Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astro.louisville.edu/shared_skies/archive/select/messier/m110/20121121/notes.txt Дата изменения: Sat Nov 24 08:29:29 2012 Дата индексирования: Sun Feb 3 15:13:39 2013 Кодировка: Поисковые слова: вечный календарь

Target: M31 and M32

Date: 2012-11-22

Time: 00:22 to 00:52

Telescope: FSQ

Camera: Apogee 9000

Filters: UBVRI

Exposure time: sum of 4 frames at 100 seconds each

Observer: John Kielkopf

Processing: John Kielkopf

Gradient in sky background removed with imlevel after dark and flat correction

WCS headers added with astrometry.net.

Headers tweaked to force coincidence in ds9 for rgb processing.

Color image from ds9 with sqrt mapping of R, V, B to r, g, and b, 1 pixel
smooth. Colors balanced for white on type A stars.