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Old 01-11-2018, 12:03 AM
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billdan (Bill)
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Join Date: Mar 2012
Location: Narangba, SE QLD
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Thanks a lot for that link Peter, there are some scary looking images there, halos etc.
It appears if the filter is 41mm away from the sensor the image look good, but when the filter is 31mm away from the sensor everything goes pear shaped.

With the ZWO ASI1600 camera and filter wheel, I think the distance between filter and sensor is about 15mm, so I have no idea how that will look.

Point taken about the blue filter cut off wavelength and the extra exposure time needed compared to the 2c blue. The gear will be used on my Newt and I think Strongman Mike uses Deep Sky RGB on his Newt, and I haven't heard him complain.

Cheers
Bill
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