Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 108  ·  M 97  ·  NGC 3556  ·  NGC 3587  ·  Owl Nebula
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M97 & M108 Owl Nebula & Surfboard Galaxy HOO, 


            Gebhard Maurer
M97 & M108 Owl Nebula & Surfboard Galaxy HOO
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M97 & M108 Owl Nebula & Surfboard Galaxy HOO

Technical card

Imaging telescopes or lenses: Skywatcher Newton 200/1000 PDS

Imaging cameras: ZWO ASI ASI1600MM Pro

Mounts: Skywatcher AZ-EQ6 Pro

Guiding telescopes or lenses: Artesky 60mm Ultraguide

Guiding cameras: ZWO ASI 120mm Mini Mono

Software: Open PHD Guiding Project PHD2 2.6.5  ·  Nighttime Imaging 'N' Astronomy  ·  PixInsight PixInsinght 1.8

Filters: ZWO 36mm 7nm OIII  ·  ZWO 36mm 7nm Ha

Dates:May 18, 2020

ZWO 36mm 7nm Ha: 10x420" (gain: 139.00) -20C bin 1x1
ZWO 36mm 7nm OIII: 14x420" (gain: 139.00) -20C bin 1x1

Integration: 2.8 hours

Darks: ~50

Flats: ~50

Bias: ~50

Avg. Moon age: 25.66 days

Avg. Moon phase: 15.98%

Bortle Dark-Sky Scale: 4.00

Mean FWHM: 4.50

Temperature: 15.00

Basic astrometry details

Astrometry.net job: 4001994

RA center: 11h 12' 51"

DEC center: +55° 21' 43"

Pixel scale: 0.782 arcsec/pixel

Orientation: 336.030 degrees

Field radius: 0.601 degrees

Resolution: 4503x3216

Locations: Backyard, Raglitz, Niederösterreich, Austria

Data source: Backyard


I have tried to capture M97 Owl Nebula & M108 Surfboard Galaxy and startet with Ha and OIII using my Skywatcher Newton 200/1000 PDS and ASI1600. During the capturing a sold my Newton and bought a Esprit 120ED, so I could not finish this object with LRGB. I have tried my best with the existing HOO data.


Sky plot

Sky plot


M97 & M108 Owl Nebula & Surfboard Galaxy HOO, 


            Gebhard Maurer

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