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Dave,
To be honest I think the original presented image looks much better , cleaner , sharper and more detail. Colours more natural ( only my opinion)
I just shoot galaxies without a filter on the 2600MC ( internal IR Cut ) and end up getting better colour and detail at my puny focal length let alone +2000mm
Unfortunately you have to be patient and score clear nights during the new moon period of 10 days or so ( a small window of opportunity)
As far as dew goes , I’m not fully automated at both sites and don’t want to be as I find the worst atmospheric conditions are between 1am and dawn at both imaging locations. It’s worse down the coast as I’m located 150m from the beach up on a hill and we often get sea mist rolling in through the wee hours ( unless wind is around through the night )
I always get my best subs early on to just past midnight
Ive learnt to wrap up a session no later than 1am to 2am or thereabouts ( dependent on the targets position)
Maybe shorten your sessions to automatically finish around 1 to 2am ??
Just a suggestion ?
Also I check Weatherzone and CFN for humidity and dew point data through the night , if the humidity is above 85% early on , I don’t bother imaging as sure enough, I go outside at 8pm and the scopes cloak and workstation weather cover is dripping wet. I have dew heaters but they can only do so much on a Open tube Newt.
Cheers
Martin
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