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Hi Ray,
NGC1398 has an unusual structure.
At magnitude 9.7 you've done well to pull that one out of noise.
You've shown great detail.
I notice you use an RCC1 corrector on a 10" f/4 Newt with a small H694 sensor.
Do you know how a larger QHY9m with a KAF8300 would go on the same system?
I am thinking that there would be vignetting & not 100% illumination?
( I am just wondering if my similar optical train would work on such a Newt. )
cheers
Allan
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