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Old 03-06-2010, 04:12 PM
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mldee (Mike)
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QHY8 SLR Lens adaptors

A quick tip for those of us who may not have access to precision engineering skills. I wanted to use my trusty old Pentax Takumar bayonet-mount 50 & 135mm lenses with my QHY8, having previously bought the nose piece mounting adaptor clamp from Peter Tan.

To cut a long story short, Peter offered to have the correct adaptor made up, in aluminium, with male T thread on one end, Pentax female bayonet (camera-side) receptacle on the other end, spaced to allow correct focus distance for a QHY8 sensor to lens. All for AUD45 plus postage. Bought a few other trinkets to defray that. Peter gives good service!

Total length is about 20cm and I just checked it, works great. Now for those nice ultra widefield shots with my QHY8 on a guided mount!
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Old 04-06-2010, 08:04 AM
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Phil Hart
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Thanks for the note Mike.. may consider a widefield QHY8 setup in my future :-)

Can you also post a link to help others find Peter Tan online..

Phil
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Old 04-06-2010, 08:12 AM
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multiweb (Marc)
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Mine's 25mm from bayonet face to camera face. I originally bought the first one 2 yrs ago and figured out the adapter had to be 13mm shorter because you can't break the camera seal. The Pentax lens assembly are not air proof and the CCD will ice up in no time. So Peter had to re-cut one for me. Just some clarification. Keep the nose piece on.
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Old 04-06-2010, 10:50 AM
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mldee (Mike)
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Phil and Marc, thanks for the additional comments. I note Marc kindly added a link to Peter Tan if anyone's looking for it.

And yes, mine's 25mm depth too. I took a couple of happy snaps below while I was measuring it just now. Peter's SS mount is fixed to an ADM vixen clamp, which then makes it simple to attach to a vixen rail on your main scope for a night of carefree widefield work.
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Old 04-06-2010, 01:56 PM
gbeal
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And if he has carried on with the suggestions I made when he was looking at manufacturing these, it will unscrew, and expose a 48mm thread inside, so you can it an Ha (or any other) filter within.
Gary
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Old 04-06-2010, 02:02 PM
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multiweb (Marc)
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Quote:
Originally Posted by gbeal View Post
And if he has carried on with the suggestions I made when he was looking at manufacturing these, it will unscrew, and expose a 48mm thread inside, so you can it an Ha (or any other) filter within.
Gary
Dam! That must have happened on the latest release I have some packing inside to hold mine in place. Works. Sort of
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Old 04-06-2010, 08:27 PM
Hagar (Doug)
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Peter Lee's web site: http://www.tan14.com/gears.htm
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Old 04-06-2010, 08:56 PM
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Octane (Humayun)
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+1 for Peter Lee's service.

I had him send me an STL-EOS adapter so I could chuck my L-series glass onto my STL-11000M. Arrived in 4 days and all for the princely sum of about $50. This is four times cheaper than what another overseas manufacturer wanted.

H
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