Michael Purcell's Astrophotography

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NGC4656

NGC4656

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

Burnham's Celestial Handbook discribes this as an irregular barred spiral. NGC4657 is the very small galaxy at the bottom right of the image.

I took this picture in New Mexico.

Constellation Canes Venatici
Right Asc (hh:mm:ss) 12:44:00
Declination(deg:sec) 32:10
Magnitude 10.4
Size (ArcMin) 13.8
Tirion SkyAtlas 2000 #7
Uranometria 2000 #108


CCD Camera Parameters

ST-7 Compressed Image
File_version = 3
Data_version = 1
Exposure = 15 minutes
Focal_length = 63.000
Aperture = 65.9000
Response_factor = 2000.000
Note = Image taken 04/25/97 at 22:37:41
Background = 440
Range = 64
Height = 510
Width = 765
Date = 04/25/97
Time = 22:37:41
Exposure_state = 100
Temperature = -19.98
Number_exposures = 1
Each_exposure = 15 minutes
History = DFEKK
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 June 1, 1997 Contact Michael Purcell

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