Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astro.louisville.edu/shared_skies/archive/select/barnard/barnard33_horsehead/20121009/notes.txt Дата изменения: Fri Dec 7 14:18:59 2012 Дата индексирования: Sun Feb 3 16:47:30 2013 Кодировка: Поисковые слова: annular solar eclipse

Target: Horsehead Nebula or Barnard 33

Date: 2012-10-09

Time: 16:53

Telescope: CDK20S

Camera: Apogee U16

Filters: UBVRI

Exposure time: 100 seconds each filter

Observer: Rhodes Hart

Processing: John Kielkopf

Colors at the center of the field are approximately correct for visual response.
The images are not flat fielded, and the vignetting changes the color balance
progressively away from the center.