SharpCap Forums

I have taken solar flats (wax paper method) and they worked very well. At the time, I shot full sensor (3096 x 2080) flats with my ASI178MM and full sensor video of the sun. No problems there.

Can I shoot flats with the full sensor, then capture data with a ROI and have the flat correctly applied to the ROI? What I want to do is use an 1800 x 1800 ROI, and move it around with tilt/pan to keep the drifting sun centered in my ROI.

Hi,

yes, this will work in recent versions of SharpCap - the program will spot that your flat is for the full resolution and cut out of it the area to match the current ROI size and position. It also works for darks.

Note that you should avoid using the 'flip' function of some cameras with darks/flats (or, if you do, you have to take the flats/darks with the same flip settings). SharpCap 4.1 now has a 'Flip (after dark/flat)' option that works around this limitation by applying the flip later in the frame processing pipeline.

cheers,

Robin

Excellent and thank you. What a great program!!!