Emission Nebula Sharpless 2-86 (NGC 6820) and Open Cluster NGC 6823
(click on image for larger size / full resolution):
Image acquisition and processing details:
| Telescope: | Takahashi Epsilon 180, f/2.8 |
| Mount: | Astro-Physics AP1200 |
| Camera: | SBIG ST-10XME cooled to -25C, internal guiding. |
| Filters, Exposure Times: | AstroDon TruBalance Generation 2 Red, Green, and Blue=60 min each (12x5 min each). AstroDon 3nm Hydrogen Alpha 390 min (39x10 min). Additional data was obtained but discarded. |
| Dates: | 10/30/08 (at Okie-Tex Star Party). H-alpha: Nov. 17 - Nov. 23, 2008 (from my back yard). |
| Moon Phase: | various. |
| Location: | RGB at Okie-Tex Star Party; H-alpha at Xanadu Observatory. |
| Software: | CCDCommander, MaximDL, FocusMax, TheSky, CCDInspector, CCDStack, Adobe Photoshop CS4. |
| Notes: | Zooming in to this image reveals numerous dark areas with interesting shapes. |