Re: Create a PEM curve with a camera?
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The PE curve will apply to the mount, and has no bearing on what happens to the main scope flexure. By definition the PE curve cannot store flexure and making a PE curve automatically throws out any flexure component because it is not periodic.
From: Stuart <stuart.j.heggie@...>
Sent: Wed, May 20, 2020 7:08 pm
Subject: Re: [ap-gto] Create a PEM curve with a camera?
Hey David, I'm sure you're right to be wondering about the guide scope approach. Have you used this guide scope / main scope together before and confirmed there is no flexure? If you haven't I'd be worried that you'll build a PEC curve for the guide scope only.
On Wed, 20 May 2020 at 20:06, <davidenck@...> wrote:
Hello All, This may be a silly question, but can I use an ASI 290 mini guide camera (2.9 pixel size) through my guide scope (162 mm focal length) to create a PEM curve for my AP1100 when the day comes? Or should it be through the main scope. It is a Meade lx850 14 inch SCT.. Thinking the guide scope would avoid any mirror shift and such.. My main imaging camera is a Canon T2i..