– OPFA III – Connection on the telescope side: for screwing onto the 2″
Tube threads from all Celestron (and Meade) Schmidt-Cassegrain
reflecting telescopes
– Delivery WITHOUT projection eyepiece!
– For photography with digital and/or analogue SLR cameras
with detachable lens
– Consisting of basic version OPFA (individual parts see OPFA IV) as well as
telescope side with 16mm super short Celestron/Meade union nut
with 2″ internal thread (#2958500B)
Eyepiece projection adapter with SC adapter, variable.
Eyepiece projection adapters allow an extension of the effective
telescopic focal length. This has an SC connection and can be inserted in
change the length.
It is enough to image lunar craters and planets with high resolution
usually the focal length of the telescope is not enough, it has to be extended
will. The OPFA brings the eyepiece into the beam path and adjusts
also establishes the connection to the telescope and to the T2 ring of the camera.
The OPFA accepts eyepieces with a maximum housing diameter of
38mm on. Plössl eyepieces and orthoscopic eyepieces are particularly good
(according to Abbe) suitable. The usual focal length range is between
6mm and 15mm.
The OPFA system can be completely unscrewed. Push
simply place the eyepiece in the sliding focuser and fix it with it
the knurled screw. Then screw the two T2 sleeves back in
up and the OPFA is ready for use. On the
You can even fine-tune the shifting mechanism
achieve magnification.