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Equipment Discussions >> Equipment

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Starman81
Carpal Tunnel
*****

Reged: 03/06/08

Loc: Metro Detroit, MI, USA
Re: Orion Low Profile Focuser installation Issue XT8i new [Re: BDS316]
      #5540285 - 11/26/12 01:11 PM

That is a sweet-looking scope Bryan! I was definitely considering the Moonlite as well, but found a good used deal on the focuser mentioned in this thread and was luckily able to make it work.

Do you have to use counterweights for the Moonlite? I don't see any in the pic but I know others have stated such.


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BDS316
Carpal Tunnel


Reged: 09/16/09

Loc: Sol 3
Re: Orion Low Profile Focuser installation Issue XT8i new [Re: Starman81]
      #5540313 - 11/26/12 01:33 PM

Quote:

That is a sweet-looking scope Bryan! I was definitely considering the Moonlite as well, but found a good used deal on the focuser mentioned in this thread and was luckily able to make it work.

Do you have to use counterweights for the Moonlite? I don't see any in the pic but I know others have stated such.




I have used a few different counterweight systems on GoldenEye (so named for the Golden colored Moonlite) but the focuser isn't that heavy. Balancing is for the Telrad/dew shield and the heavy eyepieces more than anything.

I got epoxy-coated doughnut magnets 3 inches diameter about half a pound each form American Science and Surplus for a few bucks each and three of them balance the scope nicely when put on the bottom of the tube opposite the focuser and Telrad, not seen in the picture.


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Starman1
Vendor (EyepiecesEtc.com)
*****

Reged: 06/24/03

Loc: Los Angeles
Re: Orion Low Profile Focuser installation Issue XT8i [Re: BDS316]
      #5540528 - 11/26/12 03:33 PM

The OP's replacement focuser is made by LongPerng in Taiwan, and is every bit as good as the GSO focusers.
The issue is the sliding focuser tube, and here is how to use it correctly.
Find out which eyepiece requires more out-movement of the focuser to achieve focus. Slide the tube out *just* to the point where this eyepiece focuses. Lock the drawtube slider in place at that point and never move it again. You can measure how far out it is at several points if you think it's not square.
Since every other eyepiece should come to focus with the focuser slightly racked in, this should allow all eyepieces to focus with the least amount of extension on the sliding tube.
By the way, the sliding tube was designed around the use of cameras, which typically require a much more Inward position of the focuser than eyepieces.
I've used this focuser and like it a lot.


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