Deutsche Version
Each manufacturer of astronomical equipment prefers its own special adaptors.
This summary is far from being complete (and correct)!
| Eyepieces | Filter Thread |
| Eyepieces 1-1/4 Inch (31,8 mm) |
M 28,5 x 0,50 mm or
M 28,5 x 0,60 mm or 1-1/8 Inch x 40 TPI |
| Eyepieces 2 Inch (50,8 mm) |
M 48 x 0,75 mm or
M 48 x 0,60 mm |
|
Lichtenknecker (Eyepieces 31,0 mm) |
M 29,5 x 0,50 mm |
|
Lichtenknecker (System 64) |
M 59 x 0,75 mm |
| Pentax XW - Frontside Camera Adaptor | M 43 x 0,75 mm |
|
Note: There is no agreement among the manufacturers of eypieces to use a common standard for filter threads. |
| Telescopes | Adaptor at Focuser |
|
Celestron/Meade 8 Inch SCs
Intes Micro 715 |
2 Inch, 24 TPI |
| Celestron C11/C14 | 3,3 Inch, 16 TPI |
| Meade LX200 16 Inch SC | 4 Inch, 16 TPI |
| Meade ETX 90/105/125 | M 35 x 1mm |
| Vixen/Lichtenknecker | M 36,4 x 1mm |
|
Russian Telephoto Lens MTO 11-CA |
M 42 x 1mm |
| Vixen | M 43 x 1mm |
| Zeiss | M 44 x 1mm |
| Synta Refractors (Bresser, Skywatcher, Konus et. al.) | M 56 x 1mm |
| Vixen / GSO 2”- Focuser | M 60 x 0,75mm |
| Zeiss | M 68 x 1mm |
| Focusers | |
|
Astrophysics Traveler 2,7" Focuser |
to Telescope:
109,35mm x 24 TPI to Adaptor: 69,50mm x 24 TPI |
|
Starlight Instruments 3,5" Feathertouch Focuser |
to Telescope:
123,75mm x 24 Tpi to Adaptor: 104,1mm x 24 Tpi |
| Webcams | |
| e.g. Philips ToU-Cam | M 12 x 0,5 mm |
| Photo Adaptors | |
| Praktica, MTO 11-CA | M 42 x 1 mm |
|
T2-Mount, T-mount (T = Tamron) |
M 42 x 0,75 mm |
| C-Mount (Video-Surveillance-Cameras) |
1 Inch x 32 TPI;
approx. M 25,5 x 0,75 mm |
|
Lenses for Enlargers, Leica-Thread |
39mm x 26 TPI Whitworth *) |
| Filters for Photography | usually a Pitch of 0,5 and 0,75 mm, depends on Diameter **) |
| Series 7 (e.g. Fisheye-Converter) | M 54 x 0,75mm |
|
*) Source: Support at www.leica-camera.com **) A very good table is provided at Schneider-Kreuznach (german only). |
| Tripods | |
| Tripod Thread for SLRs |
1/4 Inch 20 TPI;
(6,36 mm outside Dia., 5,1 mm Drill) DIN 4503/ISO1222 |
| Tripod Thread for Medium Format Cameras |
3/8 Inch 16 TPI
(9,55 mm outside Dia., 7,9 mm Drill) DIN 4503/ISO1222 |
| Key: | |
| M | Metric Thread, Angle of Thread: 60 Degrees |
| W | Inch Thread, Angle of Thread: 55 Degrees |
| UNC | Inch Thread, Angle of Thread: 60 Degrees |
| TPI | Threads per Inch |
| Counterweight Rod | Diameter |
| Vixen GP/SP/DX | 20 mm |
| EQ-1 / EQ-2 | 12 mm |
| EQ-4 / EQ-5 | 20 mm |
| EQ-6 / HEQ-5 | 18 mm |
| Lidl-Montierung (Astro-3) | 14,8 mm |
| OTE 150 | 20 mm |
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