Andromeda Galaxy, M31, Exmoor, 2020
M31
All Andromeda's distant 2,5 million years away photons were collected under the truly dark skies of Exmoor using a reduced fast astrograph FSQ-85ED and a Nikon D810A for 6 hours.
Tech Card
Date / Location
13th, 17th & 18th September 2020, Brayford, North Devon near Exmoor, GMT+0, United Kingdom, TEMP: 16C, Bortle Class 3 ~SGM: 21.73 mag./arc sec2
Equipment
Camera: Nikon D810A
Imaging Telescope: Takahashi FSQ-85ED
Correcting Lens: Takahashi Reducer-QE 0.73x (composite focal length at 328mm and focal ratio at f/3.8)
Mount: iOptron CEM25EC
Image Quality
14 bit RAW (NEF)
Exposure time per image / number of composites and sensitivity
ISO 3200, 96 x 120" subs
ISO 3200, 50 x 180" subs
Total Integration Time
5hrs 42mins
Calibration Frames
25 Darks, 50 Bias, 25 Flats
Software
PixInsight 1.8.5 Core
Lightroom
Photoshop
DEEP SKY
STARSCAPE
SOLAR SYSTEM
EVENTS
