This was just a quick test for the Meade 10" SN.
Details Canon 5DH, Meade 10" SN, Baader MPCC,Hutech LPR filter.
Exposures all at 250 ISO, 3x( 15s, 30s, 1m , 2m ) Warm night about 26C. Stacked and aligned with Registar. EasyHDR used to generate and LDR image from this data.
Large image 1.5MB
http://members.optusnet.com.au/~avandonk1/jbox.jpg
I am going to try the Hutech focal reducer in place of the MPCC should give me less vignetting. Should also make the 10" SN a bit faster f3.5 at least.
Bert