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(Click on the picture above to go to the main image.)
I found this object somewhat by accident. I was reviewing the Uranometria charts of the area I expected to be working in that evening's imaging (looking for groupings/clusters of galaxies that might be worthwhile targets), and noticed a galaxy that was larger than 5 arcminutes. This told me that it might be a good object, and I simply added it to my list for the upcoming evening. When I took the picture, the galaxy initially showed up as a reasonably large elliptical blob. I then saved it for later processing.
"Later" turned out to be four months. I am still working through all the pictures I took on my trip to New Mexico, and finally got to this one. It is defintely one of my better pictures. Unlike many of my images, this one had almost no focusing, tracking, or vibration problems. As a result, post-processing was very successful. The image has striking three-dimensional textures. The only thing missing from the picture is the large extended halo around the galaxy. This is mostly invisible due to my having chosen a palette that brought out the details in the spiral arms.
I took this picture in New Mexico.
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| Constellation | Leo |
|---|---|
| Right Asc (hh:mm:ss) | 11:05:48 |
| Declination(deg:sec) | 00:02 |
| Magnitude | 8.9 |
| Size (ArcMin) | 9.5 |
| Tirion SkyAtlas 2000 | #13 |
| Uranometria 2000 | #236 |
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 04/18/96 at 00:12:34
Background = 157
Range = 193
Height = 510
Width = 765
Date = 04/18/96
Time = 00:12:34
Exposure_state = 100
Temperature = -14.81 C
Number_exposures = 1
Each_exposure = 5 minutes
History = dEKF
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 = 500
Sat_level = 16383
This page last updated on Aug 17, 1996 Contact Michael Purcell