Annotated | 0bject | NGC 3972 3982 3990 3998 Galaxies in Ursa Major |
| Date | March 3, 2024 |
| Exposure | LRGB 20:20:20:20 (80 minutes, 1/2 crop) |
| Camera | STL11000M with AstroDon Gen II filters |
| Telescope | ASA 10N f/3.7 on AP900GTO CP3 |
| Guiding | Remote guide head with MiniBorg 50 mm |
| Processing | MaximDL, Photoshop CS6, Astronomy Tools, Topaz Denoise AI |
| Comments | Poor seeing (FWHM 4.25); acquired with CCD Commander from Animas, NM |