Quote:
Originally Posted by silversheltie
thanks for your input Renato. Will see how it does.
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Just don't be unduly concerned if you initially get mushy images - it can just be due to the atmosphere - if the stars are flickering, you won't get a sharp image.
When I used to live in suburbia surrounded by houses, I'd often get mushy images some nights when I took my 80mm ED refractor to 160X or more - though I could see the cause of the mushiness by defocusing the image (sometimes it was the atmosphere, sometimes the neighbours' heaters). But on some nights I would get nice sharp images.
Unfortunately, now that I've moved out of sububia proper to a place surrounded by one acre blocks, but next to a gully and near the bay, I get mushy images most nights. Sharp images are a rarity here.
So pay attention to your surroundings - is the atmosphere flickering? Are you looking over your own house, or a neighbour's house which has been hot all day but is now cooling down? Or which now has heating going?
Regards,
Renato