise that if the problem was seeing it should show up differently. Last night was much better. Eagle gets sloppy stars and so does Crescent as they get too low on the horizon. Crescent still had a few double star stutters. I wonder if it went behind the eve of the house or such. I am going to let those two objects go until next summer. I have about five good hours of Ha on the Eagle. Now I am wishing I had thought to get 10 minute -10 degree darks and bias frames on some of those cloudy nights. There seems to be a little light leakage in the dark frames in the day and it is harder to hold temperature in the day. Tonight is forecast as clear again with good seeing.
9/16 -19/2018 – Internet down in Torrey. TeamViewer cannot connect. Evidence points to the lamp timer meaning the router is not getting a power reset. I expect that the lamp timer has a little slider switch on its side that sets it to be a timer or to stay on. If it is switched to “on” it would not reset.
9/15/2018 – Back in SLC and internet connection already lost. I don’t understand.
9/14/2018– Drove to Torrey for one night to see what is up with the internet connection. Found a router with internet light on but not connecting. Not clear why the lamp timer power offs and ons did not reset it. I doubled the number of daily resets from two to four.
Results: Everything worked first time. Guiding was tight and excellent for the first six 10 minute frames. Then, while I watched, the guider looked liked it had a few drinks. I let it go thinking maybe a little bad seeing drifted by. But it never got better.
I suppose I need to experiment. It will waste a few nights. Get a night of 10 minute frames without guiding and see if the mount picks up a jiggle? Or five minute frames all night that might actually be usable. If those work maybe I can mix them in with the 10s that worked. If five minute frames all night show no jiggle then it is safe to say autoguider. Then try with PHD2 either with the batch program and CCDAutoPilot or with TSX and PHD2 running at same time for some long series that won’t be dithered. Try the batch program first.
If PHD2 works then the question might be for Software Bisque about why their autoguider isn’t cutting it.
9/13/2018 – Still no internet connection. By now the router has powered off and on with the lamp timer several times and the PC has rebooted. Yet Something else is amiss.
It is becoming clear that it is hard to get the equipment in the observatory to work and even harder to get it all to work remotely. It is so difficult that it is not realistic to expect success. The only time it will work is when everything in the observatory is working (rare), it is not cloudy (sometimes), I am in Torrey without guests (less than a quarter of the time), and a small moon phase for everything but the Ha narrow band filter (half the time). What does that Venn diagram look like? How often will those things overlap? Not every month. It has been 5 months it has not all come together now. Right now all the ducks are in a row except I am in SLC and cannot get an internet connection.
I do not believe I have ever seen a forecast like that. Severe clear. And the TeamViewer page shows that the router in Torrey has gone offline. I won’t be connecting to the observatory PC until the lamp timer recycles it. Which will be about 5AM. A perfect night goes under the what-can-fail-will-fail bus.
Reasonable success. A couple of late images have stuttered stars but most are usable. I got the RGB’s for the Eagle Nebula. Need some more greens for the Crescent. Then at least 3 nights (I only have until about midnight before the Eagle flies to close to Boulder Mountain) of Ha for the Eagle. I will gather more Ha for the Crescent along the way. I will have a lot of Crescent.
9/10/2018 – Good news from John Smith at CCDAutoPilot:
What may have happened is this. A session abort [due to weather] was in process which, among other things, parked the telescope. The rest of the abort process continued properly. Then, there was a clearing which may have attempted to restart the already aborted session. The non connection… Error 200 may have referred to the mount.
While this is messy, I don’t think there is a problem with your system.
I will try to start getting some Ha of Eagle Nebula until it gets too low around 12:15 and then back to the Crescent Nebula until about 4:30. Then some dawn flats.
Result: Ran an entire night without system failure! @focus2 did not return an error although it missed the focus first time and wasted four or five frames. Autoguider calibrated okay. BUT, more than half of the frames had double stars. John Smith at CCDAutoPilot thinks the mount is not working smoothly. Makes sense although very surprising. Today I will check the RA and DEC tightness and re-balance. More likely too loose than too tight. Would explain disappointing T-Point/slew accuracy.
Got some Ha frames for Crescent Nebula and Eagle Nebula. Tonight I need to front run the moon and get some color 2X2 frames for each.
