| Object: | M 5 |
| Date: | 2009-07-[17,21,22,24] |
| Scope, mount, camera: | 12.5" Newtonian, f/5.1, MAM50, ST-10XME |
| Filter, exposure time: | L = 25*180s, RGB = (12x12x12)*300s |
| Total exposure time: | 4h15min |
| 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. Note the large number of RR Lyrae type variable stars, recognisable by their green or purple appearance (red, green and blue filters were taken at different times). Image seeing 1.85". |