Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  The star 9Cas
CTB1 in HOO+RGB, 



    
        

            Erik Pirtala
CTB1 in HOO+RGB
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CTB1 in HOO+RGB

CTB1 in HOO+RGB, 



    
        

            Erik Pirtala
CTB1 in HOO+RGB
Powered byPixInsight

CTB1 in HOO+RGB

Acquisition details

Dates:
Oct. 2, 2021 ·  Oct. 3, 2021 ·  Oct. 12, 2021 ·  Oct. 19, 2021
Frames:
Astrodon E-Series Luminance Red, Green, Blue: 30×120(1h) (gain: 0.00) bin 1×1
Astrodon Ha 5nm: 90×360(9h) (gain: 200.00) bin 1×1
Astrodon OIII 3nm: 50×360(5h) (gain: 200.00) bin 1×1
Astrodon OIII 3nm: 14×600(2h 20′) (gain: 200.00) bin 1×1
Integration:
17h 20′
Avg. Moon age:
18.03 days
Avg. Moon phase:
42.76%
Bortle Dark-Sky Scale:
3.00

Basic astrometry details

Astrometry.net job: 5122241

RA center: 00h00m03s.6

DEC center: +62°2526

Pixel scale: 1.906 arcsec/pixel

Orientation: 183.823 degrees

Field radius: 0.777 degrees

Resolution: 2378x1720

File size: 8.3 MB

Data source: Own remote observatory

Remote source: Non-commercial independent facility

Description

This extraordinary supernova remnant is located about 9700 light-years away. It is very uniquely formed, as an almost perfect sphere. What a dim target it is too! Very challenging to process. It took me a month to capture a total of 17,2 hours of exposure to it.

Comments

Sky plot

Sky plot

Histogram

CTB1 in HOO+RGB, 



    
        

            Erik Pirtala