71FL F3.9

This is one example for 71FLF3.9(series 80) and guider setup.

Advantages for Series 80 are to allow to set a guider at the top and use Feather Touch focuser if needed.  (This setup uses helical focuser though) Since a main tube is just 100mm long (2 x 7050), it was a bit challenging for each ring’s location and separation.  A focuser is directly attached with main tube.  I will take many summer objects with this gear. Triplet super reducer is expected to be coming up end of this summer.




~ by tedishikawa on May 27, 2011.

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