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: http://www.rochesterastronomy.org/SNIMAGES/1997dt.html
Дата изменения: Sun Apr 10 03:39:58 2016 Дата индексирования: Sun Apr 10 22:34:10 2016 Кодировка: Поисковые слова: polar ring |
On 12/1/97 I got the first clear night since 1997dt was reported. I just took the camera apart for cleaning, and I didn't get a chance to make twilight flat fields tonight. Thus the edge is darker than the center of the field. I'll correct this if it's clear tomorrow night.
The image was taken with C14 @f4 and CB245 CCD camera. Seven 60 sec exposures were stacked. North is at the top. The field of view is about 12 X 9 arcmin. The supernova is the star just west (right) of the nucleus.
Back to Supernovae in NGC and IC galaxies.
Phil Sullivan