TS-Optics 2.5" rack and pinion focuser - accessories up to 6 kg - adjustment range 95 mm
The alternative to the Starlight Feather Touch FTF 3525 refractor focuser
♦ For Refractor, RC and Cassegrain telescopes - up to 6 kg payload
♦ Includes telescopic connection (M90 internal thread) and 360° rotation
♦ Eyepiece side M63 thread connection with 2" and 1.25" adapter
♦ Adjustment range 95 mm - perfect for refracting telescopes
TS-Optics 2.5" rack and pinion focuser - accessories up to 6 kg - adjustment range 95 mm
Teleskop-Service has been supplying and producing telescopes for amateur astronomers and astrophotographers for years. Our goal is to provide these telescopes with first class focusers at a reasonable price.
We are pleased to be able to offer you a high-end focuser that will also meet demanding astrophotographic tasks at a first-class price.
Telescope side connection - Internal thread M90x1:
The 2.5" TS rack and pinion focuser attaches to the telescope via an M90x1 internal thread adapter. 360° rotation is also included, guaranteed without tilt. Connection fits directly to GSO and AstroTec RC astrographs .But please note Please note that the free opening on the extension side of your telescope should be at least 74mm This is the diameter of the extension tube with the rack For smaller RCs we have the TSFOCR25S which it has a shorter extension tube.
There is also an 81mm plug-in connection for self-building.
We also offer individual adaptations to your telescope, just ask.
Camera side / eyepiece side connection:
The TS 2.5" rack and pinion focuser has an M63x1 connection thread on the camera side. Corrector systems such as the TS 2.5" full frame flattener for refractors or the Riccardi M63 reducer for RC refractors and telescopes They can be screwed directly with it.
In addition, of course, the scope of supply includes a reduction to 2" (ring clamp with 3 screws) and a reduction from 2" to 1.25".
The advantage: storage of the extension tube and adjustment are decoupled:
The draw tube is precision mounted on Teflon. Unlike Crayford ball-bearing focusers, the focuser tube does not yield even under maximum load. Extension tube adjustment is achieved through a worm gear.
The advantage is, on the one hand, a very sensitive fit even under maximum load, combined with the best possible grip. Even heavy cameras hold up well and field sharpness is maintained.
Especificaciones:
| Connection on telescope side: | 81 mm push-in connector and M90x1 female thread (12 mm deep) with 360° rotation |
| Camera side connection thread: | M63x1 mm internal thread |
| Eyepiece side connections: | 2" and 1.25" with compression ring |
| Shortest overall length: | 85 mm from M90 thread connection to M63 internal thread / 103 mm to 2" connection |
| Position of the extension tube at innermost focus position: | 81.5 mm behind the M90 connection thread |
| Focusing range: | 95 mm |
| Free inner diameter: | 62 mm with anti-reflex thread |
| Outer diameter of the draw tube: | 69 mm + 3 mm for the rack |
| Dual-speed Reduction ratio: | 1/10 micro-reduction |
| Load capacity: | up to 6 kg |
| Weight with rotation adapter: | 1240 g (43.5 oz.) |
English GB
Español