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Contains:  The star 9Cas
Getting plate-solving status, please wait...
CTB1 (Abell 85) Ha in progress, 


            Wes Chilton
CTB1 (Abell 85) Ha in progress

CTB1 (Abell 85) Ha in progress

Technical card

Resolution: 3326x2504

Dates:Sept. 17, 2015

Astrodon Hydrogen Alpha 5nm 31mm: 22x1800" -20C bin 1x1
Astrodon Hydrogen Alpha 5nm 31mm: 6x3600" -20C bin 1x1

Integration: 17.0 hours

Darks: ~50

Flats: ~20

Bias: ~200

Avg. Moon age: 3.77 days

Avg. Moon phase: 15.27%

Bortle Dark-Sky Scale: 7.00

Mean SQM: 18.22

Temperature: 67.00 job: 1295430

RA center: 359.911 degrees

DEC center: 62.389 degrees

Pixel scale: 1.759 arcsec/pixel

Orientation: -0.909 degrees

Field radius: 1.017 degrees

Locations: Home Observatory, La Crescenta, California, United States

Data source: Backyard


September 17, 2015
This is just some Ha data that I've started to collect on this object... seeing has been awful and I'll need a lot more data to really bring this out, but its coming along!

September 29, 2015
I added another 12 Has 30-minute subs, trying to pull out more detail

Update October 2, 2015
I've switched to taking 1-hour Ha subs as an experiment and have combined those 6 subs with my 22 30-minute subs. A little star reduction and despeckle and this is where I am. I'm going to try to get another 6-8 hours of Ha and then start on OIII once the Moon is waning.

October 4, 2015
Tweaked the star reduction and contrast to bring out more details in the gases.



Wes Chilton
License: None (All rights reserved)


  • CTB1 (Abell 85) Ha in progress, 


            Wes Chilton
  • CTB1 (Abell 85) Ha in progress, 


            Wes Chilton
  • Final
    CTB1 (Abell 85) Ha in progress, 


            Wes Chilton

Sky plot

Sky plot


CTB1 (Abell 85) Ha in progress, 


            Wes Chilton

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