GLOBULAR CLUSTER M4 (NGC 6121)
This image includes the nebula Sharpless 2-9 in the upper left, and M4 in the lower right. It was taken with a hydrogen-alpha filter.
(click on image for larger size):
Image acquisition and processing details:
| Telescope: | Takahashi Epsilon 180 astrograph, f/2.8 |
| Mount: | Celestron CGE, remotely controlled with NexRemote. |
| Camera: | SBIG ST-10XME cooled to -20C, internal guiding. All images binned 1x1. |
| Filters, Exposure Times: | AstroDon 6nm Hydrogen-alpha 120 min (12x10 min each). |
| Dates (Universal Coordinated Time): | 13-May-2008 |
| Moon Phase: | 61% |
| Location: | Xanadu Observatory (backyard setup) |
| Software: | MaximDL, TheSky, CCDStack, Adobe Photoshop |
| Notes: | Adding color will make this region more dramatic. |