PST CaK mod

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bart1805
Im an EXPERT!
Im an EXPERT!
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Location: The Netherlands

Re: PST CaK mod

Post by bart1805 » Sat Oct 13, 2018 12:12 pm

Bob Yoesle wrote:
Fri May 18, 2018 7:27 pm
I use a standard 1.25 inch filter cell for the PST elements. I've used some scavenged parts and the Skybender unit, but will be revising this in the near future with a custom made set of components.
Hi Bob,
I tried a Baader and a Astronomik 1,25 inch filter cell, they are both too big. I suppose I need a "cheaper one" like this:
https://www.ebay.nl/itm/Venus-Planetary ... SwZ8ZW2db2
Baader and Astronomik clearly maximise the size and have tiny retaining rings, this one clearly does not. Am I correct?
Thanks and CS, Bart.

george9
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Re: PST CaK mod

Post by george9 » Sun Oct 14, 2018 2:06 am

I made cardboard rings to hold the PST elements within the larger 1.25 inch cells. I actually exploited that to make a very compact tilt mechanism: I basically push the cardboard along the threads on one side compared to the other. It was meant as a prototype, but I haven't felt the need to upgrade it.

George

bart1805
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Im an EXPERT!
Posts: 300
Joined: Mon Feb 06, 2017 9:04 pm
Location: The Netherlands

Re: PST CaK mod

Post by bart1805 » Sun Oct 14, 2018 7:43 am

george9 wrote:
Sun Oct 14, 2018 2:06 am
I made cardboard rings to hold the PST elements within the larger 1.25 inch cells.
Thanks George! I was thinking about 3D printing some rings.

Marsman
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Re: PST CaK mod

Post by Marsman » Sun Oct 14, 2018 7:41 pm

Hi
I have paid 160 as I see you only have 1.25 left but if you still have a 2 I would go fir it.
My address in 90 Mill Drove in the UK, if you need any further detail PM me.

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