Wallpaper author:
Jared Greer
16 Jun 2025
Whirlpool Galaxy and Companion Galaxy NGC 5195
Interacting galaxy pair found in Canes Venatici. Imaged with HLRGB filters.
software: astro pixel processor, pixinsight, rc-astro, and photoshop.
Some notable techniques used: continuum subtraction (ha), narrowband colour mapper (ha), Image Blend x2 (once for ha and once for the luminance), HDRMT (luminance), range masking, LHE, unsharp mask, camera raw, stars rescreened in PS.
Dataset from which the image was processed
M51
9 credit
- Type of target............................................................................................................................Galaxy
- Camera............................................................................................................................QHY 600M
- Target coordinates............................................................................................................................RA 202.4696 Dec 47.1953
- Hemisphere............................................................................................................................Northern
- Telescope location............................................................................................................................Spain
- Transient event............................................................................................................................No
- Observed on............................................................................................................................26 Mar 2023 - 17 Jul 2023
Filter | Avg Exp (s) | Total Exposure | Subframes |
|---|---|---|---|
| Luminance | 88 | 1h56m | 79 |
| Red | 158 | 3h28m | 79 |
| Green | 150 | 3h18m | 79 |
| Blue | 122 | 2h40m | 79 |
| Halpha | 82 | 1h46m | 78 |