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Contains:  M 76, Little Dumbbell, NGC 650
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M76: Little Dumbbell Nebula, 





    
        

            Chris Sullivan
M76: Little Dumbbell Nebula

M76: Little Dumbbell Nebula

Technical card

Imaging telescope or lens:TPO/GSO RC8

Imaging camera:ZWO ASI 1600MM Cool

Mount:SkyWatcher AZ-EQ5

Guiding telescope or lens:ZWO Off Axis Guider

Guiding camera:Starlight Xpress Lodestar Autoguider X2

Filters:RedOIIIBlueGreenZWO H-alpha 7nm

Resolution: 3382x2448

Dates:June 30, 2018July 1, 2018July 2, 2018July 3, 2018July 9, 2018July 10, 2018July 14, 2018July 16, 2018July 18, 2018July 19, 2018July 20, 2018July 27, 2018July 30, 2018Aug. 5, 2018

Frames:
Blue: 80x120" ISO139
Green: 79x120" (gain: 139.00)
ZWO H-alpha 7nm: 99x300" (gain: 139.00)
OIII: 129x300" (gain: 139.00)
Red: 97x120" (gain: 139.00)

Integration: 27.5 hours

Avg. Moon age: 14.69 days

Avg. Moon phase: 54.95%

Bortle Dark-Sky Scale: 8.00

Astrometry.net job: 2670315

RA center: 25.582 degrees

DEC center: 51.566 degrees

Pixel scale: 0.488 arcsec/pixel

Orientation: 359.163 degrees

Field radius: 0.283 degrees

Locations: Home Roof (Bortle 7-8 / Est. Sky Quality: 18.53), Springfield, PA, United States

Data source: Backyard

Description

This will be my last image with the RC in a while. My data really didn't come out great, so this was a challenge to process. I think I included too many subs taken as the sun was coming up and the quality of my hydrogen alpha data, in particular, was just weak. I definitely should have done one more session, but I've been ready to move on for a long time.

Comments

Author

Chris-PA
Chris Sullivan
License: None (All rights reserved)
4054
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Revisions

  • M76: Little Dumbbell Nebula, 





    
        

            Chris Sullivan
    Original
  • M76: Little Dumbbell Nebula, 





    
        

            Chris Sullivan
    N
  • M76: Little Dumbbell Nebula, 





    
        

            Chris Sullivan
    P
  • Final
    M76: Little Dumbbell Nebula, 





    
        

            Chris Sullivan
    Q
  • M76: Little Dumbbell Nebula, 





    
        

            Chris Sullivan
    R

Q

Reprocessed from scratch on May 1, 2019.

R

Crop of revision Q.

Sky plot

Sky plot

Histogram

M76: Little Dumbbell Nebula, 





    
        

            Chris Sullivan