Wallpaper author:
Dan Crowson
18 May 2023
M12
M12 (NGC 6218) is a Shapley-Sawyer class IX (http://en.wikipedia.org/wiki/Shapley%E2%80%93Sawyer_Concentration_Class) globular cluster located approximately 15,700 light-years away in Ophiuchus.
Luminance – 17x300s – 85 minutes – binned 2x2
RGB – 18:15:21x300s – 90:75:105 minutes each – binned 2x2
335 minutes total exposure – 5 hours 35 minutes
Imaged May 15th, 16th and 17th, 2023 at the El Sauce Observatory (Rio Hurtado, Chile) with a QHY 600M on a PlaneWave CDK24 at f/6.5 3974 mm.
LRGB - https://www.flickr.com/photos/dcrowson/52907442394/sizes/l/
These are Telescope Live (https://telescope.live/) “One-Click Observation.”
Dataset from which the image was processed
M12
4 credit
- Type of target............................................................................................................................Globular Cluster
- Camera............................................................................................................................QHY 600M
- Target coordinates............................................................................................................................RA 251.8091 Dec -1.9485
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Chile
- Transient event............................................................................................................................No
- Observed on............................................................................................................................15 May 2023 - 18 May 2023
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Blue | 350 | 1h45m | 18 |
| Green | 250 | 1h15m | 18 |
| Red | 300 | 1h30m | 18 |
| Luminance | 300 | 1h25m | 17 |