Hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  Barbell Nebula  ·  Cork Nebula  ·  Little Dumbbell Nebula  ·  M 76  ·  NGC 650
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M76, The Little Dumbbell Planetary Nebula in Perseus, 



    
        

            Mark Wetzel
M76, The Little Dumbbell Planetary Nebula in Perseus
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M76, The Little Dumbbell Planetary Nebula in Perseus

Getting plate-solving status, please wait...
M76, The Little Dumbbell Planetary Nebula in Perseus, 



    
        

            Mark Wetzel
M76, The Little Dumbbell Planetary Nebula in Perseus
Powered byPixInsight

M76, The Little Dumbbell Planetary Nebula in Perseus

Technical card

Imaging telescopes or lenses: Celestron C9.25 Edge HD

Imaging cameras: ZWO ASI 1600MM-Pro Cool

Mounts: Celestron CGEMⅡ

Guiding telescopes or lenses: Celestron C9.25 Edge HD

Guiding cameras: ZWO 174MM Mini

Software: Celestron CPWI  ·  Main Sequence Software Seqence Generator Pro 3  ·  Pleiades Astrophoto PinInsight  ·  Adobe Photoshop CC 2021 Photoshop 2021  ·  PHD 2

Filters: ZWO 36mm 7nm Ha  ·  ZWO 36mm Red  ·  ZWO 36mm Green Filter  ·  ZWO 36mm Blue Filter

Accessory: Celestron OAG


Dates:Nov. 15, 2020Nov. 17, 2020Nov. 19, 2020Nov. 20, 2020

Frames:
ZWO 36mm 7nm Ha: 87x300" (7h 15') (gain: 139.00) -10C bin 1x1
ZWO 36mm 7nm OIII: 118x300" (9h 50') (gain: 139.00) -10C bin 1x1
ZWO 36mm Blue Filter: 118x60" (1h 58') (gain: 139.00) -10C bin 1x1
ZWO 36mm Green Filter: 123x60" (2h 3') (gain: 139.00) -10C bin 1x1
ZWO 36mm Red: 133x60" (2h 13') (gain: 139.00) -10C bin 1x1

Integration: 23h 19'

Darks: ~50

Flats: ~50

Flat darks: ~50

Avg. Moon age: 3.35 days

Avg. Moon phase: 15.94%

Bortle Dark-Sky Scale: 6.00


Basic astrometry details

Astrometry.net job: 4136940

RA center: 1h 42' 20"

DEC center: +51° 34' 19"

Pixel scale: 0.775 arcsec/pixel

Orientation: 161.418 degrees

Field radius: 0.207 degrees


Resolution: 1500x1200

Data source: Traveller

Description

Mesa, Arizona
November 15 – 20, 2020

I imaged Messier 76, the Little Dumbbell Nebula, in the constellation Perseus from light polluted skies in Mesa Arizona. This planetary nebula was captured with two narrowband filters, Hydrogen-alpha (Ha) and Oxygen-III (OIII). I also took a series of exposures with Red, Green and Blue filters to capture the natural color of the stars. This is a false color image that combines Ha in the red channel, and O-III in the green and blue channels (HOO). The star color image was then blended with the HOO false color image to produce the final result. This image presented challenges in bringing out sufficient details in the core while not creating a result that had too much contrast. I experimented with masking techniques in PixInsight to protect the stars and the background while sharpening the nebula with combinations of the Histogram Equalization and HDRMultiscaleTransform tools.

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