| Designation |
Messier 22
(NGC6656)
|
| Type | Globular Cluster (Class VII) |
| Constellation | Sagittarius |
| Coordinates | Telescope centered at RA '18 36 06' - Dec '- 23 54 03' |
| Magnitude | 5.1 |
| Size | 70 Light Years |
| Distance | 10,000 light years |
| Dimensions | 24 arcminutes |
| Image Field | 18.7 x 29 arcminutes |
|
Notes:
|
M22 has an absolute magnitude of -8.5, which equates to a luminosity of some 210,000 suns. It is relatively average in size and brightness for a globular cluster. |
|
|
| Telescopes | Intes Micro Alter M 806 203mm f/6 Mak Cass on Losmandy G-11 with Gemini L4 |
| Focal Length | 1218 mm |
| Guiding | SXV guidehead through Takahashi FS60C @ f/5.9 |
| Telescope Control | Maxim DL (V4.5) |
| CCD Camera |
Starlight Xpress SXV-H9 - USB 2 ExView progressive
scan
1392 x 1040 (6.45 uM) pixel array (8.98 x 6.71 active area)
|
| Image Scale | 1.18 arcsec/pixel |
| Filters |
1.25" Astronomik Type II Dichroic
IR blocking filters in True Tech filter wheel- Red, Green, Blue
|
| Exposures |
30 minutes
total: RGB - 10 minutes each (10 x 1) unbinned
Sigma
combined in Maxim DL
|
| Calibration | None |
| Processing Software | Maxim DL, Photoshop CS (8.0) |
| Location | Chiefland Astronomy Village, FL - 29.393 N , - 82.863 W |
| Date Imaged | 06/03/06 |
