Date: 12/18, 12/20/2018
Description: NGC 2841 is an inclined unbarred spiral galaxy exhibiting a prominent inner ring structure in the constellation Ursa Major, it was discovered on 9 March 1788 by William Herschel. Initially thought to be about 30 million light years distant. [Ref: WikiPedia]
Sky Conditions: Hazy skies gibeous moon, FWHM: 2.5 arc sec/pixel
Imaging: Exposure: 120min Luminous (12x600sec) at 2x2bin and 120 min RGB each (12 x 600sec/ea.) at 2x2 bin using RGB filters
Guiding: ProTrac assisted guiding of 10 sec guide rate at 2x2 bin using NOAG
Equipment:
FLI 8300 CCD (LRGB filters), cooled to -30deg C
AT12RC at F8
Starlight Focuser NOAG with StarlightXpress Lodestar II guide camera Paramount ME Mount
SW: FocusMax,, SkyX, PixIsight - calibration with darks, flats, bias and color correction
Observatory site : Northern VA