From: "Terrence R. Redding, Ph.D." <tredding@mac.com>

Date: November 2, 2009 3:16:04 AM MST

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Re: How to mount a filter wheel

Tim, that is right.

It has the threads for the T-Adapter and should work.  I may have the hardware I need to set it up.  The only problem I am now aware of is whether I will be able to use Barlows with it?  It seems they normally mount extended inside the scope - and the filter wheel may be in the way.

Terry - W6LMJ - 14.287 

Terrence R. Redding, Ph.D. 

Redding Observatory South, West Palm Beach, Florida

http://olt.net/learningstyle/Site_2/Learning_Style_Research.html

How do amateur astronomers learn?

American Association of Variable Star

Observers (AAVSO): RTN http://www.aavso.org/

On Nov 1, 2009, at 4:41 PM, doobisary wrote:

Isn't the SX filter wheel mounted via pentax threads? Or t-threads? (which might be the same thing, I think). If so, you could check if your LX200 has a camera t-thread adapter that then screws onto the visual back.

-Tim.

--- In Astro_IIDC@yahoogroups.com, Terrence Redding <tredding@...> wrote:
>
> Don, that is right.
>
> Nothing in the documentation describes mounting the filter wheel on
> the camera or the scope. In my case I have an LX200R with electronic
> focuser. I assume I mount the filter wheel after the focuser, and
> before the camera. There is nothing that says which side of the wheel
> is towards the scope and which is towards the camera.
>
> The filter wheel has no mounting hardware. Assuming the labeling
> faces out, than it would appear some form of threaded coupler must go
> between the wheel and the scope. I assume a 2" adapter of some type.
>
> The side of the wheel I assume must attach to the camera does not have
> a way to couple to the camera - so some form of an adapter is required
> there as well to receive the nose of the camera.
>
> But as you can see I have a lot of assumptions and no instructions, or
> even a picture showing the filter wheel with a camera.
>
> I assume in a few days I will be among the many that know how to use
> the filter wheel with the LX200R and a variety of planetary imaging
> cameras. But I hate to loose another week, after waiting nine weeks
> for the filter wheel, to figure all of this out.
>
> That is why I am so thankful for groups like this which can lend
> assistance.
>
> The Starlight Express Filter Wheel is finely crafted, very quite and
> quick. I have the seven position filter wheel installed with the
> Baader LRGB-CCD-Filterset 1 1/4" installed. I like the idea of
> software control and a single USB cable for power and wheel control.
> I believe Starlight Express has another winning piece of kit. My
> serial number is SXFW-041 which implies it is only the 41st wheel made.
>
> I have uploaded the manual that came with the wheel to the file section:
> http://tech.groups.yahoo.com/group/starlightxpress/files/Redding%20Observatory%20South/
>
> The question is how do I mount the wheel to the scope. And how to I
> attach a camera. I am using integraing WAT-120N+ cameras, and small
> DMK21 firewire planetary imaging cameras at this time.
>
> I also have the DSI II and the DSI Pro II. The cameras all seem to
> need the same sort of mounting point - the same as an ocular.
>
>
> Terry - W6LMJ - 14.287
>
> Terrence R. Redding, Ph.D.
> Redding Observatory South, West Palm Beach, Florida
> http://olt.net/learningstyle/Site_2/Learning_Style_Research.html
> How do amateur astronomers learn?
> http://www.youtube.com/watch?v=zSgiXGELjbc
> American Association of Variable Star
> Observers (AAVSO): RTN http://www.aavso.org/
>
>
>
>
>
>
> On Oct 31, 2009, at 3:53 AM, LX200GPS@yahoogroups.com wrote:
>
> > Re: How to mount filter wheel
> > Posted by: "Donald" djd521@... astrojunkie52
> > Fri Oct 30, 2009 2:46 pm (PDT)
> >
> >
> >
> > Terry,
> >
> > Are you saying no instructions came with the filter wheel? I would
> > think going right to the source would get you an answer quickly in
> > the StarlightXpress Yahoogroup.
> >
> > http://tech.groups.yahoo.com/group/starlightxpress/
> >
> > Don
>