Helical focuser

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Canopus Lim
Posts: 1144
Joined: Fri Jun 03, 2005 12:46 pm
Location: Macpherson

Helical focuser

Post by Canopus Lim »

Hi I'm looking for a 2 inch helical focuser to be placed in my dob's 2 inch rack and pinon focuser. Anyone who wants to sell one at good price?
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rlow
Posts: 2401
Joined: Fri Oct 31, 2003 7:36 pm
Location: Jurong

Post by rlow »

for your info, I have tried the Orion Helical Fine Focuser, quite good, smooth, though not as smooth as the Wolanski model, but cheaper, available and good enough for its purpose.
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acc
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Posts: 2577
Joined: Mon Sep 22, 2003 11:15 pm
Favourite scope: Mag1 Instruments 12.5" Portaball

Post by acc »

Alternatively, try using parfocalization rings. :)
We do it in the dark...
Portaball 12.5"
Takahashi Mewlon 210
William Optics 110ED
...and all night long!
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