Thanks! It was hard getting out of a warm bed a little before midnight to travel 1.5 hours to this location. I was kind of lazy since my friend offered to drive. I also had some problems with my camera initially. The focus ring wasn’t working for manual focus until I re-attached the lens. That problem wasted a good 15 minutes fiddling with that.
Does your Pentax have the astrotrace functionality?
Well I wish I was that lazy…
Yes, I have the o-gps accessory that I got very cheap in like new condition (that’s the great thing about Pentax, everyone wants to get rid of them 
it definitely helps, but it doesn’t do miracles. 6 seconds is the upper limit on a 300mm lens, and even that already starts showing a bit of trailing. But certainly better than nothing
Here my version, monochrome, shot sunday.
Setup:
FS-60CB + 0.72x reducer: f4.2
Camera: 2600MM, L filter Antlia
Cheers,
Very nice. Any info on the equipment used and other tips that you might want to share?
Oh right. I’ve added the setup in my previous message.
Sorry.
Here is a 5-hour time-lapse from the nite of Jan31-Feb1, only makes sense in 4K.
RawTherapee \rightarrow FFmpeg
The comet is really booking!
Morgan Hill, CA
11:30PM January 31, 2023 — 04:10AM February 1, 2023 Local Time
Canon 90D
85\text{mm}\ \ f/\ 1.2:1\ \ \ \mathrm{L}
1121 \times 13\mathrm{s} @ f/2.8
I had my first bit of success with comet photography last night. 45x8sec exposures with a 35mm lens at f2.8 and Nikon D7100 at iso 1600. Stacked in DeepSkyStacker and further processed in darktable.
It’s cropped a bit, to reduce the fuzzy corners caused by (I think) the noticeable distortion of this lens causing the stars to not align properly.
Very far from perfect, but quite pleased anyway. 
The big orange thing at lower right is Mars.
