| OBJECT |
NGC 7331 and Stephan's Quintet (Quintet to lower left, including tidal tail from NGC 7319) (image is reduced-size | other sizes: medium , original) Distance: 40 million light years to NGC 7331; Up to 300 million light years for Stephan's Quintet galaxies |
|
| Telescope | Takahashi TOA-130F @ f/7.7 | |
| Mount | Takahashi EM200 Temma II | |
| Camera | QSI 690wsg @ -15C Night of First Light!!! | |
| Filters | Astrodon Tru-Balance I-Series LRGB Gen 2 | |
| Guider | SX Lodestar | |
| Settings | 7x10min L (bin1x1); 1x5min R, 2x5min ea GB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias) | |
| Date/Location Notes |
12 December 2017 - Las Cruces, NM Published as Astronomy Magazine Picture of the Day, 19 Sep 18 (screenshot). This image is LRGB - one of the R channel frames was lost (long story), so had to carefully manage color balance. |
