Michael Purcell's Astrophotography

[ Previous | Top | Thumbnails | MasterList | Next ]

M22

M22 is the third brightest Globular Cluster, and the nearest.

I took this picture in New Mexico.

The IRAS orbital telescope detected a very faint planetary nebula within the cluster. Check out the images at http://seds.lpl.arizona.edu/messier/more/m022_pn.html

Constellation	Sagittarius
Right Asc (hh:mm:ss)	18:36:24
Declination(deg:sec)	-23:54
Magnitude	5.1
Size (ArcMin)	24
Tirion SkyAtlas 2000	#22
Uranometria 2000	#340

CCD Camera Parameters

ST-7 Compressed Image
File_version = 3
Data_version = 1
Exposure = 5 minutes
Focal_length = 63.000
Aperture = 65.9000
Response_factor = 2000.000
Note = Image taken 04/15/96 at 04:49:39
Background = 140
Range = 2288
Height = 507
Width = 758
Date = 04/15/96
Time = 04:49:39
Exposure_state = 100
Temperature = -19.98 C
Number_exposures = 15
Each_exposure = 20 seconds
History = R
Observer = Michael Purcell
X_pixel_size = 0.0090
Y_pixel_size = 0.0090
Pedestal = -153
E_gain = 2.30
User_1 = CCDOPS for DOS Version 3.50B4
Filter = Clear
Readout_mode = 0
Track_time = 0
Sat_level = 65535

This page last updated on June 14, 1998 Contact Michael Purcell