IC 2177, The Seagull Nebula,
In Monoceros
This is a tough target! The version shown here (one of many) is a peculiar combination of an RGB image as the color information and an Ha-GB image as the luminosity layer. Not surprisingly, it looks overprocessed and the color is off, but the less processed versions were a lot worse!
Also known as the Gum 2 nebula, IC 2177 is very large (120 x 40 arcmin) and quite dim. It was an excellent test object for my Nikkor 180 mm manual telephoto lens.
| Date | 2003-02-05 |
| Optics |
Nikkor 180 mm lens at f/4 with ST-10XME CCD camera (Mandel adapter) at -15 °C piggy-backed on the A-P 1200 GTO mount. Guided with the ST-4 guider on a guide scope. |
| Exposure |
12 x 10 min H-alpha (1x1 binning); 5x10 (1x1 binning) and 4 x 10 min (2x2 binning) R, G, and B. SBIG filters in SBIG CFW-8 filter wheel. |
| Processing |
Raw frames debloomed with Wodaski's Debloomer plug-in. Stacked and RGB combined in MaxIm 3.09 with R=1.2, G=1.0, B=1.65 weighting. Registered in RegiStar. Stretched with levels and curves in PhotoShop 7.0. |