Michael Purcell's Astrophotography

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NGC4631

NGC4631

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

NGC4631 is one of the largest of the edge-on spiral galaxies. Its structural type is believed to be Sc. The small galaxy is NGC4627.

I took this picture from my driveway.

Constellation Canes Venatici
Right Asc (hh:mm:ss) 12:42:00
Declination(deg:sec) 32:32
Magnitude 9.3
Size (ArcMin) 15.1
Tirion SkyAtlas 2000 #7
Uranometria 2000 #108


CCD Camera Parameters

ST-7 Compressed Image
File_version = 3
Data_version = 1
Exposure = 10 minutes
Focal_length = 63.000
Aperture = 65.9000
Response_factor = 2000.000
Note = Image taken 04/25/97 at 22:15:21
Background = 404
Range = 123
Height = 510
Width = 765
Date = 04/25/97
Time = 22:15:21
Exposure_state = 100
Temperature = -19.98 C
Number_exposures = 1
Each_exposure = 10 minutes
History = dFEK
Observer = Michael Purcell
X_pixel_size = 0.0090
Y_pixel_size = 0.0090
Pedestal = 0
E_gain = 2.30
User_1 = CCDOPS for DOS Version 3.50B4
Filter = Clear
Readout_mode = 0
Track_time = 300
Sat_level = 16383

This page last updated on November 5, 1997 Contact Michael Purcell

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