Wallpaper author:
Dev Prana
09 Mar 2026
LDN 1217, and friends in Cepheus
This fascinating field in Cepheus features the the dark nebula LDN 1217 (aka Barnard 175). LDN 1217 is a Bok globule - a region where dust condenses to form protostars. The dark nebula is dimly illuminated by ultraviolet light, yielding a reddish glow characteristic of Extended Red Emission nebulae (EREs). Approx. 20 hours of Ha+LRGB data from the Telescope Live remote observatory in Almeria, Spain (SPA1-CCD). Pre processing in Astro Pixel Processor, and the Post processing in Pixinsight with final touches in Paintshop Pro. Full details on Astrobin:
https://app.astrobin.com/u/devprana?i=rboeoq
Dataset from which the image was processed
LDN 1217
14 credit
- Type of target............................................................................................................................Reflection Nebula
- Camera............................................................................................................................FLI PL16083
- Target coordinates............................................................................................................................RA 333.25 Dec 70.75
- Hemisphere............................................................................................................................Northern
- Telescope location............................................................................................................................Spain
- Transient event............................................................................................................................No
- Observed on............................................................................................................................26 May 2022 - 19 Nov 2022
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Halpha | 576 | 4h | 25 |
| Blue | 624 | 4h20m | 25 |
| Green | 624 | 4h20m | 25 |
| Red | 576 | 4h | 25 |
| Luminance | 600 | 4h | 24 |