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Contains:  M 97, M97, NGC 3587, Owl nebula, PK148+57.1
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M97 HOO, 



    
        

            mikefulb
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M97 HOO

Technical card


Dates:March 17, 2019March 19, 2019March 22, 2019March 23, 2019March 26, 2019March 27, 2019

Frames:
Astrodon Ha 1.25" 5nm: 145x300" (gain: 200.00) -20C bin 1x1
Astrodon OIII 1.25 3nm: 115x600" (gain: 200.00) -20C bin 1x1

Integration: 31.3 hours

Avg. Moon age: 16.60 days

Avg. Moon phase: 81.83%


Astrometry.net job: 2653387

RA center: 11h 14' 48"

DEC center: +55° 1' 18"

Pixel scale: 1.120 arcsec/pixel

Orientation: 179.966 degrees

Field radius: 0.227 degrees


Resolution: 1143x905

Data source: Backyard

Description

I pushed this more than normal to see the OIII shell better. I also used some 600s exposures with my ASI1600MM at gain 200 which was the longest I had ever tried. I tried blending in RGB stars which is not something I normally do. I used some high pass filtering to bring out contrast inside the 'Owl' area. The background was difficult to control so it ended up darker than I normally like. Overall an image with compromises but a real learning experience for me.

Comments

Author

mikefulb
mikefulb
License: None (All rights reserved)
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M97 HOO, 



    
        

            mikefulb