Northern Trifid Nebula, NGC 1579

NGC 1579 in Perseus, LRGB 13.3 hrs, 2/7/2021

The observatory threw every thing wrong that could go wrong at me and I have not been able to get an image since early November. The first sets of color captures combined in such a horrible way that it made me wonder if I new which filter was which in the filter wheel. That is a tricky thing to figure out remotely. Turns out I had it right and the inability to make a workable RGB image remains unexplained. I even had a long online chat with the software developer of CCDStack. He had some usual good ideas that were subtle and subtler but no basic explanation of where things went off the rails. So, as is always a good idea, I just started over. I used 360 second 2X2 RGB frames with new calibration subs and masters. The LUM frames were not great but were workable with 10 minute unbinned subs, all unguided. The usable frames came to a total of 13.3 hours of exposure. I also re-ran, a couple of times, the mount tracking protocols including a 100 star T-Point calibration and a new PEC correction. Even if you don’t understand what all this means you get the point that running this thing is technical and demanding for the mere layman such as me.

The Northern Trifid Nebula is in Perseus but right on Auriga’s foot.

In spite of any ability to rationalize it, the hobby keeps me coming back.

Acquisition details here.

Mark Bailey, February 10, 2021

3 thoughts on “Northern Trifid Nebula, NGC 1579

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