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Caldwell 9, the Cave Nebula, HOO, 





    
        

            Stephen Garretson

Caldwell 9, the Cave Nebula, HOO

Technical card

Resolution: 4656x3520

Dates:Sept. 11, 2018Sept. 12, 2018

Frames:
Baader 3.5nm Ha filter, 2": 80x180" (gain: 139.00) -20C bin 1x1
Baader 8.5nm OIII filter, 2": 48x120" (gain: 139.00) -20C bin 1x1
Baader 8.5nm OIII filter, 2": 64x180" (gain: 139.00) -20C bin 1x1

Integration: 8.8 hours

Darks: ~15

Flats: ~30

Flat darks: ~15

Bias: ~40

Avg. Moon age: 2.49 days

Avg. Moon phase: 7.15%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 2250674

Data source: Backyard

Description

Cave Nebula captured over a couple relatively clear night in September. Data evenly split between Ha and OIII. Planning on adding SII and maybe try with a blue filter to see how that balances out color. The latter is iffy from my LP location...I live in narrowband land.

Comments

Author

StephenGarretson
Stephen Garretson
License: None (All rights reserved)
220
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Histogram

Caldwell 9, the Cave Nebula, HOO, 





    
        

            Stephen Garretson