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Old 29-11-2010, 10:38 AM
Barrykgerdes
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Barrykgerdes is offline
 
Join Date: Feb 2007
Location: Beaumont Hills NSW
Posts: 2,900
Reading through that Promo list. It doesn't really give much info when analysed.

Dual Encoder Design
Does this mean two encoders on each axis as well as a step counter for the stepper motor, or is it a servo system just using a stepper and encoder for motive power and an encoder on the RA/Dec axes?

Motors
A .9dg per step is quite standard and will need at least a 60 x 60 x 3 (10800) reduction to get a reasonable resolution of .3 arc seconds per step (common for cheap servo systems). Then to get a reasonable slew rate the motors will need to accept at least 10000 steps/sec

Computer Operation
I think this is just referring to the inbuilt controller. I would assume that it could interface with a PC/laptop as well

PEC
Permanently stored PEC is available on most drives these days and considered a must by most but is easily overcome by guiding.

Convenient Alignment
A standard “park” position available on just about all controllers these days

Superior Stability
Ah this is what is needed for a big payload and is the real selling point

45kg Payload Capacity!
Great should satisfactorily carry a 14” OTA

I think we will need to wait for its release to find out what it will really do.

Barry
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