Best way to check image quality of exposures?

[Ross1204]

Hi,

So after watching and reading multiple tutorials about image processing (DSS & Photoshop) I can't help but notice they all suggest only stacking your best exposures. This obviously makes sense as surely adding poor quality exposures would ultimately degrade the final picture do a certain extent.

So with this being said how do people check what exposures they should stack? 

Thanks

Ross

 

[Anthonyexmouth]

DSS can do a lot of the checking. set the percentage to best 75% or whatever number you like

[Marky1973]

I think DSS scores each image so you can decide a threshold under which to discard images that might not meet the required quality. I haven't used it for a while so can't remember what the scores are. But it is a quick rough and ready way to check them

Pixinsight has a checking tool where you can also run through your images in sequence to check quality and discard those you aren't happy with...clouds and satellite trails for instance. It's not a cheap programme but you can trial it to see if you like it.

[Ross1204]

Thanks for the replies.

I best just stick with DSS then until the funds allow me to make the jump to Pixinsight. 

Ross 

[symmetal]

Main Sequence Software who wrote SGP have some free utilities on their downloads page. One of them is FITS Image grader which will score all images in a folder (including subfolders if you wish) and also give an HFR for each image. The score can optionally be appended to the filename (original or a copy). It also gives a  summery giving the average scores for each filter. I find it useful. ?

Alan