M81, M82 (Ha region extraction, processed with subtraction (Ha - R))

 Posted: Jun 17th, 2026
Show astrometry on hover
NGC
IC
HD
Technical Info
Telescope/Lens: Askar SQA 106 мм f/4.8
Camera: ZWO ASI 183 MC
Mount: Ioptron HAE 29 C
Guide Scope: Askar 52 мм F4
Guide Camera: ZWO ASI 120 MM mini
Software: SharpCap 4.0, Siril, GraXpert
Exposure:
61 x 300" ISO/Gain: 120 - RGB
45 x 300" ISO/Gain: 120 - zwo Ha 7 нм
Orange, Bortle 6 zone:
 Adygeya Stanica Dahovskaya, Russia
 Jun 3rd, 2026
8 h 50 m
6
Resolution: 3727x2467 px
Scale: 4278 KB

I added data in Ha, captured with a ZWO ASI 183 MM camera, and combined it with last year's material, which was shot with the color ZWO ASI 183 MC. After all, with light pollution like we have now, narrowband imaging still yields some results. Pixel math in Siril was used to add narrowband H-alpha (Ha) data to the broadband RGB image.

Add comment

Comments

There are no comments on this picture yet

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