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C/2017 O1 ASASSN

Object : Comet, C/2017 O1 ASASSN
Coordinates/Direction : -
Object size : -
Object magnitude : -
More to know : You can read more about the comet on Seiichi Yoshida's homepage: comet/ catalog/ 2017O1/ 2017O1.html

Comet C/2017 O1
Date : 2017-09-26
Time (UT) : 00:06 to 01:00
Mount : SkyWatcher Star Adventurer, light weight mount
Lens/telescope : Sigma APO 150 mm f/2.8 (set to f/4)
Corrector/Barlow : -
Field (FOV) : 13.6x9.1o (full frame) before crop
camera : Canon 6D, QE=0.5, full frame, 20 Mpixel, 14 bit
camera temperature: About 6o C above surrounding temperature
Film/CCD : Raw, Cr2
Filter : none
Control system : Camera focus by Canon Remote APP, camera exposure by intervallometer
Exp. time : 45x60 seconds at ISO800
Image process tool : AstroImageJ with my own macros, Fitswork, IrfanView.
Processing : demosaic, align rgb, no dark or bias, use dithering instead, median stack.
Site : Sweden, Stockholm, Ingarö. Bortle 4
Comment : This object was very weak and hard to align in the stacking process. But still something in the end.
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