| OBJECT |
M57 - NGC 6720 (Ring Nebula) in HaRGB (image above is cropped 1.5x zoom | other sizes: medium , original) Distance: 2,300 light years |
|
| Telescope | Takahashi TOA-130F @ f/7.7 | |
| Mount | Takahashi EM200 Temma II | |
| Camera | QSI 540wsg @ -10C | |
| Filters | Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen 2 | |
| Guider | SX Lodestar | |
| Settings | 4x20min Ha (bin1x1); 1x5min ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias) | |
| Date/Location | 23 September 2013 - Las Cruces, NM Note: This object marked my first time going to 20 minute subs at long FL (1000mm). |
