The Borg eyepiece projection adapter (part
number 7395) is the only existing commercial
solution for doing eyepiece (positive)
projection or afocal photography using 2"
eyepieces with 35mm film, or digital still and
video cameras. Solid construction complements a
design that does not place the weight of the
camera on the eyepiece itself.
An internal diameter of 75mm and an adjustable
internal length (48-74mm) accomodates a
wide variety of 2" eyepieces which allows
for low power views as well as a reduced
possibility of vignetting as when using smaller
eyepieces. External overall length of SD-2X
ranges from 103 to 129 mm.
The ability to hold 2" eyepieces also allows the use
of Borg's in-line erecting prism
(part #4801),
which corrects the inverted image and
makes terrestrial photography simpler.
For exceptionally long 1-1/4"eyepieces, the
back end of the
eyepiece projection adapter may also be extended
by using one or more of the Borg adapters:
- 7506
- 10 mm extension
- 7508
- 20 mm extension
- 7505
- 40 mm extension
- 7509
- 60 mm extension
For exceptionally long/large 2" and 1-1/4" eyepieces,
extension adapter
7398 must
be used.
The eyepiece holder incorporates two setscrews
to assure a firm grip on the eyepiece. Built-in
rotation capability for the camera allows for
versatile composition of shots. Three screws in
the rotator allow for easy access to the
eyepiece compartment for quick eyepiece
changes.
All scope coupling
and camera coupling
parts are interchangeable with the smaller SD-1X
eyepiece projection adapter.
