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Example of CGEM tracking/guiding capabilities.  2+4 sky alignment.  "Display Align" showed -3 degrees off in Azm and + 30 min off in Alt.  A single attempt at All-Star Polar alignment using a star near the meridian/celestial equator intersection, resulted in excellent guiding. 
Hypertuned CGEM, Starlight OAG w/ AO and Lodestar on FSQ-85 @ f/5.3
NOTE the Y-Axis scale(0.5 pixels per div) and RMS(0.08/0.1  RA/DEC). 
(also shows quick V-curve and gotofocus using scopefocus autofocus software)

 


Older similar example:
20 min. sub, Pre-hyertuned, PHD guiding w/ SSAG on modified finderscope.
20 minute exposure




FSQ-85 and TSA-120 on a CGEM with servo driven EL Flat panels.  
 
FSQ-85 w/ QHY8 & TSA-120 w/ ST-8300m, Home Modified filterwheel, OAG, Lodestar and Reducer
 

New geared stepper - nema 17 w/ 71:1 planetary gear box







 
Motor mounted to FSQ-85, uses Robofocus plate and coupling
 
Motor mount on TSA-120
 
 
Flexible Coupling
 
 
Mount under finder bracket
 
 
 
 
 
 
 
 
 
 
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