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tjmck
super member


Reged: 10/06/07
Posts: 117
Loc: Winnipeg, Manitoba, Canada
Re: home made collimating sight tube
      07/03/08 10:28 PM

John,

I have also used the method WOJO describes.

Thought I would add to the thread that for a 2" focuser, built in vacuum systems use PVC pipe that has a 2" outside diameter. You may have to check a few pieces to find one that works as the dimensional quality control is not all that good. The good news is that most vacuum installation places / contractors have off cuts that they will normally give you once you educate them what you will use it for.

tjmck

--------------------
10" F4.7 Dob - home built
Meade ETX-125PE, 1247 Focuser, DSI Colour
Pentax 20x60 PCF WPII w/ home made parallelogram mount
Numerous eyepieces (don't we all have them?)
Home made accessories: power center, dew controller, observing chair, Hartmann mask, dew shields, counter weights, cases and storage solutions.
Inspiration for most modifications and home made items from CN posts!


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Entire thread
Subject Posted by Posted on
* home made collimating sight tube jstephany 05/10/08 12:21 PM
. * Re: home made collimating sight tube Mirzam   05/10/08 12:40 PM
. * Re: home made collimating sight tube okiestarman56   05/10/08 05:14 PM
. * Re: home made collimating sight tube wojo   05/10/08 08:11 PM
. * Re: home made collimating sight tube Darenwh   05/10/08 08:31 PM
. * Re: home made collimating sight tube jstephany   05/11/08 05:17 PM
. * Re: home made collimating sight tube jstephany   05/11/08 05:34 PM
. * Re: home made collimating sight tube David L   05/11/08 09:36 PM
. * Re: home made collimating sight tube okiestarman56   05/11/08 11:20 PM
. * Re: home made collimating sight tube Show-me   07/03/08 12:59 PM
. * Re: home made collimating sight tube wojo   07/03/08 08:31 PM
. * Re: home made collimating sight tube tjmck   07/03/08 10:28 PM
. * Re: home made collimating sight tube Tom Andrews   07/05/08 01:56 AM
. * Re: home made collimating sight tube Tom Andrews   07/05/08 01:58 AM
. * Re: home made collimating sight tube Biff   07/05/08 02:35 PM

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