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
2'' - 1.25'' Twist-lock adapter
$ 79.00
Omegon
2'' Twist-lock adapter
$ 99.00
Artesky
Adapter Twist Lock 2" (Skywatcher Newton)
$ 117.00
Omegon
Adapter 2'' T2 Adaptors with 1.25'' Reducer
RRP:
$ 64.80
Our price:
$ 49.90
Omegon
2'' to 1.25" reducer adapter
$ 39.90
Omegon
2'' adapters with reducer 1.25 ''
$ 29.90
Baader
Adapter 2" M54 ClickLock clamp
$ 104.00
ASToptics
Easy-Grip Twist-Lock adapter (M42 to 1.25")
$ 82.00
Celestron
Adapter SCT Visual Back 1,25"
$ 41.90
Baader
Adapter S58/M54 Diamond Steeltrack
$ 41.90
Howie Glatter
Parallizer 2" to 1.25" reducer adapter
$ 236.00
Lunt Solar Systems
1.25" to 2"adapter for blocking filter
$ 57.00
ASToptics
67mm to M48 (2") adapter
$ 17.90
Explore Scientific
M48/T2 adapter
$ 23.90
TS Optics
Adapter for the attachment of 2'' at T2
$ 41.90
Pierro Astro
Adapter from big SC-thread (3.3") to standard SC-thread (2")
$ 70.00
Baader
Adapter M48 adaptor for Diamond Steeltrack BDS
$ 34.90
TS Optics
Adapter SC female thread to M48 male thread
$ 52.00
ASToptics
2" adapter for 55mm to M48
$ 17.90
TS Optics
Adapter Adaptors M48 / T2 6mm
$ 28.90
ASToptics
72mm to M48 adapter, 2"
$ 17.90
Artesky
Adapter Twist Lock 2" / 1.25"
$ 46.90
APM
2”/1.25” adapter
$ 47.90
Baader
Adapter 2" ClickLock SCL clamp (C11-C14) for large SC telescopes
$ 120.00
Baader
Adapter ClickLock M74/2"
$ 132.00
TS Optics
Adapter Adaptors M82/M68
$ 87.00
TS Optics
Adapter M68/M54
$ 71.00
Baader
Adapter ClickLock Clamp M68x0.75 (Hexafoc) / 2"
$ 117.00
Skywatcher
Adapter Twist Lock 2"/1,25"
$ 36.90
TS Optics
Riccardi connection adapter for M68 and M63 to M48
$ 68.00
Baader
Adapter 2" ClickLock clamp M48
$ 112.00
ASToptics
Easy Grip Twist-Lock adapter (M48 to 1.25")
$ 82.00
PegasusAstro
Adapter M72 Male (Takahashi thread) to M54 Male
$ 58.00
TS Optics
65mm to M48 female thread adapter
$ 95.00
TS Optics
Adapter Adaptors M68/M48
$ 54.00
