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I was just reading about how to build a cold box for the DSLR using Peltier technology, it reduces the camera body temp. by 40F, thats something I could do. ( QLD humidity may stop that idea). Probably have to pay for the filter mod though.
Am I right in saying the F4 is supplied camera ready as far as back-focus is concerned ( its advertised as an astrograph). If so the TS-9 may work straight away without any mucking around with longer collimation bolts.
On my 12 inch I had to install a low profile focuser for my DSLR to achieve focus, so I can always use that.
Bill
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