The world of adapters is diverse and not easy to understand. This is due to the wide variety of thread and plug sizes that optics and accessories may have.
In astronomy, two plug sizes have become established, which are often indicated in the old unit inches ("):
- 1.25" corresponds to 31.8 millimetre
- 2" corresponds to 50.8 millimetres
Many eyepieces, but also cameras, have connectors in one of these two sizes, which can be inserted into the telescope’s focuser.
If a 1.25" connector is to be inserted in a focuser with a 2" connector, a 1.25"/2" adapter is required. This is an example of a reducer adapter: where a connection is reduced from a larger size to a smaller one. The reverse is called an extension adapter.
Another very important category of adapters is camera adapters. These are used to connect cameras to optics or to accessories. The T2 thread (M42x0.75), which enables a screw connection, is very well established for this purpose. Lighter cameras without many accessories can also be easily connected to the telescope via a socket.
For astrophotography it is important that the aperture is large enough to illuminate the sensor (no vignetting) and the optical length matches the focal point.
Omegon
Camera adaptor T2-Ring compatible with Canon EOS
$ 21.90
Omegon
2“ Extension tube, 35mm optical path
$ 29.90
Omegon
Adaptors T-2 to 1.25 nosepiece
$ 24.90
Omegon
1.25'', 30mm extension tube
$ 22.90
Omegon
2'' - 1.25'' Twist-lock adapter
$ 79.00
Omegon
2'' extension tube, 80mm optical path
$ 44.90
Omegon
2'' extension tube with 50mm optical path
$ 34.90
Omegon
Camera adaptor T2-Ring für Nikon
$ 21.90
Omegon
2'' adapters with reducer 1.25 ''
$ 24.90
Omegon
Syncfocus flip-mirror (for planetary cameras)
$ 59.00
Omegon
Camera adapter 1.25"
$ 24.90
Omegon
T2 to 1.25'' adapter
$ 29.90
Omegon
Adaptors Adapter of 2'' on T2, optical path only 3 mm
$ 29.90
Omegon
M43 / T2 T-adapter
$ 22.90
Omegon
2'' to 1.25" reducer adapter
$ 34.90
Omegon
Adapter T-Adaptors M54(m)/T2(m)
$ 24.90
Omegon
2'' Twist-lock adapter
$ 99.00
Omegon
M48/T2 adapter – short version
$ 16.90
Omegon
Nosepiece 2" ver 2 (M48 to 2")
$ 29.90
Omegon
40mm T2i/T2a T2 extension ring
$ 24.90
Omegon
Adaptors 1.25'', 30mm extension tube
$ 24.90
Omegon
adapter ring M48-T2 0mm
$ 24.90
Omegon
M48 Extension - 20mm
$ 23.90
Omegon
flip mirror
$ 99.00
Omegon
Adapter 2'' T2 Adaptors with 1.25'' Reducer
RRP:
$ 59.00
Our price:
$ 49.00
Omegon
2" extension tube
$ 19.90
Omegon
7.5 mm T2i/T2a T2 extension ring
$ 21.90
Omegon
2'' projection adapter with T2 connection
$ 99.00
Omegon
Cronus T2 Adapter
$ 24.90
Omegon
Extension tube Extender 30 mm T- thread
$ 29.90
Omegon
15mm T2i/T2a T2 extension ring
$ 21.90
Omegon
Finderscope to C mount adapter
$ 17.90
Omegon
SCT Adapter, ultrashort, T2 (male) / 2''
$ 29.90
Omegon
Adapter M48 male to T2-thead ring female
$ 24.90
Omegon
T-thread Extension and 2'' nosepiece 21mm
$ 24.90
