Last updated: 4 July 2007
Subject: ETX70 piggyback mount Sent: Tuesday, July 3, 2007 02:52:16 From: email@example.com DSLR piggyback mount for ETX-70 I've mounted my DSLR via a dummy eyepiece in the flip-mirror port of my ETX-70 to take widefield star images as shown in the attached pictures. The camera and telephoto lens weighs a heavy 1kg and is counterbalanced with a weight from my LX200 mounted forward under the ETX-70 on a $1 PVC pipe-clip. I've chosen to use the scope in altaz mode and even with the additional 2kg weight the scope slews and tracks fine with no field rotation evident with lenses to 135mm focal length in 30sec exposures. The cropped field of Vega 'rising' in the east shows excellent altaz tracking to record mag 11 stars from suburbia with a static [trailed] shot for comparison. More pics on my homepage www.astroman.fsnet.co.uk/etx70pigy.htm Maurice Gavin firstname.lastname@example.org
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