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



    
        

            Mat
Little Dumbbell M76
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Little Dumbbell M76

Technical card

Imaging telescopes or lenses: Celestron C9.25 Starbright XLT

Imaging cameras: Canon EOS 6D

Mounts: Sky-Watcher EQ6-R Pro

Guiding telescopes or lenses: Lacerta MGEN2-Autoguider with 9x50 Finder Scope

Software: Astra Image PLUS 5.0  ·  Fitswork 4.4.7  ·  GIMP 2.10.4  ·  Luc Coiffier's DSS


Dates:Aug. 21, 2020

Frames: 28x120" (56')

Integration: 56'

Avg. Moon age: 2.70 days

Avg. Moon phase: 8.02%


Basic astrometry details

Astrometry.net job: 3865222

RA center: 01h42m19s.9

DEC center: +51°3437

Pixel scale: 0.642 arcsec/pixel

Orientation: 146.154 degrees

Field radius: 0.090 degrees


Resolution: 849x549

Locations: Planneralm, Planneralm, Styria, Austria

Data source: Traveller

Description

Second try at the Little Dumbbell Nebula -- unfortunately a windy night with big stars and some tech pbs. After I finally got it all running (my auto-guider did not start up on 12V for over an hour), dawn prevented longer integration time and the original stack (see 2nd pic) was not at all promising: This planetary nebula was _tiny_, even at f/10 (2350mm), not in center (due to my dual setup, I did not dare to reposition), stars were bloated and grain all over.

It took some tricky processing to come to a version that bears at least some resemblance to (my) expectation (first pic). I am aware this version has been excessively stretched, but I preferred to visualize at least a little of the faint "handles" ;-)

Comments

Revisions

  • Little Dumbbell M76, 



    
        

            Mat
    Original
  • Little Dumbbell M76, 



    
        

            Mat
    C
  • Final
    Little Dumbbell M76, 



    
        

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    J

C

Description: Original stack (only stretched)

Uploaded: ...

J

Description: Extreme crop - more deconvolution

Uploaded: ...

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Little Dumbbell M76, 



    
        

            Mat