6 x 10 minute exposures on May 28, 2009 @ 800 ISO. Compare this view with the images below, FL was 955mm compared to 570mm with the Keller corrector.
This image was made with a modified Canon 40D, and a 20-cm (8") ASA Astrograph @ f/4.8 using a Televue Paracorr. SQM reading was 20.7.
This is a 100% crop from the above image, click on it to see the full frame in full resolution. The alignment of the Paracorr was not perfect yet.
15 x 2 minute exposures on May 17, 2007 at 1600 ISO.
Although it was still quite low in the sky, I couldn't resist imaging it before the summer brings the grey nights here at 53° North.
This image was made with a modified Canon 350D, and a 20-cm (8") f/2.75 ASA Astrograph.