Super wide field Crescent Nebula, 2021
NGC 6888
A super wide field image of Crescent nebula in Cygnus constellation, 4,700 light years away. This is just 25 mins of data I took in a short and bright hot summer night (July 2021). I used a D810A on a FSQ-85ED and its flattener guided with a Lacerta MGEN-II Superguider.
Tech Card
Date / Location
18th July 2021, Warwickshire, GMT+0, United Kingdom, TEMP: 20C, Bortle Class 4 ~SGM: 21.20 mag./arc sec2
Equipment
Camera: Nikon D810A
Imaging Telescope: Takahashi FSQ-85ED
Correcting Lens: Takahashi Flattener 1.01x (composite focal length at 455mm and focal ratio at f/5.4)
Mount: iOptron CEM25EC guided with Lacerta MGEN-II Superguider
Image Quality
14 bit RAW (NEF)
Exposure time per image / number of composites and sensitivity
ISO 1250, 5 x 300" subs
Total Integration Time
25mins
Calibration Frames
16 Darks, 16 Bias, 24 Flats
Software
PixInsight 1.8.8-8
Lightroom
Photoshop
DEEP SKY
STARSCAPE
SOLAR SYSTEM
EVENTS
