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Caldwell 9 (Cave nebula), 





    
        

            neptun
Caldwell 9 (Cave nebula)

Caldwell 9 (Cave nebula)

Technical card

Resolution: 3348x2496

Dates:Nov. 2, 2013

Frames: 31x420"

Integration: 3.6 hours

Avg. Moon age: 28.41 days

Avg. Moon phase: 1.40%

Astrometry.net job: 868182

RA center: 344.264 degrees

DEC center: 62.591 degrees

Pixel scale: 1.220 arcsec/pixel

Orientation: -91.948 degrees

Field radius: 0.708 degrees

Locations: Rozhen National Observatory, Smolyan, Bulgaria

Description

This is stack of 31x7 min L. Some old material from 2013. I could not get color channels at that time due to problems with filter wheel and later completely forgot that these frames exist. Now here is the result. :)

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Author

neptun
neptun
License: Attribution-NonCommercial Creative Commons
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Caldwell 9 (Cave nebula), 





    
        

            neptun