Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
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M81 M82, 



    
        

            John Richards
M81 M82
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M81 M82

Getting plate-solving status, please wait...
M81 M82, 



    
        

            John Richards
M81 M82
Powered byPixInsight

M81 M82

Technical card

Imaging telescopes or lenses: Astro-Tech AT72EDII

Imaging cameras: Canon SL1  ·  ZWO 183mc Pro 183 PRO

Mounts: iOptron SmartEQ Pro+

Guiding telescopes or lenses: ZWO F/4 MINI GUIDE SCOPE

Guiding cameras: ASI224MC

Focal reducers: Orion Field Flattener for Short Refractors Field flattener  ·  Astro Tech 0.8x Reducer/Flattener

Software: Pixinsight

Filters: Optolong L-Pro 2"

Accessory: Zwo ASIAIR ASIAIR


Dates:May 13, 2019May 1, 2020

Frames:
64x30" (32') (gain: 111.00) -10C bin 1x1
Optolong L-Pro 2": 61x180" (3h 3') ISO1600 bin 1x1

Integration: 3h 35'

Darks: 15

Flats: 20

Bias: 20

Avg. Moon age: 8.52 days

Avg. Moon phase: 61.89%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 3487477

RA center: 09h56m19s.2

DEC center: +69°1445

Pixel scale: 1.423 arcsec/pixel

Orientation: 146.999 degrees

Field radius: 0.897 degrees


Resolution: 3876x2358

Locations: Home, Warner Robins, GA, United States

Data source: Backyard

Description

A combination of subs taken a year ago, May 19, 2019 with the ASI183MC Pro and AT72EDII and subs from May 1, 2020 with the Canon SL1 unmodified and the AT72EDII. I was not happy with the subs from the SL1 when they were processed, but when I added the subs I had taken last year, the result was much better.

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M81 M82, 



    
        

            John Richards