NGC 2244 "Rosette"

 Posted: Feb 8th, 2025
Show astrometry on hover
NGC
IC
HD
Technical Info
Telescope/Lens: Объектив TTArtisan 500мм 6.3ED
Camera: ZWO ASI2600 Air
Mount: iOptron HEM15
Guide Scope: встроенный датчик
Guide Camera: SC2210
Software: SiriL, StarNet++, GraXpert
Accessories: ZWO ASIAir в камере, ZWO EAF
Exposure:
16 x 180" ISO/Gain: 101 - фильтр Svbony SV220
Red, Bortle 7 zone:
 Toksovo, Russia
 Feb 6th, 2025
48 m
683
Resolution: 3911x5233 px
Scale: 13951 KB
Suddenly, the sky cleared up.
I took out the TTArtisan 500mm 6.3ED to test it.
In the cold (around -10°C), the autofocus motor struggled to turn the focus ring—it only worked intermittently, so autofocus didn't function properly.
I never knew how to focus manually, and I still don't; the Bahtinov mask didn't help either. As expected, I didn't achieve focus.
Just in case, I shot NGC 2244 for testing. The stars bloated unacceptably, as expected—even StarNet didn't help.
It's too early to judge the optical quality; I still need to fine-tune the drive and get proper focus...
After adjusting the mount, I had no issues with guiding—drift was around 0.5-0.6".
At the end, I broke the remote and almost dropped it from the 5th floor. Had to use duct tape...
In the cold, the Wi-Fi on the remote glitches more often—I'll probably go back to using a cable.
Updated
  24 Feb, 2025
  59 m
First light with the setup, only the mount has been tested before. The camera is attached in the focuser with just one screw and no guide pins, causing a clear…
  21 Feb, 2025
  3 h 21 m
Added exposure time to the Rosette. Used a cheat technique—stars replaced with synthetic circles from StarNet. Stretched the histogram less. Bright spots from c…
  17 Feb, 2025
  2 h 24 m
I modified the focuser. Instead of a bunch of clamps, tubes, and brackets—just one 3D-printed part and a string (strings are everything!). I had to use a motor…
Current photo
  8 Feb, 2025
  48 m
Suddenly, the sky cleared up. I took out the TTArtisan 500mm 6.3ED to test it. In the cold (around -10°C), the autofocus motor struggled to turn the focus ring—…
Show changes
Add comment

Comments

Why didn't the mask help? It always helps) The problem is clearly something else)
9 Feb, 2025 Reply
Urmasx Replied to Oeswww
The issue was the frost and lack of time.
9 Feb, 2025 Reply

Comments are available only to registered users. Register or log in to leave a comment.