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Melotte 15 H Only


DaveS

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This was meant to be a Hubble Palette image, but the [SII] and [OIII] were so weak as to be unusable, will have to wait until I get a *lot* more data. In the meantime, here's 80 mins of HII in 10 min subs.

TS Photoline 130 f/7, Astrodon 3nm filter, Trius 694 encoder guided on ASA DDM60.

Sigma Add stacking in AstroArt 5, cropping to remove alignment edges (Argh, why? I've not changed anything) then DDP, Low Pass Filter and Histogram Stretch.

 

1392527419_HydrogenonlyDDP.thumb.png.1d2f0a281c23e00c44831ddad60c848b.png

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I am surprised to hear you say that Oiii and Sii were very weak, especially from your nice dark location.  I have managed to get signal at least in one of those channels even from my Bortle 8 location where the attached image was taken.  

https://www.astrobin.com/407815/?nc=user

What nm are your Oiii and Sii filters.  Maybe you have the really narrow ones, mine are 8nm.

Carole 

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