Re: [APML] [OT] T-Thread adapter measurements

["Richard Kellogg" <rkellog1@twcny.rr.com>]

Emmanuele,

T threads are 42 mm diameter, 0.75 mm pitch.


Rick


----- Original Message -----
From: "Emmanuele Sordini" <vega@ulisse.it>
To: <astro-photo@seds.org>
Sent: Saturday, January 12, 2002 10:41 AM
Subject: [APML] [OT] T-Thread adapter measurements


> Hello everybody,
> I should have a friend of mine machine a custom adapter to fit into the
> back of a standard prime focus or eyepiece projection adapter, i.e. a
> simple T-thread adapter. Trouble is, I both have T-thread rings for
cameras
> and telescope accessories to fit them onto, but I don't know the exact
> measurements for the T-thread connection (diameter, thread pitch, etc),
nor
> do I have any tool to get those values exactly.
> So, anybody out there know them, or could point me to some online link or
> publication where to get them from? Of course, a drawing or a sketch would
> be of great help.
>
> Thanks in advance,
> Emmanuele
>
>
>
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