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Old 20-10-2014, 08:43 PM
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pmrid (Peter)
Ageing badly.

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Join Date: May 2008
Location: Cloudy, light-polluted Bribie Is.
Posts: 3,678
Quote:
Originally Posted by LewisM View Post
Could you not delay the exposure until after the iris is open and stabilised? MaxIM has this feature in one of the side menu's, and I do this ALL the time with the FLI with a similar iris - I give it a 2 second delay between opening the iris before the exposure begins.

This would seem to circumvent the problem entirely - I also found short exposures BEFORE I used this technique showing the shadow of the iris.
I employed a more basic solution. A Chesty Bond special across the objective before mounting light box.

P
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