TS Optics projection adapter with T2 thread for 1.25" eyepieces Extends the focal length of your telescope. Suitable for 1.25" eyepieces up to 38 mm outer diameter
To capture lunar craters and planets, the aperture ratio of the
telescope has to be raised to approx. f/20 - f/30. A probate means to
achieve this is eyepiece (afocal) projection. This adapter turns your
1.25" eyepiece into a powerful projection eyepiece.
Equipping the adapter
Consists of standard parts that can also be used for other purposes
All 1.25" eyepieces up to 38 mm O.D. can be used
Projection distance can be varied by using additional T2 spacers
Camera connection by the common T-thread (M42x0.75)
Compact and DSLR cameras can be used with suitable adapters
The OPAD´s heart is a base adapter with T-thread on both ends. The
eyepiece is installed here and is locked by two thumbscrews for perfect
centering on the optical axis. Then, screw the T2 spacers above the
eyepiece and you're ready to start!
Recommended eyepieces for projection
DSLR cameras with suitable T-ring
Compact digital cameras with fixed lens use an adapter to M54 filter
thread. From this filter thread, adapters to other filter threads are
The OPAD system consists of
DSLR camera bodies use eyepieces from approx. 6 through 15 mm. A good
Ortho, Plössl or moderate wide angle is best. Ultra wide angle eyepieces
are not recommended because of their distortions.
For compact cameras with fixed lens, we recommend eyepieces with large
eye lens and a focal length of approx. 20-25 mm. It should be brought as
close as possible to the camera's lens.
- T2 eyepiece holder with brass compression ring
40 mm T2 extension
20 mm T2 extension
All pieces can also be used individually and can be combined with T2 systems.
Projection adapter for 1.25" eyepieces
Extends the focal length of your telescope. Suitable for 1.25" eyepieces up to 38 mm outer diameter