Wallpaper author:
Dan Crowson
17 Sept 2021
B252 - The Dolphin Nebula
Barnard 252 (LDN 1698, DOBASHI 7265 and others) is a large dark nebula located in Scorpius.
Luminance – 18x600s – 180 minutes – binned 1x1
RGB – 16x600s – 160 minutes each – binned 1x1
660 minutes total exposure – 11 hours
Imaged over 17 days from March to September, 2021 at the El Sauce Observatory (Rio Hurtado, Chile) with a FLI PL 9000 on a PlaneWave CDK24 at f/6.5 3974 mm.
This is a Telescope Live (https://telescope.live/) “One-Click Observation.” These are automated data collection sessions that run when the scopes are otherwise not in use.
LRGB - https://www.flickr.com/photos/dcrowson/51486514666/sizes/l/
Dataset from which the image was processed
Barnard 252
9 credit
- Type of target............................................................................................................................Dark Nebula
- Camera............................................................................................................................FLI ProLine PL9000
- Target coordinates............................................................................................................................RA 258.75 Dec -32.1833
- Hemisphere............................................................................................................................Southern
- Telescope location............................................................................................................................Chile
- Transient event............................................................................................................................No
- Observed on............................................................................................................................21 Mar 2021 - 09 Sept 2021
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Luminance | 750 | 4h10m | 20 |
| Green | 480 | 2h40m | 20 |
| Blue | 510 | 2h50m | 20 |
| Red | 660 | 3h40m | 20 |