| Object: | M 15 |
| Date: | 2009-09-[12,13,14] |
| Scope, mount, camera: | 12.5" Newtonian, f/5.1, MAM50, ST-10XME |
| Filter, exposure time: | L = 18*120s, GB = (12x14)*300s, R=23*120s |
| Total exposure time: | 3h32min |
| Location: | La Palma, Roque de los muchachos |
| Comments: | Data reduction with THELI, colour composition in PS. Resampled from 0.85"/pixel to 0.65"/pixel. Image seeing 1.95". A 180% enlargement showing the planetary nebula Pease 1 and also numerous variable (green and pink) stars can be found here. North is left and East is down. SDSS ugr colour calibration. |
