Michael Purcell's Astrophotography

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M42
The Great Nebula in Orion

(Click on the picture above to go to the main image.)

This is a mosaic of five images using GCO's ST-6B. Unfortunately, I misaligned one of the images and cut off M43 in the top left. This is a grayscale image with an artificial pallette.

Image registration, merge, and palette assignment done with Mira A/P.

I took this picture at Grove Creek Observatory.

Constellation	Orion
Right Asc (hh:mm:ss)	5:35:24
Declination(deg:sec)	-5:27
Magnitude	4
Size (ArcMin)	66x60
Tirion SkyAtlas 2000	#11
Uranometria 2000	#225

CCD Camera Parameters

ST-6 Compressed Image
File_version = 3
Data_version = 1
Exposure = 15 seconds
Focal_length = 97.959
Aperture = 141.3700
Response_factor = 2000.000
Note = Image taken 04/29/98 at 18:37:28
Background = 0
Range = 3379
Height = 241
Width = 375
Date = 04/29/98
Time = 18:37:28
Exposure_state = 164
Temperature = -20.00 C
Number_exposures = 1
Each_exposure = 15 seconds
History = R
Observer = Michael Purcell; C-14@f/7
X_pixel_size = 0.0230
Y_pixel_size = 0.0270
Pedestal = 0
E_gain = 6.70
User_1 = CCDOPS for DOS Version 3.76
Filter = CLEAR
Readout_mode = 1
Track_time = 0
Sat_level = 65535

This page last updated on May 10, 1998 Contact Michael Purcell