Posted by A R Pratt at 11:08 on 2012 Sep 05
Hi Martin,Yes, the photos were taken at prime focus of the 20cm aperture f/20 Mak-Cass. I also have an Apo Barlow lens with built-in T-mount adapter, which gives more magnification.Lunar images at 4000×3000 pixels are beautiful to look at, and are nice to use in presentations.A time delay of a few seconds between exposures shouldn’t be a problem for most lunar images. For example, the shadows cast across Plato during sunrise can be seen to change over periods of 15 minutes or so, but if you can take a series of images within 3 or 4 minutes they should be OK.Registax is free to download and use, and its website has some good tutorials to get you started.Cheers, Alex.