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Taken 1-Oct-16
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73 of 76 photos

NGC 1073

NGC 1073 is a barred spiral galaxy 55 million light years from us in Cetus. I was hoping to get more details out of the spirals, but I am happy to at least have caught the ring-like feature in the top spiral arm.

The flat calibration seems to be off ever so slightly. I guess it's time to shoot new flats and flat darks.

Technical details:
Date: Oct 1, 2016
Time: 1:00 am - 5:00 am
Camera: FLI ML-6303
CCD Temperature: -25 C
Optics: Celestron 8quot; EdgeHD (native)
Filter: AstroDon L
Light frames: 20x10 min
Dark frames: 50
Flat frames: 50
Flat darks: 50
Binning: 1x1
Guiding: LodestarX2 though ONAG (bin 2x2)
Mount: AP Mach 1
Dithering: Manual
Processing: Stacking and deconvolution in CCDStack, Curves, Levels in PSCS6.

Other notes:
I have been slowly transitioning to modern software. Earlier this year I moved from CCDOps to MaximDL for image acquisition, but I have been stuck in the year 2008 regarding the autoguider. PHD has been working well, and in my two attempts to use PHD2 absolutely nothing worked. At the end of a previous session, I gave PHD2 another shot, and sure enough, the issues I had seen earlier were entirely my mistake.
So for this session, I wanted to give PHD2 an honest shot. To make matters more interesting, I hadn't used this long focal length setup in a couple months, so I expected a bumpy night. To my surprise, PHD2 fired right up and did its thing all night long. It even looked like it was guiding better than the original PHD. Nice! The only thing that killed some time was trying to understand the framing of the Pelican shot. Because of the ONAG, things are mirrored, but because I was shooting on the West side of the meridian, there was an additional rotation present which stumped me - I almost religiously shoot on the East side of the meridian.
Very little wild life. I heard things, but it was off in the distance, so I saw absolutely nothing.
This was a pretty brutal but rewarding session. I left home at 6pm and got back home at 6:30am.

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NGC 1073