Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.astro.louisville.edu/shared_skies/archive/select/stars/ursa_minor/polaris/20141120/notes.txt Дата изменения: Mon Dec 1 11:11:55 2014 Дата индексирования: Sun Apr 10 06:08:48 2016 Кодировка: Поисковые слова: aircraft

Night of 2014-11-20
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Testing new 12-bit code for AVT cameras using an AVT GX-1050 camera.

Camera on a tripod outside the building looking at the northern sky.
Clear conditions, temperature ~16F, network to sundog.

16 mm f/1.4 lens

1 second exposure times

32 16-bit frames captured with frames buffered on the camera

coadded dark frames in AIJ, divided by 12, subtracted from data stack
aligned data stack using apertures
coadded data stack of 12 dark-subtracted frames

Stars visible to <8 mag

The "NSEW" image


polaris_sky5_1s_16mm_f1p4_darksub_nsew.png


shows the sky as it would appear facing north in the northern hemisphere. The
field of view is about 25 degrees.

The fits files are images from which this "png" image was derived.