These are two variants of the FC76, plus a conversion 'kit' to make your FS-60CB into a FC76!
FC-76DC complete ota FC-76DC conversion kit for FS-60CB
FS-60CB standard FS-60CB converted to FC-76DC
By simply unscrewing the objective of the FS-60CB and then screwing in the FC-76DC conversion kit, the job is done. You now have a wonderful f/7.7 instrument of nearly 600mm focal length. This is still a very lightweight portable instrument and can be used both visually and photographically, not only for astronomy but for wildlife photography using a standard photographic tripod as above.
FC-76DS large tube ota
The FC-76 refractors mark a re-introduction of a small long focal length instrument. For many years the benchmark for small instruments was the FS-78, which at f/8 was small and light enough for easy viewing from almost any location. The FC-76 models carry on that tradition, and the DC version can easily be mounted on a small tripod. Click on the pdf link below for the basic specifications, plus options of focal reducer, flattener and barlow extender.
Specifications of both FC-76DC and FC-76/DS
FC-76DC - user manual
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