Optics Accessories

Recommended Optics Accessories

C to 1 1/4″ Adapter

Most video cameras interface to the optics/lens via female threaded “C” socket on the camera housing.  You will need a C to 1 1/4″ adapter to connect the camera to the eyepiece holder of your scope (and most cameras do not include this adapter).  We recommend that you use a short version of this adapter to allow for adding an optional focal reducer.  At this time our only source of these adapter is Alan Smiley and he can be reached at ( al.smiley@gmail.com ).

Focal Reducer

Adding a focal reducer is not required but is almost always a good idea.  The focal reducer decreases the focal length of your scope and this provides two benefits.  The shorter focal length means a wider field of view with a given camera.  The wider field of view makes it easier to locate stars.  And the wider field of view increases the time required for a star to drift across the field of view when using the pre-point technique.  In addition, the reduced focal length almost always increases the sensitivity of your camera – sometimes enabling you to record stars a full magnitude fainter.  In past years Meade offered an f/3.3 focal reducer for SCT models.  However, they no longer sell this focal reducer.  At this time we recommend that you buy a 1 1/4″ 0.5x focal reducer.  At this time, the best source is Hunter (hunterwzh@hotmail.com ) via Ebay item#221987143219 : eBay ($25).  There are a variety of similar focal reducers available online (via Amazon and other sources) but many don’t work as will as this model from Hunter.  Note: some of these focal reducers from Hunter have occasionally arrived with the lens in the wrong orientation.  The concave end of the lens should point toward the stars.  If you need to switch the orientation, it is easy to unscrew the retaining ring with a toothpick.  For additional help, post a question to the Yahoo group.

M12 to C Adapter

The RunCam cameras need this adapter to mate into the standard C to 1.25″ adapter configuration.  This adapter is available for $8.99 from http://www.ebay.com/itm/like/111696334929?lpid=82&chn=ps&ul_noapp=true .  These items are shipped directly from China and may take up to 3 weeks to arrive.

Page history:

2016-Aug-15 : initial version
2017-Mar-28: updated.