September 9, 2018 – CCDAutopilot crash might have been caused by connecting to the wrong ASCOM Pyxis driver. There is a universal Pyxis driver that connects but seems to cause the crash. There is another Pyxis driver that needed to be clicked down into properties and then Setup and then told to use COM3. That may be working . . .
I gave up on the PHD2 with the batch file interface as guider and reinstalled the remote head guider cam. Found out Orion Starshoot Autoguider (SSAG) will not work with TheSkyX in 64 bit mode, period. Wrestled with new settings for the autoguider and autofocuser. Seemed to be getting closer. Getting a good V curve on focus graph and using autoguider in both axis working best. Need to note the settings for both here.
I am skeptical that CCDAP can handle the flip. Had to be recalibrated and started over after the flip tonight. The dither is giving me a lesson. The scope moves then the autoguider reacquires the guide star and move it back into apparent center/same place but the scope has moved by the dither amount. I hope. Either that or the scope moves and the autoguider moves it back, which would be bad.
. . .
It clouded up but at 1:48AM CCDAP was going to try again and then apparently crashed. I got 6 frames out of 36. Progress of sorts but back to the forum again.
September 8, 2018 – It is good I am keeping this log or I might not be keeping my sanity. Another night wasted. Without the log I would not be able to recall what in the world went wrong that I could not acquire an image since May.
CCDAutoPilot initialized with PHD2 and PHD_broker closed. But it crashed after focusing whether those programs were open or closed and even after I returned CCDAutoPilot to its initial state. More on forum thread here. Focusing with @focus2 quit working, too. Way too damned finicky.
Another wasted night.
September 7, 2018 – CCDAutopilot will not initialize. Sending the error codes to CCDAutoPilot forum.
Then . . .
The whole camera train fell out of the telescope!
All the wiring caught it. I had it as tight as I could by hand but rotator wiring previously getting caught must have loosened it. Could have been disaster but everything seems to work except for software above. Used wrench tonight to tighten camera on telescope. Wiring seems to be arranged and stable. Sheesh. I don’t think this is related to CCDAP problem.
Stymied yet again, I am taking an hour of 10 min Ha subs without CCDAutoPilot through TSX and guided with PHD2. There is no ability to dither since PHD2 and TSX don’t know the other one is running and can’t communicate. I could take more but I can’t afford to stay up late tonight. Plus, I am not sure why I am taking these shots.
September 5-6 – Cloudy. It even rained a trace. Clear Dark Sky forecast wrong again.
September 4, 2018 – CCDAutoPilot renewed my father’s annual software license ($80) in my name. Good of them. Now to retry PHD2 broker package with all of the new features, including pre-slew, in CCDAP working.
No testing tonight. Cloudy.
|A private observatory near Capitol Reef park and the town of Torrey.|
September 3, 2018 – Ran a new T-Point automated mount calibration model with about 100 points. Seemed to work okay.
Success too with the hard drive clone. I did not replace the drive in the PC but I am glad to have a backup. I downloaded Macrium Reflect Free software on the observatory PC and used the instructions here.
The clone was the end of my short success streak. I installed the PHD2 broker package to work with CCDAutoPilot but no luck. There is a pre-slew function in CCDAutoPilot that seems critical but is greyed out. Waiting for advice from the support forum here. — Answer is there is a much buried–and separate process to execute–requirement to renew the CCDWare license annually. I knew about that but it was not asked for in the upgrade and there was no apparent place to renew. Plus the existing license and password is in my father’s name. I am now waiting on advice for that . . .
I downloaded PHD2 manual and saved it in Observatory Docs. The manual suggests using an ASCOM mount driver and if you have an on-camera ST-4 mount connection, as I have, then use the ASCOM mount driver in Aux Mount. I downloaded the appropriate ASCOM from Software Bisque as directed by ASCOM standards page. It seems to connect. In PHD2 the ASCOM driver in Aux Mount only functions to receive declination info so a calibration is not required for every new declination. Will see.
The new CCDAutoPilot upgrade did not keep track of the link needed on the Settings/Control Settings/Cloud Sensor/File Path. Somehow it is in the log but not in the software (if it is not there, how did the log find it??):
C:\Users\David\Downloads\AAG_CloudWatcher(v720)\AAG_CCDAP4.dat (I found the closest file to this name and type and used it)
I also could not find the log to send to the CCDAP forum. Hint was in the read this first thing: See Help/Data Organization for the default location of the log file. Answer =
2 AM. PHD2 wouldn’t calibrate. That is a first. Re-ran the brain/first time wizard and then it worked. Also had a sudden and long struggle with @focus2 in TheSkyX with a focus failed to converge error. I don’t know why that happens. Maybe something to do with not liking particular stars. Wrestled with these finicky components until 3AM.
