Celestial hemisphere:  Southern  ·  Constellation: Sculptor (Scl)  ·  Contains:  NGC 300
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Caldwell 70 face on spiral galaxy in the sculptor group Ha LRGB, 



    
        

            robonrome
Caldwell 70 face on spiral galaxy in the sculptor group Ha LRGB
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Caldwell 70 face on spiral galaxy in the sculptor group Ha LRGB

Getting plate-solving status, please wait...
Caldwell 70 face on spiral galaxy in the sculptor group Ha LRGB, 



    
        

            robonrome
Caldwell 70 face on spiral galaxy in the sculptor group Ha LRGB
Powered byPixInsight

Caldwell 70 face on spiral galaxy in the sculptor group Ha LRGB

Acquisition details

Dates:
Sept. 15, 2022
Frames:
280×120(9h 20′)
Integration:
9h 20′
Avg. Moon age:
19.94 days
Avg. Moon phase:
72.59%

Basic astrometry details

Astrometry.net job: 6308109

RA center: 00h54m58s.1

DEC center: -37°3918

Pixel scale: 0.770 arcsec/pixel

Orientation: 276.253 degrees

Field radius: 0.285 degrees

Resolution: 2145x1583

File size: 1.3 MB

Locations: Backyard, Brisbane, Queensland, Australia

Data source: Backyard

Description

This galaxy is a new one for me, lies a fair bit south of the main sculptor galaxy (NGC253). It's quite large in field of view but surface brightness not as great. Lots of Ha star forming regions in the arms. 

This is my first image with the Meade 12in ACF F8 using the 0.67x reducer so a focal length more like 1700mm.  Still getting up to speed on long FL imaging with an SCT and the reducer adds some further fuss... seems to retain a failry flat field for my ASI294mm sensor but at current spacing seems to create slight "+" shape to stars esp toward edges... tends to even out after a full night is stacked. 

Here I've run 120s expsoures for RGB, 45s for LUM and 300s for the Ha.

Stacked and processed in APP and then recombined in Startools with results blended to taste in PS.

Comments

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Histogram

Caldwell 70 face on spiral galaxy in the sculptor group Ha LRGB, 



    
        

            robonrome

In these public groups

Southern Hemisphere Astro