M57 Crayford Focuser

BORG crayford focuser has M57-thread at the objective side. So it’s quite easy to be integrated it into Mini Borg(Series 60) systems.

9857M57 male at the objective side / 1.25″ and T-thread male at the camera side

Built-in rotator

1:10 fine focusing / 40mm focus travel

I start playing around with some configrations as follows

9857a 9857bIt’s very cute and compact. This allows to focus with 1.25″ diagonal.

Meanwhile following is prime focus imaging configuration including 7517, which has 1/4″-20 threaded hole at the bottom. This focuser is the perfect match with black color Mini BORGs. 


~ by tedishikawa on June 16, 2015.

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