Help ruined images - looking for some astro imaging software
I came across some software a while back that was able to derotate an image and make it "right" from star trailing. I cant for the life of me find the software or remember its name.......any ideas?
say you have taken a set of images 5min or more and you have some trailing in them, rather than waste them I do remember seeing some software out there that offered the ability to remap the star trails and make the image " whole" again.
hOughy, there is to my knowlege 2 programs, however they will not fix elongated images, just stack images that have rotation. I beleive you need photshop and the knowhow to apply an offset filter to those 5min eggs.
The shortfall with this method is that you loose a little intensity, but at least not the whole image.
Hi Houghy, I have found that the Image Processing software in Meade's Autostar suite aligns trailed stars very well. Could that be the one yor thinking of.
Hi Houghy, I have found that the Image Processing software in Meade's Autostar suite aligns trailed stars very well. Could that be the one yor thinking of.
Astovideo, was developed by the QCUAG to allow software integration so that you could capture with a camera on a fixed tripod. Is that what your looking for?
Ric, I have Meade envisage but I have never used the 'drizzle' feature. My understanding of it was that it will rotate the image at each integration to combat field rotation caused by an Alt/Az mount. Any elongation within any one individual sub frame however would not be corrected, in fact any such sub frame would be rejected unless the quality setting was made very low ie. 10% or less.
Is this not true?
hOughy, I'll put a package together and PM it to you if no better help arrives. The proceedure is very simple and might work with Gimp if you do not have Photoshop (any version from about 5 onwards should work).
You might have to manually align your corrected frames.
Hi Doug, that is correct. You can then group the individual images using the Image Processing software in the Autostar suite and do a 2 star align on them and clean up any minor movement.
All of my images are taken in Alt/Az using the Drizzle function and I find it is very effective as long as you keep the exposures to 30 seconds or less.
