Michael Purcell's Astrophotography

[ Previous | Top | Thumbnails | MasterList | Next ]

M91

M91

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

I took this picture during my second trip to Grove Creek Observatory. It is a replacement for my first attempt from the first trip.

Constellation Coma Berenices
Right Asc (hh:mm:ss) 12:35:24
Declination(deg:sec) 14:30
Magnitude 10.2
Size (ArcMin) 5x4

CCD Camera Parameters

ST-7E Compressed Image
File_version = 3
Data_version = 1
Exposure = 20 minutes
Focal_length = 98.000
Aperture = 141.3700
Response_factor = 2000.000
Note = Image taken 03/31/00 at 22:27:33
Background = 1125
Range = 915
Height = 510
Width = 765
Date = 03/31/00
Time = 22:27:33
Exposure_state = 356
Temperature = -14.81
Number_exposures = 1
Each_exposure = 20 minutes
History = dFEK
Observer = Michael Purcell at Grove Creek Observatory
X_pixel_size = 0.0090
Y_pixel_size = 0.0090
Pedestal = 0
E_gain = 2.30
User_1 = CCDOPS for DOS Version 3.84
User_4 = Y2KYear = 2000
Filter = None
Readout_mode = 0
Track_time = 200
Sat_level = 65535

This page last updated on July 6, 1999 Contact Michael Purcell

[ Previous | Top | Thumbnails | MasterList | Next ]