T mount lens adaptors

dang - I linked to the wrong page. Let me go find the right one. Sorry about that...

Ken, thanks for the link. I've looked at similar pictures of adaptors but they had me confused because the adaptor has 2 female threads which means that the camera would have to have a male thread & I've never seen a camera like that.

I've found this article which suggests that the 'T' mount system consists of 2 parts with the adaptor as in your link fitting to the lens & a series of camera specific adaptors to match. I guess that for say, a Nikon camera this would have an 'F' mount bayonet at one end & the M42 male thread at the other end but I still don't know how long it should be to maintain the correct back focal length of the lens.

I guess one way out would be to buy an adaptor & just measure it.

I have a 400 mm lens (and maybe a 35 mm, I'm not sure I still have it) with a T-mount for a Nikon camera (bayonet mount). I can measure it and sent you the dimensions, or sell the 35 mm if I have it. I paid less than $50, so I won't ask much. E-mail me it you're interested.

Thanks for the offer, the measurements would be useful. Unfortunately the lenses are no use to us as we would be making the other end of the system, whatever fits to it would be our customers responsibility.

Have you tried below? SRB ~ Griturn

Specialise in Lens Adapters, Scopes Tripods and Camera Accessories.
www.srb-griturn.com

Best of luck

Thanks for the link, that was useful.

I think that I need to check what our customer intends to fit to our detector then buy a camera adaptor to suit & base my adaptor on that.

"...check what our customer intends to fit to our detector..."

Yes, defining the parameters is usually a preferable step. Actually, I'm a bit surprised that information wasn't part of the initial RFP. Wot's it detect, then?

We know it fits to a telescope but I don't know if it goes onto an eyepiece or a side mount of if they are viewing through a lens. This is not unusual in our business, we often get orders from academics asking for widgets to measure something without any information about where it fits or how they want it to work.

We make a whole range of detectors for imaging or measuring light all the way from the visible & into U.V. and X-ray but this particular detector is for energy and time spectroscopy so it will measure the rate & direction of low levels of light (down to single photons) entering the detector.

Way cool - sounds like an ultra-good CCD (SQUID? - but don't take it that I'm prying...)!

Sort of like a CCD, we quite often make detectors that output images into a CCD camera but our detectors work at much lower levels of light & can be switched on and off very quickly (in low numbers of picoseconds or even femtoseconds depending on the detector type).

The way our detectors were explained to me long ago was that, if you go outside on a black, starless, moonless night when there is no illumination & you can't see your hand in front of your face, that would be so much light that it would saturate our detectors.