kalmarau
20-06-2006, 11:00 PM
Hello all,
Does anyone know anything about "borg" helical focusers? There is one listed here
http://www.sciencecenter.net/hutech/borg/parts/html/7315.htm
which can be used with this adapter
http://www.sciencecenter.net/hutech/borg/parts/html/7316.htm
to fit into a 1.25" eyepeice holder.
I've ordered an Orion 150mm Mak, which only takes 1.25" eyepieces, but I am a bit concerned that racking the primary mirror back and forth might prove frustrating when it comes time to get that focus razor-sharp.
The Mak won't take any crayford focuser, or any 2" adapter, so I suspect that I have to borg-ify the Mak if the focus knob is too coarse.
Any advice on helical focusers in general, and this model in particular?
Cheers,
John
Does anyone know anything about "borg" helical focusers? There is one listed here
http://www.sciencecenter.net/hutech/borg/parts/html/7315.htm
which can be used with this adapter
http://www.sciencecenter.net/hutech/borg/parts/html/7316.htm
to fit into a 1.25" eyepeice holder.
I've ordered an Orion 150mm Mak, which only takes 1.25" eyepieces, but I am a bit concerned that racking the primary mirror back and forth might prove frustrating when it comes time to get that focus razor-sharp.
The Mak won't take any crayford focuser, or any 2" adapter, so I suspect that I have to borg-ify the Mak if the focus knob is too coarse.
Any advice on helical focusers in general, and this model in particular?
Cheers,
John