Thanks. Putting the folding hood on your Pentax 6x7 in lieu of the prism will help reduce the weight some.
I was going to try my barn door tracker out on the Alvord Desert but somehow it was left behind. So I just did a 500-Rule shot. The tent light was on only for a fraction of the total exposure.
Alvord Desert Stars by tuco, on Flickr
Nikon Df, Zeiss 21/2.8
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