| OBJECT |
Sadr (center star) surrounded by IC 1318 (image above is reduced-size | other sizes: medium , original) Distance: 1,800 light years to Sadr and 5,000 light years to IC 1318 |
|
| Telescope | Takahashi TOA-130F @ f/7.7 (FS-60C for RGB) | |
| Mount | Takahashi EM200 Temma II | |
| Camera | QSI 540wsg @ -15C | |
| Filters | Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen 2 | |
| Guider | SX Lodestar | |
| Settings | 5x20min Ha, 2x5min L (bin1x1); 2x5min ea RGB (bin1x1 - note RGB data is from FS-60C on 25 Dec 13); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias) | |
| Date/Location Notes |
24 November 2017 - Las Cruces, NM PUBLISHED in "Annals of the Deep Sky" - Volume 8!!!! (here) Cygnus area supergiant Sadr (also known as Gamma Cygni, γ Cygni, or γ Cyg) is the center bright star, together with the diffuse emission nebula IC 1318 that lies in the background (red and dark color). This image is LHaRGB, where Ha:R (80:20) was used for the Red channel, and L+Ha for Luminance. |
