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.
Astroprints
Bracket for ZWO ASIAIR Plus and Mini on Vixen rails
$ 26.90
ADM
Prism rail adaptors for Celestron StarSense
$ 124.00
TS Optics
Vixen to Losmandy dovetail bar adapter
$ 73.00
Vixen
Mounting plate fork mounting
$ 173.00
iOptron
Tri-Pier adapter for Skywatcher, Celestron and Orion
RRP:
$ 156.00
Our price:
$ 141.00
iOptron
Tri-Pier adapter for Paramount MyT mount
$ 125.00
PegasusAstro
Saddle Powerbox adapter plate for AM5
$ 48.90
iOptron
Tri-Pier Adapter for Astro-Physics mount
$ 313.00
Losmandy
FHD / Meade field tripod adapter
$ 491.00
Software Bisque
Paramount ME Lightweight Wedge to Pier Adaptor Plate
$ 481.00
Rainbow Astro
AP Mach1 Adapter
$ 345.00
iOptron
Tri-Pier adapter for ZEQ25 and CEM25 mounts
RRP:
$ 209.00
Our price:
$ 194.00
iOptron
SkyGuider Pro Kit
$ 188.00
PegasusAstro
Saddle Powerbox adapter plate for EQ6-R / NEQ-6
$ 48.90
PegasusAstro
Saddle Powerbox adapter plate for RST135/RST300
$ 48.90
Lunatico
DuoScope Swivel 20mm
$ 231.00
Lunatico
Mounting saddle for 18mm DuoScope Swivel counterweight rod
$ 231.00
10 Micron
Adapter to mount 3" Clamps onto GM4000
$ 288.00
10 Micron
Adapter to mount 3" Clamps onto GM3000
$ 285.00
Geoptik
Tripod adapter for HEQ5 mount
$ 115.00
Geoptik
Prism clamp to Celestron AVX mount adapter
$ 135.00
ADM
Prism rail adaptors for TeleVue mounts
$ 124.00
Geoptik
Adapter for connecting the saddle plate to EQ6 mount
$ 62.00
Geoptik
Adapter for connecting to prism clamp on HEQ-5
$ 62.00
