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

IOptron HAE29EC
 

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Unitron German equatorial mounting for 60 mm refractor :

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Vixen GP-D german equatorial mounting :

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

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Takahashi NJP 160 German equatorial mounting
with MCMT Drive :

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Astrophysics AP1200 without PEC :

Astrophysics AP1200 with PEC :

 

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