About this product
Part Number: TSFOCR25S
This is the short version of the TS 2.5" Rack and Pinion Focuser with a max payload capacity of 6kg and designed for fitting to the StellaLyra (and others manufactured by GSO) 6" and 8" Ritchey Chretien and Classical Cassegrain telescopes.
Telescope side connection - M90x1 female thread:
The TS 2.5" rack and pinion focuser is attached to the telescope via an M90x1 female thread adapter. 360° rotation is also included - with no tilting. The connection fits directly to the 6" and 8" StellaLyra Ritchey Chretien and Cassegrain telescopes.
Camera side/eyepiece side connection:
The TS 2.5" rack and pinion focuser has an M63x1 connection thread on the camera side. This allows direct screwing of corrector systems like the TS 2.5" full-frame flattener for refractors or StellaLyra Ritchey Chretien telescopes.
In addition, a 2" eyepiece adaptor is included (compression ring with three screws), and a 2" to 1.25" adaptor is also included.
This focuser does not use ballbearing supports, which can tilt. Instead, it uses a Teflon support, guaranteeing a complete lack of play when used with heavy loading. The draw tube's motion is separated, offering the best possible stability and smooth movement.
- Telescope Side Connection: M90x1
- Camera Side Connection: M63x1
- Eyepiece Adaptors: 2" and 1.25"
- Focus Travel: 95mm
- Focuser Drawtube Inner diameter: 62mm with anti-reflection internal thread
- Shortest distance from M90x1 female thread to 2" receptacle: 108 mm
- Shortest distance from M90x1 female thread to M63x1 connecting thread: 84 mm
- Focuser Drawtube Outer Diameter 69mm plus 3mm for the rack
- Dual Speed Reduction: 1:10
- Maximum Load Capacity: 6kg
What's in the box
- 2.5" Rack and Pinion Focuser
- M90 Telescope Side Connection Adapter with 360° rotation
- 2" eyepiece adapter with compression ring
- 2" to 1.25" eyepiece adapter with 2" filter thread
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