Cloudy nights now forecast. I am hoping to get the autoguider working and to get some 10 minute or even some 20 minutes sub-frames this lunar cycle. Been awhile since I got anything usable.
September 2, 2018 The Torrey House Press staff is coming today so some of my night will be as a star guide. Fun enough. I only note it here to remind myself later of what actually happens to the time where I am not able to get images.
At this point before imaging I need to:
- clone the observatory hard drive
- set up to use PHD2 with CCDAutoPilot: √
- install Orion Starshoot Autoguider √
- install the respective batch code and set up. The instructions are in observatory docs and link to download here.
- Run a new T-Point calibration. This is not absolutely necessary but I think the calibration could be a lot more accurate than it is currently. Read up on and review how first.
- Entertain the THP staff with Torrey’s dark skies.
September 1, 2018 In Torrey. Spent about five hours trouble shooting the issue that Windows showed I had WiFi and internet connection but I still could not browse. There are apparently some common problems with a “winsock” stack that can be cleared but that was not it. It turned out to be the AVG antivirus software was itself corrupted and was blocking the connection, even with a “clean boot.” One clue was that I could browse in safe mode. Another random way to waste a night.
August 31, 2018 Lost web connection from SLC. TeamViewer worked but could not connect to web power switch, the webcam and Weather Underground weather station was offline. Another lost night. Previous two nights my uncle was in town and staying with us so no time to fiddle here.
August 28, 2018 Back in SLC, I tried to get 24 ten minute guided Ha frames of the Crescent Nebula in Cygnus. I got maybe 2 good frames. Three more have oblong stars. The rest were star streaks. The autoguider is unimpressive when it works at all and then it goes completely to hell after the first re-focus. CCDAutoPilot can’t handle it without frequent intervention. A guy might still have to stay up all night, or not refocus, or both. The fact that guiding was lost after about six frames makes refocus suspect. I am also concerned that the scopes are not always centered enough in the observatory opening and that the guide scope might get eclipsed by the dome.
- Set up TSX to save the autoguider frames to see if getting eclipsed by dome.
- Monitor CCDAutopilot to see what happens after re-focus
- temporarily set refocus for 20 minute intervals
- If inexplicably fails send log to forum for help
- See about using PHD2 with CCDAutoPilot
- John Smith at CCDWare says, “Yep! See the links under Help/Version History for version 5.09.8.”
It took 3 hours of wrestling to get the oh-so-finicky TheSkyX autoguider to calibrate. I did finally get one good ten minute frame with better stars than unguided. With that I went ahead with a CCDAutoPilot session but it failed. Do I go back to five minute frames unguided? I have a dark sky and can take long exposures but not without autoguiding. PHD might work but apparently not with CCDAutoPilot. Daily serving of frustration with a side of sleep deprivation.
Zero streak since May continues.
August 27, 2018 Mostly wrestled, until 1 AM with TheSkyX autoguider. Calibration was almost impossible and even when calibrated guiding made things much worse, not better. Morals of story:
- Select “Imager’s built-in autoguider” and with camera connected choose external guide head in Camera Setup/Settings.
- Needed T-adapter to get focused with remote guide head on ST-80.
- There is no place in CCDAutoPilot to choose PHD that I can see so working with finicky TSX settings is only choice.
- See what 10 minutes unguided looks like. 20 too. Then try with Y axis corrections only. Try only correcting every 60 seconds using autoguider exposure delay.
- If use internal guider, not remote guide head, then probably need to change telescope focal length in settings.
- Try calibration again with backlash set to 0, and
- DEC/x-axis(?) relay turned off,
- switch to SB’s “Direct Guide” instead of relay,
- calibrate in optimal place with one dominate star before moving to target,
- turn down aggressiveness from 10 to 6
- use camera image short exposure delay (2X autoguide image time) to give autoguider chance to recenter after image download.
- Trouble shoot tips TSX pp. 486
- I may still have a problem with too small an opening on the observatory shutters. Keep in mind if guiding is lost.
See notebook page 81 for other notes.
