Quote:
Originally Posted by Merlin66
Different boxes and different %ages give a series of different images.
I’ve tried 5% v’s 10% and up to 50% settings.
When I compare the images produced I’m not sure there is a great difference.
|
yes I find the same usually. But yes thats what the boxes are for, so you can create a number of images using different quality constraints in one go. I don't think my captures are close enough with enough detail for differences to become obvious. I think my focus is out more than the difference between best 5% vs 50% of frames.
I don't process further since AS! uses wavelets for sharpening already so I don't like pushing it hard with more in another program. However many people do and many have better gear than me (better magnification and more detail captures etc) so I suggest you test for yourself.
Test by setting 25 and 75% as output stacks as TIF files. Takes these two saved files into your photo software of choice and load one on top of the other as a separate layer in the image (which one doesn't matter). Now you can do a difference between them, a method to do the same is to Invert the colours of the top layer image and then set its opacity to 50%. Now flatten the image, so its one layer with the changes above applied. It should look basically an even grey at this point. you can play with levels and contrast to exagerrate any image in the greyness. this image is the difference between the two source images. if the two are identical you wont see anything in the grey image, its all grey (test by doing this process with any image duplicating it to a second layer.)
However if you are seeing the outline of your planet or distinct rings for saturn or bands on jupiter or and surface detail at all then this represents signal that is lost (ie detail) between the 25% and 75% stacks. It may be sharp or it may be faint/indistinct, or not there at all. But its an indication there IS a real difference between using the 25% and 75% stack options and use that to inform your workflow decisions.
you can also try running frames through winjupos to derotate then stack source and derotated separately to see if there is a detail difference to make it worth bothering with.