View Single Post
  #1  
Old 03-10-2019, 05:12 PM
Atmos's Avatar
Atmos (Colin)
Ultimate Noob

Atmos is offline
 
Join Date: Aug 2011
Location: Melbourne
Posts: 6,420
Full Moon NGC 253 (recolour balanced)

As I currently only had a OSC camera I've been trying to think of what kind of imaging I wanted to do over the full moon period from my suburban back yard and decided this would be the perfect time to try imaging a galaxy

NGC 253 is large enough and bright enough that I don't think the moon matters too much, I'd say my biggest killer at the moment is shooting with a F/10 (F/4 would make SNR easier) at 0.4"/pixel

Anyway, I'm pretty happy with how the 3.2 hours has come up so far. Ended up with a FWHM of 2" which isn't fantastic by any means but it's the best I've managed with this setup so far. Given how bright the background is even at F/10 I am thinking about dropping my exposure time from 5 min to 2 min, could yield sharper results and I'm still 10-15x read noise.

For pixel peepers

This is about as good as it's going to get until I add another 20 hours of exposure.
Attached Thumbnails
Click for full-size image (NGC253 IIS.jpg)
61.8 KB62 views

Last edited by Atmos; 05-10-2019 at 02:58 PM.
Reply With Quote