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Pacman Nebula Sh2-184 (SHO + RGB stars). inc. flexure correction testing, Pam Whitfield
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Pacman Nebula Sh2-184 (SHO + RGB stars). inc. flexure correction testing

Pacman Nebula Sh2-184 (SHO + RGB stars). inc. flexure correction testing, Pam Whitfield
Powered byPixInsight

Pacman Nebula Sh2-184 (SHO + RGB stars). inc. flexure correction testing

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Description

Data were collected in bits and pieces over 7 nights, although 2hrs of data from a full session was thrown out via NSG due to high cloud. I could have done with the extra Sii data in particular but hey-ho. There was still enough data to drizzle though.

The majority of the narrowband data were taken while testing development builts of the NINA flexure correction plugin by @Francesco Meschia. The flexure in my setup doesn't seem too bad but the plugin seemed to have a positive impact on the eccentricity of the stars. In any case I'm going to keep using it for my long CCD subs. BlurXTerminator might do a decent job of fixing eggy stars but better to minimize them in the first place.

All-in-all a better result after processing than I got 5 years ago..... better data + better processing with better tools. I'm enjoying the lack of halos from the 3nm Oiii filter but 900s subs makes getting decent dithering statistics quite time consuming!

I tried not to 'overcook' the colour of the Oiii and avoided the temptation to make it very blue and oversaturated. Narrowband is false colour by definition but making it look too false would rather defeat the point of using SPCC calibrated RGB star colours.

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Pacman Nebula Sh2-184 (SHO + RGB stars). inc. flexure correction testing, Pam Whitfield

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Yorkshire Astro Imaging