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Messier 101 - My first OAG Field Test, 


            Nico Augustin
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Messier 101 - My first OAG Field Test

Imaging telescopes or lenses: Celestron EdgeHD 800

Imaging cameras: ZWO ASI294MC Pro

Mounts: iOptron CEM25P

Guiding telescopes or lenses: Celestron EdgeHD 800

Guiding cameras: ZWO ASI174MM Mini

Software: Adobe Photoshop 2020  ·  Astro Pixel Processor

Filters: Optolong IR/UV-Cut

Accessory: Celestron Off-Axis Guider  ·  Raspberry Pi 4

Dates:Sept. 17, 2020

Frames:Optolong IR/UV-Cut: 22x300" (gain: 120.00) -10C

Integration: 1.8 hours

Darks: ~30

Flats: ~30

Flat darks: ~30

Avg. Moon age: 0.05 days

Avg. Moon phase: 0.00%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 3861517

RA center: 14h 3' 12"

DEC center: +54° 21' 33"

Pixel scale: 0.453 arcsec/pixel

Orientation: 88.654 degrees

Field radius: 0.271 degrees

Resolution: 3445x2584

Locations: N von Selenter See bei Gut Salzow, Fargau-Pratjau, Schleswig-Holstein, Germany

Data source: Traveller


This is the result of my (too short) first "real world" field test of the Celestronn OAG with ASI174MM. It worked like a charm! Only the collimation it maybe a tiny bit off but I don´t dare to tinker on that yet. Sadly the dew kicked it and my 75cm USB dew-heater strip did not good enough - basically it was useless. However, this problem night be solved in the meantime and I´m looking forward to the next field mission to add more data :-)


Sky plot

Sky plot


Messier 101 - My first OAG Field Test, 


            Nico Augustin