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Old 14-09-2020, 06:14 AM
RyanJones
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Join Date: Jun 2018
Location: Melbourne,Australia
Posts: 1,086
Certainly does sound like you have the right filter in place Daniel. My next question would be is there any chance that you have a light layer of dew building up on the filter ? I had this happen on my filter on my DSLR. I would have thought in therory that in a refractor system, that should be mostly sealed off but I guess if there is moisture in the focuser when you put the camera in it is in theory possible. This would cause a defraction of the light causing the bloat. Can you maybe compare an early sub and see if the ď iris ď is there ? If that isnít happening, Iím really not sure but youíve posted an interesting problem and Iíll be watching keenly to see what the outcome is.

Ryan
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