M71, globular cluster
A loosely concentrated globular cluster, sometimes classified as a dense open cluster. M71 lies in a star-rich region of the Galactic plane, which can make it slightly difficult to identify.
General information
- Constellation
- Sagitta
- Category
- Clusters and stars
- Date
- 18 October 2023
Capture
- Total time
- 0h 30min
- Subframes
- 30s (30xCLS bin1), 30s (10xR bin2 + 10xG bin2 + 10xB bin2)
- Gain / Offset
- 125 / 30
- Calibration
- 50 library dark frames, 50 flat frames, 50 dark-flat frames, without bias frames
Equipment
- Telescope
- TS102 f/5.6
- Camera
- ASI294MM at -10ºC
- Filters
- CLS, R, G, B Astronomik 36mm
- Mount
- HEQ-5 Pro belt drive
- Guiding
- Guide scope 60mm f/4 + ASI224MC + PegasusAstro UCH + PPBMicro with PHD2
- Focuser
- ZWO EAF
- Filter wheel
- ZWO EFW 7pos
Processing and environment
- Processing
- Stacked and post-processed with PixInsight 1.8.9-3
- Acquisition
- NINA
- Location
- l'Ampolla, Tarragona
- Sky
- Bortle 4