I was also having the usual problems with the rotator. I got an image link and set the position angle and FOVI to the image. CCDAutoPilot could not now find the ASCOM driver (WTF?). There was some sort of conflict suggested back when by John Smith at CCDWare that had me using the ASCOM driver instead of TheSkyX for the rotator. Common sense suggests that if everything else is run by TSX, the rotator should work from there too. I turned off a setting in TSX that homed the rotator every time it connected. Once on power up should be enough. Seemed to work with TSX in CCDAP last night. Question is how to set the rotator position angle. Is the CCDAP initialize enough or is an image link/sync PA required in TSX every time?
√ Check for ability to open shutters further and tighten drive wheel on dome.
Still no successful image acquisition since May.
August 26, 2018 With help of Daniel Bisque of Software Bisque, I troubleshot the failing COM connection for the rotator to a failed port on the 8 port serial to USB hub (equipment failure). The trouble-shooting was a brute, straight forward process of elimination. The support forum thread is here. The filter wheel was not connecting because the IFW controller box had been shut off (pilot error).
I also got the blue screen of death on the observatory PC for the first time. I PM’d Christopher Erickson, one of the moderators at Cloudy Nights, to see what particular software he thought I should be backing up. He said he probably had the Meridian Controls file structure stored away somewhere. He also recommended cloning the observatory PC hard drive asap with a new hybrid hard drive. In addition he sent some links to new dome controller sources here. His links show just a bare printed circuit board as the new solution. It promises to be quite involved. I hope to nurse the Meridian Controls along for a good while longer.
August 25, 2018– On site in Torrey. I have been trying to figure out if the C14 is worth using. Wave theory has it that resolution = wavelength/aperture. I seem to understand that this equation would hold except that light is both a wave and a particle/photon and so is a quantum thing. This introduces uncertainty where noise, as Poisson figured out, is the square root of the number of events (photons). More intuitively one has to ask about the quality of the optics in the old C14 versus that of the higher quality TEC-140. The C14 has the big aperture and so has the main element for resolution. But the TEC-140 is better glass. The question is then how to measure actual results. If it is the measured FWHM of the stars (found in CCDStack and DSS), then knowing the camera pixel size and focal length of the scope it is possible to measure the size of the resulting stars in an image. Some of my prior results seem to indicate the C14 was getting about 3.2 arcsecs and the TEC 140 is 4.3 arcsecs. Hmmm. Also it is possible to say what angle of space a pixel in each camera sees. The TEC 140 with the SBIG 10/XME is 1 pixel = 1.4 arcsecs. (see page 77 in my Moleskine log for equations) The C14 with the Canon 500D is 0.246 arcsecs and 0.431 arcsecs with reducer. If true, it is worth working with the C14 again next summer during galaxy season. On the other hand I understand that seeing blur is often greater than one arcsec so the C14 might be overkill. But then why would any telescope need to be bigger? Bigger sensors? As in sensor arrays?
If I do work with the C14 again I should plan on focusing often. If remote, focus every hour. If on site and ambitious I should focus and lock the mirror until the meridian flip, then unlock, refocus, relock. Compare how that works with unlocked frequent focusing. And get a lot of data. Also found a site that says Canon 500D optimal ISO is 1600. So go to that. I might also get a expandable saddle for the G-11 so can more easily side mount and try the C14 outside. Might be cool for viewing.
To get a lot of data and take advantage of Dad’s observatory capability, and thereby also get some sleep, use CCDAutoPilot (AP). AP only delivers FITS files, not camera RAW somehow. So start a new library of dark files for the Canon 500D. DSS can stack FITS files so I can use Dark Master to match temperatures of the dark files.
- Today I will switch scopes:
- check tightness of all fittings on SBIG camera train √ There is still the tiniest bit of play coming from somewhere. Seems intrinsic and probably okay.
- change the observatory “dome geometry” back (from Xt = 17 to Xt = 13) √ In Dome Setup
- take the Robofocus off the C14 and reinstall on TEC 140 √
- C14 parts are in a marked baggie in observatory. Should leave the Robofocus drive axis set screws loose until manually focused, first for eyepiece, then with camera. Otherwise manually moving focus knob strips the set screws. Once any set screws are set only move focuser with Robofocus. The Robofocus step motor cannot be moved manually. Don’t try to do it with focus knob.
