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
$ 19.90
Omegon
Camera adaptor T2-Ring für Nikon
$ 19.90
William Optics
Camera adaptor T-Ring Nikon Z 48mm
$ 88.00
Omegon
T2 ring for Minolta AF and Sony A-Mount cameras
$ 29.90
William Optics
Camera adaptor M48 compatible with Canon EOS
$ 69.00
Baader
Camera adaptor T2/Fuji x-Mount & S52 Wide-T
$ 44.90
William Optics
M48 / Sony E Adaptors
$ 81.00
Bresser
Camera adaptor T2 ring compatible with Canon EOS R/RP Wide-T
$ 29.90
Celestron
Camera adaptor T2 ring for Canon EOS and ZenithStar 71/61 field flattener
$ 33.90
Baader
Camera adaptor T2/Nikon Z & S52 Wide-T
$ 39.90
Celestron
Camera adaptor T2 ring for Sony E
$ 45.90
Baader
Camera adaptor T2 ring compatible with Canon EOS R/RP Wide-T
$ 46.90
Explore Scientific
Camera adaptor M48 compatible with Canon EOS
$ 30.90
Bresser
Camera adaptor M48 compatible with Canon EOS R/RP
$ 29.90
Baader
Camera adaptor T2/Leica, Sigma, Panasonic-L & S52 Wide-T
$ 46.90
TS Optics
Camera adaptor M48/Canon EOS R & EOS RP
$ 46.90
TS Optics
Camera adaptor T2 ring for Sony E
$ 40.90
William Optics
Camera adaptor T-Ring Fuji FX 48mm
$ 81.00
Celestron
Camera adaptor T2-Ring for Canon EOS M
$ 45.90
TS Optics
Camera adaptor 2"/Canon EOS
$ 69.00
Explore Scientific
Camera adaptor M48 compatible with Nikon
RRP:
$ 29.90
Our price:
$ 23.90
TS Optics
Adaptors M48/Canon EOS EF
$ 47.90
TS Optics
Camera adaptor T2-Ring, Pentax K
$ 33.90
William Optics
M48 adaptors for Nikon Super high precision
$ 151.00
Celestron
Camera adaptor T2-Ring for Nikon
$ 33.90
TS Optics
Adaptors M48/Canon EOS EF
$ 46.90
Baader
Camera adaptor Canon EOS DSL blank ring T-2/M48
$ 81.00
Skywatcher
Adaptor Canon, M48x0.75
RRP:
$ 36.90
Our price:
$ 33.90
Novoflex
NEX/T2 T2-ring for Sony NEX/Alpha cameras with E-mount
$ 104.00
Novoflex
Camera adaptor FUX / T2, T2-ring for Fuji X-Mount
$ 104.00
William Optics
Camera adaptor Canon EOS R T-Mount M48
$ 93.00
Novoflex
MFT/T2, T2-ring for Micro Four Third cameras
$ 104.00
Artesky
Adaptors M54/Canon EOS
$ 40.90
William Optics
M48 adaptors for Canon EOS Super high precision
$ 151.00
William Optics
M46 adaptors for Canon EOS
$ 116.00
