Periodic error measurements
 

Unitron German equatorial for 60 mm refractor

Vixen GP-D German equatorial

NJP Takahashi German equatorial

Home-made fork mounting with "secteur lisse"

Astrophysics 1200 GTO 3
 



Unitron German equatorial mounting for 60 mm refractor :



Vixen GP-D german equatorial mounting :



Home_made fork mounting
with a 457mm diameter "secteur lisse" :



Takahashi NJP 160 German equatorial mounting
with MCMT Drive :


Astrophysics AP1200 without PEC :

Astrophysics AP1200 with PEC :

 

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