Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 108  ·  M 97  ·  NGC 3556  ·  NGC 3587  ·  Owl Nebula
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The Surfboard Galaxy and Owl Nebula, 



    
        

            axlecrusher
The Surfboard Galaxy and Owl Nebula
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The Surfboard Galaxy and Owl Nebula

Getting plate-solving status, please wait...
The Surfboard Galaxy and Owl Nebula, 



    
        

            axlecrusher
The Surfboard Galaxy and Owl Nebula
Powered byPixInsight

The Surfboard Galaxy and Owl Nebula

Technical card

Imaging telescopes or lenses: William Optics Zenithstar 61 II

Imaging cameras: ZWO ASI2600MC Pro

Mounts: SkyWatcher EQ6R Pro

Guiding telescopes or lenses: ZWO 30 mm f/4 Mini Guide Scope

Guiding cameras: ZWO ASI120MM

Focal reducers: Flat61A

Software: Star Tools  ·  EQMOD  ·  NINA  ·  Affinity Photo  ·  PHD2  ·  DeepSky Stacker

Filters: Optolong L-eNhance 2" Optolong L-eNhance


Dates:April 5, 2021April 16, 2021April 20, 2021

Frames:
112x120" (3h 44') (gain: 100.00) -10C
37x180" (1h 51') (gain: 100.00) -10C
Optolong L-eNhance 2" Optolong L-eNhance: 49x300" (4h 5') (gain: 100.00) -10C

Integration: 9h 40'

Darks: 30

Flats: 32

Flat darks: 32

Avg. Moon age: 11.59 days

Avg. Moon phase: 35.70%

Bortle Dark-Sky Scale: 5.00


Basic astrometry details

Astrometry.net job: 4498409

RA center: 11h13m04s.8

DEC center: +55°2204

Pixel scale: 1.050 arcsec/pixel

Orientation: 94.460 degrees

Field radius: 1.094 degrees


Resolution: 6238x4166

Data source: Backyard

Description

The Surfboard Galaxy (M10 and Owl Nebula (M97).

The galaxy is 45.98 million light years away and the Owl Nebula is planetary nebula 2600 light years away. The Owl Nebula is 0.91 light years (5349549242536 miles) across. The star in the center of the Owl Nebula is condensing into a white dwarf, it is 55 - 60% the mass of the sun, and is 14 to 148 times more luminous.

I was inspired by Chuck's Astrophotography to capture this. I captured this over 3 nights, using a OSC camera to capture RGB and hydrogen alpha. For the H-alpha I used the red channel of the Optolong L-eNhance filter and overlaid it on the RGB image.

I stacked the subs in DSS, a unique group for each imaging session, producing a unique image for each session. I processed the images in using Star Tools. I combined the processed images in Affinity Photo using average mixing mode. The grayscale H-alpha image was pasted into the red component of a layer which was mixed using the add, to the RGB layer.

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The Surfboard Galaxy and Owl Nebula, 



    
        

            axlecrusher