Quote:
Originally Posted by Star Catcher
A classy production Peter! With so many frames you certainly have excellent odds for unwanted gremlins. 
My experiences for what they are worth:
I have found solar flats can change during even short sessions. The newton rings can shift position slightly and I suspect this is mainly from temperature shifts that alter pressure on backend optical surfaces that are either fixed or held by metal surfaces. I have also seen the rings shift when doing a median flip, but these are likely to be flexure forces.
I am not sure what capture program you are using but Fire Capture gives you some visual feedback as to whether your flat is being effective because it is applied during viewing and capture. If it is no good, redo the flat and retake the video again.
And yes I still get caught with flats that are not quite right!
Ted |
Thanks Ted....I do indeed use FireCapture, and hadn't realised it could apply a flat "on the fly". Excellent! Will give it a go
