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Rodney - as to the ngc253 image, I didn't even know that glob was there until I started the run..
I'm having a custom step down ring 3d printed as there are no commercially available 112-90mm step down rings produced.
Which one Glen? The m42 image I posted is the red channel only. The colour image was impossible to balance due to light pollution.
The balance in the images with the camera is decidedly red. I intend to get a clip in ha filter or a 36mm unmounted ha filter for the 300/2.8 drop in filter holder to combat the light pollution. It's funny with an 8" f/5 Newtonian the ight pollution seemed not all that bad but with a wide, fast aperture setup like the 300/2.8 the light and resulting gradients are painfully difficult to process out.
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