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Old 09-10-2019, 08:41 AM
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The_bluester (Paul)
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Join Date: Feb 2011
Location: Kilmore, Australia
Posts: 2,266
I can’t comment directly on the 1600 as I don’t have one and have not seen images taken with one without any filter at all, but on both my scopes the biggest issue for the 294 was major reflections that a bit of calculation nailed down to reflections between the sensor and the AR window on the camera, presumably the camera was sensitive into wavelengths that the AR windows anti reflective treatment was ineffective.

There were some issues with blobby stars at both ends of the spectrum and increased background brightness but the biggest problems were some really spectacular reflections.
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