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R Fisher

NGC 6888 with SW Quattro

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Taken last weekend with the SW Quattro Newt and QSI 690 CCD in the HST scheme.

Spent most of the previous week setting up the scope after a long period of not using it.

Aim of the image was to enhance the OIII emissions (blue) around the outer parts of the nebula. 

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Thanks Peter,

Left the background quite high because there was some detail there and didn't have any problems with stray light near the scope for a change.

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You have that nicely tickled up. Very clean and crisp. How long were your subs? There is a curious outer O111 shell beyond the upper right of the nebula which you might pick up more easily in longer subs.

Olly

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Subs were only 400S in OIII, I can see the bubble in the upper right of the image on the OIII integrated channel but it doesn't come through very well on the combined image without introducing too much noise,

Will try longer subs as you suggest, its in an ideal part of the sky for me at the moment so only need some more clear sky. 

Cheers

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For narrowband at F5 I never go below 15 minutes and prefer 30 when circulstances allow. I find it makes a huge difference.

Olly

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