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Old 26-09-2005, 09:46 PM
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seeker372011 (Narayan)
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whats your technique for imaging Venus

Every time I turn my scope (a newt) on to Venus and try to get an image I get massive diffraction spikes...how do you experts avoid this?
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Old 27-09-2005, 06:54 AM
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iceman (Mike)
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Turn the exposure or frame rate down

I've never had problems with spikes on Venus, with my newt. Because it's so bright, I usually use 1/33 or 1/50s exposure, with zero gain if possible.
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Old 27-09-2005, 09:04 AM
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even at 1/33 I got spikes, however I kept gain at about 20 %..maybe that's the problem
thanks for the tip
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Old 29-09-2005, 08:50 PM
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Imaging well before sunset against a bright sky also helps (I am assuming you are doing this) and using a filter even if it's a light blue W82A can help reduce glare a little.

Have not had this problem on my reflector but have done my Venus imaging recently at 1/200 sec, 10fps and 15% gain.
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