- take down the C14 and stow in garage √
- put on TEC 140 √
- start with eyepiece to:
- see how T-Point calibration is and start new calibration if necessary. Big moon will help get established if necessary.√
- install camera train and balance√
- @focus2 with Robofocus√
- write down what hash marks show on the TEC-140 _____________
- get a few closed loop slews and start a new T-Point√
- SBIG remote head with ST80 √
- autoguiding setup in TSX (focus on Moon? Vega?)
- get some 10 minute darks at -12
- As of night of 8/25 not successful in getting filter wheel and rotator to connect.
Had idea to get a pier extension to see over the wall for planets. Already ordered before I check to see if will work. Having it delivered to Torrey post office. Stay tuned.
August 20, 2018– The NGC 6946 images from the 19th were all out of focus. Now I am running out of summer Milky Way season in which I want to get some HaRGB. Moon is out now but I will be taking off the C14 until next year without ever getting a usable capture. The 36 frames of NGC 6946 that I have are crummy, probably because not tight enough focus. Conclusion is that with the current C14 setup (BackyardEOS running the Canon DSLR on the C14) I need to be onsite to manually do the meridian flip and to unlock mirror, refocus, and re-lock the mirror. Next year for galaxy season I will consider creating a dark library of FITS files so that I can run CCDAutoPilot. With autopilot I can refocus often (and thereby go without locking the mirror?), automatically flip, shut down if it clouds up, and close down when the session is over.
August 2018- Early August a private star party with Lynn and Patrick DeFreitas. Lovely guests. C14 was a beast to observe through in the observatory. All ladder work right over the desk. And discovered Venus and Jupiter too low to see over the wall in the outside pier in the summer. Saturn and Mars also up. Later, because I was still getting oblong stars, I spent about three hours collimating the C14. Good two ladder workout. It made the stars a little better, I hope. Looked better visually and in pics. Painted the trim on the observatory. Now wishing I had used a zippier color like midnight blue. Kelsie Moore from NPR affiliate KUER came down with Aaron McMurray to get some video for the NPR program Science Friday. Radio West at KUER has started a Radio West Films where Kelsie is the film maker. Results expected next month. Kelsie was tough about staying up and getting the shots, mostly time lapse. I also did a time lapse. I expected to have a 30 second clip but ended up with three seconds. In addition to her dark sky work, Kelsie and Aaron set up elaborate lights and mics to interview me. Very smokey all month and often cloudy. Still virtually no rain. On 8/6 and 8/12 and 8/19 I tried to get some more data on NGC 6946, the Fireworks Galaxy.
July 2018- worked on M106. Short nights! Changed the dome’s geometry to better fit the C14 so that it could see out the shutter opening. I bought a new PC in part so I could leave my rugged, reliable Windows 7 HP laptop in Torrey. Removed the GFI in the garage that controlled the observatory power line. Both somewhat helpful in making remote internet connection more reliable. M106 results included oblong stars. I found the images unusable. Our week after new moon on July 12 was clouded out over with no rain. Achingly dry in Torrey.
June 2018– Kirsten and I traveled some in the Banjo in June including a trip to Idaho for the board meeting in Boise for Western Watersheds Project. At the end of the month we held the Torrey House Press board and staff retreat in Torrey. Moon, clouds, people. No photos.
May 27, 2018- With the C14 focused I discovered a still mysterious vibration problem. Photos were terrible with dancing stars and large objects like planets and the moon could be seen dancing around in the viewfinder. At Software Bisque I posted my problem on the Paramount ME support forum here. Daniel Bisque there was more than helpful, literally. Some of what he asked me to do to trouble shoot set me back substantially. What seemed to finally do the trick was lubricating the mount as Software Bisque’s video describes how here. Stars in photos are still slightly oblong. This troubleshoot took a long time. I had to leave Torrey and then lost my internet connection to do some of the troubleshooting requests I had from Bisque.
May 7, 2018 – Put the C14 on for the first time in Torrey. I could not get the focuser to work and had a extraordinary exchange on Cloudy Nights here to figure out what was wrong. I posted here about the Zen-like lesson of sitting with a problem and letting all the clues come to bear, from wherever they may.
May 15, put Canon Rebel on the C14
April 14, 2018 – Star party with friends/donors of The Nature Conservancy of Utah. Used the TEC 140 with 20mm wide angle eyepiece.