Manufacturer: -TS Zubehör
Product number: RPA25

EUR 369,00


incl. 19 % VAT (DE)  
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excl. 7.95 € shipping costs (DE)  
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rating: 5.0 of 5
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Since years, Teleskop-Service has looked for an alternative to high end focusers for an affordable price. Now we can offer a very good high end focuser for an incredible price.


The Rack and Pinion drive system:

A simple Crayford focuser works by pressure. The load on the drive shaft puts pressure on the ball bearings and reduces the operational smoothness. Our RPA focuser is operated by a rack-and-pinion system and has no ball bearings: this has the advantage of separated driving and bearing sections. Even under heavy load, it can be operated smoothly with fine movements.

The locking mechanism has been improved, too. No simple screw puts pressure on the drawtube but the position of the drive system is being fixed. So the focus position is maintained perfectly.

Adjustment: Even this construction can become misaligned over time. To help you adjust it correctly again, TS has created a PDF guide that you can download here.


Self centering 2" and 1.25" reducers
As simple locking screws don´t allow friction locking, a force-fit connection holds the 2 and 1.25" reducers. By the same way, they always are perfectly centered.
Free aperture:2.5"
Minimal length without 1.25" reducer:94 mm
Travel:92 mm
Outer diameter of the drawtube:70 mm (internal diameter approx. 62 mm)
Telescope side connection:M90x1 male thread with 360° rotation
Length of the M90 thread:4 mm
Dual-speed transmission:yes
Camera side connections:M68x1 female thread, 2" 1.25"
Maximum payload:approx. 5 kg
Weight:1.3 kg
RPA PHOTOLINE 2.5" focuser
Threaded telescope adapter with 360° rotation
Self-centering M68, 2" and 1.25" reducer

Manufacturer / Importeur:Teleskop-Service Ransburg GmbH
Street:Von-Myra-Str. 8
ZIP / City:85599 Parsdorf
Country:Germany
Telefon number:+49 89 99228750
Email:info@teleskop-service.de
Website:www.teleskop-express.de
Safety informations: PDF Download


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Reviews

Written by jozef rexa
on 2023-03-09

"accurate and precise"

Written by Stefan Reichmann
on 2017-09-13

"Der perfekte Auszug für meinen 80 mm APO. Verkippungen wie vorher am Crayford wären erwartungsgemäß verschwunden, ein Motorfokus ließ sich in ein paar Minuten adaptieren. Solide Verarbeitung und präzises Händling. Der Auszug ist jeden Euro wert!"

Written by Rolf Braun
on 2016-06-05

"präzise und sehr gute Verarbeitung."