Darren, have you considered using LiveView and manual focus to do the fine adjustment?
Interesting to see that Registax does a decent job of deconvoluting slightly misfocused shots. If you used the 12 sec. self timer, the SR is automatically turned off, I think. It does turn off with the two second timer so I believe it would work that way with the longer timer too. Jostein Den 26. oktober 2014 18:44:48 CET, skrev Darren Addy <[email protected]>: >Decided I couldn't let Sunspot Group 2192 (the largest in 24 years) >get away without trying to capture it. I slipped my home made solar >filter over the Bigma's hood and tried some captures with the K-3. I >have yet to apply the AF adjustment to this lens (but sunspots would >be an excellent way to dial it in, I think!) so I attempted it with >manual focus using an Olympus Vari-Magni attached to the viewfinder. I >still don't think I got a single frame perfectly sharp. I think I >forgot to turn off Image Stabilization. Images taken at high shutter >speed and f/9 or so. 12 second self-time was used in an attempt to >reduce vibration. > >So I evaluated all the images and picked the 3 that appeared closest >to sharp and converted the DNG to TIF. Then I cropped them to 2000 x >2000 pixel squares and aligned and stacked those 3 images using the >free Registax6. > >Here is a screenshot image that shows the improvement made by this >Registax6 processing. >https://www.flickr.com/photos/pixelsmithy/15609849676/ >Pixel-peeping has its place in astrophotography post-processing. >:) > >This was simply to get the best image to perform post-processing on. >I'm still learning to post-process solar images and so I followed the >recipe given by this guy: >http://www.perseus.gr/Astro-Tips-Solar-Process.htm > >Thanks to his reducing the image twice, this results in a smaller >image than I would have liked (only 845 x 845) but I saved copies at >each step and may go back and try to adjust his process to save a >larger version. > >Here is the Flickr page of the final result: >https://www.flickr.com/photos/pixelsmithy/15634739362/ > >Comments and criticism welcome in equal measure. > >Darren Addy >Kearney, Nebraska -- Sent from my Android device with K-9 Mail. Please excuse my brevity. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
