Annotated | 0bject | Cr 421 & Dolidze 9 Open clusters in Cygnus (Trumpler III 1 p n, IV 2p n, respectively) |
| Date | May 20, 2024 |
| Exposure | RGB 90 minutes (1.5 hours, full frame) |
| 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 | Excellent seeing (FWHM 2.64); acquired with CCD Commander from Animas, NM |