Re: Adapter for Toucam

"Pete Lawrence" <pete.lawrence@xxxxxxxxxxxx> wrote in message
news:4prht1dvpugccoknkfmt9nksr4rbp44ofb@xxxxxxxxxx

> I'm not sure if I understand this correctly. Are you saying that at
> p/f the camera is too far out to be held by the eyepiece holder? The
> last sentence is about the eyepiece projection unit - is that correct?
>
> A simple solution to not having enough focuser extension is to take
> one of your Barlows and unscrew the lens at its base. Put this safely
> to one side (for when you want to use it as a Barlow again) and use
> the main Barlow tube as an extension piece. This will hold the camera
> out much further and, hopefully, allow you to achieve focus.

When in use the eye-pieces/barlows fit into a tube 3-4 inches long, which
screws into the focus mount, with the my old SLR, you'd tube remove this to
screw in the T-adapter

This tube is too long to be used with the toucam+adapter, and yet the plain
focus mount is too short - had about 30 minutes of clearish skies with
clouds here and there so improvised with some paper holding it about an inch
out of the focus mount.

The 4x barlow I've got which came with the scope is another 3-4 inches long,
a lot of the barlows I've seen in more recent years are a lot shorter,
including Tal's own 3x one.

Anyway I did manage to get a few minutes on Saturn before the cloud came
over. Was very hectic, the laptop had died after using it all afternoon, it
clouded over rushed it inside to try and get some battery in it, and managed
to give it enough to take 3 minutes of video, most of which was behind
cloud. But got this out of it...

http://blogs.dasmirnov.net/media/20060126saturn.png

My objective was the Cassini division, may be next time, if I can get things
a bit more stable - I've got match sticks in mind to try and extend the
toucam's adapter a bit.

Have to sort the barlow thing out another time if I can get someone else
who's got the same setup as me to let me know what definitely works and what
doesn't, as I don't have the money to spend on a barlow that's not use.

Oh well it's good to be back after I abounded astrophotography in '97, and
it still seems to be a game for people who improvise on the spot when
nothing works like it's expected. 8-)

--
Paul Smith,
Yeovil, UK.
Microsoft MVP Windows Shell/User.
http://www.windowsresource.net/

*Replace nospam with smirnov to reply by e-mail*


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Relevant Pages

  • Re: Adapter for Toucam
    ... >inch away from the focus mount to get it in focus. ... >fit into is a good 3-4 inches and holds the camera too far out to focus. ... A simple solution to not having enough focuser extension is to take ... the main Barlow tube as an extension piece. ...
    (uk.sci.astronomy)
  • Re: eyepiece projection setup recommendations?
    ... >>attaching the camera to it or if they used it in eyepiece projection. ... >>considering buying a barlow, if for no other reason than the fact that it ... Many digital cameras have built-in lenses ... > it isn't the same thing, but you use the same sort of adapters). ...
    (sci.astro.amateur)
  • Re: eyepiece projection setup recommendations?
    ... >attaching the camera to it or if they used it in eyepiece projection. ... >considering buying a barlow, if for no other reason than the fact that it ... I'm talking about a setup involving a video camera ... Chris L Peterson ...
    (sci.astro.amateur)
  • Re: Some advice needed for newcomer
    ... > 350D Digital SLR Camera ... > I know I must get a T adapter for my scope and also one for my camera. ... > x2 barlow. ... I have been advised to go for the Orion Shorty but this ...
    (sci.astro.amateur)
  • Re: Newb Q: M31 (Andromeda) In an 8 Newt
    ... Brian Tung wrote: ... I'm quite sure the ETX-125 doesn't even have a tube length of ... The secondary acts almost like a Barlow, ...
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