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Old 19-04-2016, 04:48 PM
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strongmanmike (Michael)
Highest Observatory in Oz

strongmanmike is offline
 
Join Date: May 2006
Location: Canberra
Posts: 17,694
Quote:
Originally Posted by philiphart View Post
It is superb Troy. I'm not done with this region yet either :-) Sounds like an epic pano project you're attempting - 200 panels! You've clearly got an impressive processing workflow going to be able to merge it this well. I am amazed!

There are two issues mounting lenses to sensors - one is the back focus required, the other is the image size the lens will form.

The 16803 sensor is 36mm * 36mm with diagonal of 52mm. It's unlikely the Zeiss will do much more than the diagonal of standard 35mm format which is 43mm. Same will be true for just about any lens designed for 35mm.

The flange focus distance for the Zeiss like any Canon EOS/EF lens is 44mm. There aren't many mono CCD and filter wheel combinations you can fit in that space, given that you also need an EOS adapter in there.

Jason Jennings is using an Apogee camera at least partly for the minimum back focus required.. just 26mm. The same CG16070 camera body also comes in a 16803 version. That would leave you 18mm for filter wheel plus EOS adapter. Pretty tight! But possible? But you'd be wasting your time as the lens won't work well with sensor that size. You really need medium format lenses for bigger sensors.. I've got a Pentax 6*7 format lens currently paired with a QHY9 but waiting for the day I can afford 16803 or similar to go with it!

Phil
Thanks for that Phil, exactly what I was thinking ie. Pentax 6X7 lenses, they are just not well corrected for colour, great for NB though.

I'm likeing the look of the Vixen 100mm F3 actually

Sorry Troy, I'll cut the off topic banter there

Mike

Mike
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