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Pelican (or Pterodactyl) - narrowband


GazAstro
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Hi all, thanks for looking ! really nothing special but I'm getting my head around narrowband / SHO imaging. The Ha was good but the Oii and Sii were very weak (nearly a full moon)

1 hr Ha, 1 hr 25 mins Oii and 1 hr 10 mins Sii all in 300 sec subs

Pelican_SHO.thumb.jpg.5e0df0c56c33e192c1cf01cd0b31eec7.jpg
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Posted by: @GazAstro

To improve on the Oiii and Sii would I be better off just adding subs to increase total integration or try going for 600 second subs ?

Longer subs would help especially if you can get them without the moon around. If you get moonless ones then I would be tempted to just use those and not the ones with loads of moon glow.

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  • 2 weeks later...

Cheers John still very much a beginner on the processing ?

Stacked in DSS, all adjustments made in Photoshop ... Levels, curves, RGB/SHO Combined and selective colour. Had to massively reduce noise on the Oiii and Sii as very heavily streched.

Not sure what deconvolution is but sounds like a Pixinsight jobby.

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Posted by: @GazAstro

Not sure what deconvolution is but sounds like a Pixinsight jobby.

Yes it is Gary, it is used to reduce star size/shapes, but is often over done creating similar stars as yours.

As for noise reduction, I would rather leave some in than go overboard, with my polluted skies I know how far I can go without damaging the image.

HTH

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