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autostar-ratio calculator

Use this calculator to find the Autostar Ratios to enter for (almost) any combination of Meade motors and suitable mounts.
This calculator will not work in Netscape browsers below version 6.0.

The patch generation is currently out of date and not usable.

The ratios provided are still accurate and may be useful.

Your Mount's Name  (10 characters max)
Type of motor
Type of mount
Worm-Gear  RA / Alt
Worm-Gear  Dec / Az
Encoder  Number of vanes
Gear Reduction  : 1
Motor Spur  teeth
Worm Spur  teeth
(set spur values as 1:1 for no Motor-to-Worm spur reduction)
RA / Alt Ratio (negative)
Dec / Az Ratio (negative)
RA PECfactor
Dec PECfactor
Mount Alignment Polar   Alt/Az
 version  
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