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Equipment Discussions >> Reflectors

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The Planetman
professor emeritus
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Reged: 01/27/06

Loc: Western KY
Ever tried a filter wheel?
      #5674038 - 02/11/13 01:08 PM

Has anyone ever visually tried a filter wheel with a newtonian/dobsonian....successfully that is...
My thinking is using this instead of buying 2" filters and a filter slide...


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David Knisely
Postmaster
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Reged: 04/19/04

Loc: southeastern Nebraska
Re: Ever tried a filter wheel? new [Re: The Planetman]
      #5674099 - 02/11/13 01:51 PM

The main problem is that some filter wheels when installed may be too tall to allow eyepieces to come to focus in some Newtonians that have low-profile focusers with limited travel. Some require that the primary mirror be moved up in the scope a bit (or in my case, the trusses be shortened). Clear skies to you.

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Bill Kocken
sage


Reged: 08/07/04

Loc: Coon Rapids, MN
Re: Ever tried a filter wheel? new [Re: The Planetman]
      #5674108 - 02/11/13 01:54 PM

I haven't tried it, but where would you mount it? On the outside of the UTA? In order to be inside, you would need a flat side on the UTA. I suppose a square or "D" shaped UTA would allow that.

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The Planetman
professor emeritus
*****

Reged: 01/27/06

Loc: Western KY
Re: Ever tried a filter wheel? new [Re: David Knisely]
      #5674112 - 02/11/13 01:55 PM

I think I can easily work around any focus issues.
It would mount between the focuser and eyepiece.
I'm thinking that this would be no different than using one of the Lumicon filter slides...as far as filter position relative to the eyepiece is concerned.


Edited by The Planetman (02/11/13 01:58 PM)


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dyslexic nam
Carpal Tunnel
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Reged: 01/28/08

Loc: PEI, Canada
Re: Ever tried a filter wheel? new [Re: The Planetman]
      #5674271 - 02/11/13 03:37 PM

Some info I previously posted here, here, and here.

Cheers


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hbanich
Pooh-Bah
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Reged: 06/17/05

Loc: Portland, Oregon
Re: Ever tried a filter wheel? new [Re: The Planetman]
      #5674285 - 02/11/13 03:48 PM Attachment (8 downloads)

I've had a filter wheel on my 28 inch scope for about 8 years now and have found it to be the main reason I use my filters so much. I got mine from Aurora Precision http://www.aurorap.com/prod-filter-wheel.htm and covered both sides of the wheel with a thin sheet of ABS plastic to keep the filters clean and to prevent dew from forming. Its worked great, and I particularly like the click stop feature so I know when the filter is centered.

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The Planetman
professor emeritus
*****

Reged: 01/27/06

Loc: Western KY
Re: Ever tried a filter wheel? new [Re: hbanich]
      #5674359 - 02/11/13 04:25 PM

That's exactly what I am planning on doing with mine Shaun! Thanks for the info!!

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