Megrez 72 focus for DSLR

[mcgibbon]

Hi all

I've recently got a 72mm Megrez and tried attaching my Panasonic GF-1 with a t mount and 1.25" nose piece.

I wasn't expecting it to achieve focus - and it didn't. Another inch would appear to do it.

My options appear to be:

Buy WO or similar 2" extension tube

Or

Buy WO or similar prime focus tube for direct fixing to t mount

However, I also think I'll need the WO field flattener for imaging. Will this negate the need for either of the extension tubes above or would I need a tube extender with the field flattener too?

Any help appreciated, cheers.

[steppenwolf]

A WO field flattener will lessen the backfocus requirement. If you are going to get a FR anyway (and this will improve the peripheral star shapes in your images), I'd try focus first with just the FR and, if necessary, buy the extension tube later.

[Psychobilly]

Yep no need for an extension with the FFIII I have the older version.. but the new one is supposed to be a much better match to the Megrez72 and is cheaper as well...

Peter...

[mcgibbon]

Thanks guys you've been a great help.

[mcut]

am about to give imaging a go myself.

i have a Skywatcher Skymax 127 but am primarily thinking of using my Megrez 72FD. it is the older version without a DDG focuser.

I have recently purchased a Pentax K5 DSLR and want to mount the Megrez on it.

can someone confirm whether the following would be suitable:-

Max DSLR 2" camera adapter

WO 0.8 Reducer III

thanks

[Coco]

These work very well.. all you will need is the EOS adapter to mount it directly, its a flattener so you won’t lose the focal length.

http://www.harrisontelescopes.co.uk/acatalog/SkyWatcher_Field_Flattener_2_.html