TS-Optics 3" rack and pinion focuser for up to 6kg payload - M117 connection thread
The TS 3-inch rack and pinion focuser is ideal for astrophotography. Fits directly to TS Optics or Astro Tech RC telescopes with a 10" aperture.
♦ The TS 3" rack and pinion focuser has the connection thread M117x1 on the telescope side. Therefore it fits directly on Ritchey Chretien telescopes with the M117 connection. All common correctors can be connected to the telescope side. chamber through intermediate threads.
♦ 45mm adjustment range for telescopes that are less than 88mm in diameter on the extension side, such as many Schmidt-Cassegrain telescopes
♦ Storage without changes and sensitive adjustment even under maximum load
♦ Storage and adjustment are separated from each other
♦ Adjustment by helical gear
♦ 1:10 micro reduction for sensitive focus in astrophotography
♦ Connection thread M68x1, M78 (internal) and connection thread M74x1 (external) and 2" or 1.25" reduction
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 top of the line focuser at a top class price that will also meet demanding astrophotographic tasks. The focuser is ideal for retrofitting existing telescopes, such as APO or RC refractor telescopes. But self-builders also like to use this extract.
The connection or adaptation to the telescope
The TS 3" R&P focuser is supplied with a connection adapter that has an internal thread M117x1. The adapter allows 360° rotation. So you only need a transition adapter to the internal thread M117.
The focuser fits e.g. directly on TS / GSO / Astro Tech RC astrographs from a 10" aperture.
If you remove the plug adapter, there is a plug connection with a diameter of 105 mm for individual adaptations.
The advantage: storage of the extension tube and adjustment are decoupled:
The draw tube is precision mounted. Unlike Crayford ball-bearing focusers, the focuser tube does not yield even under maximum load. Extension tube adjustment is achieved through a worm gear.
On the one hand, the advantage is 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:
| Connecting thread - camera side: | M78x1 female, M74x1 male, M68x1 female |
| Connection barrel: | 2" and 1 1/4" with adapter |
| Connection to telescope: | 105 mm plug connection, with rotation adapter M117x1 female thread |
| Shortest overall length: | 81 mm from M117 threaded connection to M78 internal thread / 91 mm to M68x1 internal or M74x1 external thread / 110 mm to 2" receptacle |
| Lengh of the 2" adaptor: | 18 mm |
| Focus travel: | 45 mm |
| Shaft for motor focus: | 34 mm diameter |
| Reduction: | Micro transmission |
| Payload: | 6 kg |
| Weight: | 1.64 kg incl. rotating adapter |
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