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


            Carl Weber
M81/M82  Galaxies
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M81/M82 Galaxies

Technical card

Imaging telescopes or lenses: William Optics GT71

Imaging cameras: ZWO Optical ASI 1600-MM PRO COOLED

Mounts: Software Bisque Paramount MX+

Focal reducers: William Optics Flat 6A

Software: Adobe Lightroom  ·  Adobe Photoshop CC 2019 Adobe Photoshop 2019  ·  PixInsight  ·  Software Bisque Sky X Pro Software Bisque SkyX

Filters: Astronomik LRGBHaOIIISII

Accessory: MoonLite Moonlight Focuser w/High Res Stepper Motor

Dates:April 10, 2019

Frames: 34x300"

Integration: 2.8 hours

Avg. Moon age: 5.00 days

Avg. Moon phase: 25.77%

Basic astrometry details

Astrometry.net job: 2869970

RA center: 9h 55' 56"

DEC center: +69° 21' 14"

Pixel scale: 2.296 arcsec/pixel

Orientation: 79.826 degrees

Field radius: 0.837 degrees

Resolution: 2012x1688

Locations: SkyStar Observatory, Ramona, CA, United States

Data source: Own remote observatory

Remote source: Non-commercial independent facility


During galaxy season there wasn't any large targets for me to image. I have only a 71mm telescope and am imaging at prime focus. I decided to try and capture some galaxies. This image has only 2.8 hours of LRGB data. I was pleasantly surprised to find I got anything at all.

8x300 sec Red
8x300 sec Green
9x300 sec Blue
9x300 sec Lum


Sky plot

Sky plot


M81/M82  Galaxies, 


            Carl Weber