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Contains:  Great Nebula in Andromeda, M 110, M 31, M 32, NGC 205, NGC 221, NGC 224
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M31, 2018 Aquisition

Technical card

Imaging telescopes or lenses:Takahashi FSQ85

Imaging cameras:1600

Mounts:Losmandy GM8

Guiding telescopes or lenses:Guider 50/200mm

Guiding cameras:ASI 120MM

Filters:Astronomik Type 2c LRGB 2"Baader 7nm H-alpha

Dates:Aug. 9, 2018Aug. 10, 2018Aug. 12, 2018Sept. 12, 2018

10x10" bin 1x1
10x5" (gain: 76.00) bin 1x1
Baader 7nm H-alpha: 19x300" (gain: 200.00) bin 1x1
Astronomik B 1.25" Type IIc: 10x300" bin 1x1
Astronomik G 1.25" Type IIc: 10x300" (gain: 76.00) bin 1x1
Astronomik L Type IIc: 10x15" bin 1x1
Astronomik L Type IIc: 10x180" bin 1x1
Astronomik L Type IIc: 10x30" bin 1x1
Astronomik L Type IIc: 38x300" bin 1x1
Astronomik L Type IIc: 10x120" (gain: 76.00) bin 1x1
Astronomik L Type IIc: 10x20" (gain: 76.00) bin 1x1
Astronomik L Type IIc: 10x60" (gain: 76.00)
Astronomik L Type IIc: 1x600" (gain: 76.00) -15C bin 1x1
Astronomik R 1.25" Type IIc: 10x300" (gain: 76.00) bin 1x1

Integration: 8.6 hours

Avg. Moon age: 15.01 days

Avg. Moon phase: 4.66%

Bortle Dark-Sky Scale: 1.00

Mean SQM: 21.82

Basic astrometry details job: 2274659

RA center: 0h 42' 35"

DEC center: +41° 16' 15"

Pixel scale: 1.740 arcsec/pixel

Orientation: 271.239 degrees

Field radius: 1.301 degrees

Resolution: 4305x3234

Data source: Traveller


I had a run on M31 a couple of years ago with my DSRL and my TSA102 and this year i finally got an ASI1600 CMOS camera. So, to keep the same field in my photo, i switched to the FSQ85 and ASI1600 combo. Everything on top of my Losmandy GM8.
I had three nights to gather all the required data. I shot L the first night, and had to shoot shorter frames the next day to keep the core from burning. I also shot H-alpha the second night. The third night was RGB night. In total, 8.6 hrs of integration time in 21.8-21.9 skies, shot in the romanian mountains



Vlad Dumitrescu
License: None (All rights reserved)

Sky plot

Sky plot


M31, 2018 Aquisition, 


            Vlad Dumitrescu