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Contains:  California nebula, NGC 1499, The star ξPer
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NGC 1499 - Ha-OIII [bi-colour] - 2 pane mosaic, 





    
        

            Simon
NGC 1499 - Ha-OIII [bi-colour] - 2 pane mosaic

NGC 1499 - Ha-OIII [bi-colour] - 2 pane mosaic

Technical card

Resolution: 4167x3106

Astrometry.net job: 2676891

RA center: 60.270 degrees

DEC center: 36.409 degrees

Pixel scale: 2.312 arcsec/pixel

Orientation: 1.389 degrees

Field radius: 1.669 degrees

Data source: Amateur hosting facility

Remote source: e-EyE Extremadura

Description

I have had this data for a long time, but only bothered to process the Ha side of the mosaic, because there was so little OIII in the final stack - it was barely visible. I think that maybe due to the fact that this nebula has not got a lot of OIII in it anyway.

So, I decided to create a blended green version of the data through Pixelmaths, giving rise to this slightly unusual tone. On pane 1 there 8 subs at 20 minutes long each in Ha, and 10 subs in OIII at 20 minutes long also. In pane 2 there was 12 subs at 20 minutes long each in Ha and only 8 subs in OIII at 20 minutes long each. Total integration time was: 7 hours 40 minutes.

I did try a HOO version, which turned out OK... but I am not sure whether to post it. Thanks...

Comments

Author

downingsimon
Simon
License: None (All rights reserved)
352
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NGC 1499 - Ha-OIII [bi-colour] - 2 pane mosaic, 





    
        

            Simon