Telescope-Service: Focusers

Telescope-Service - Your Expert for Telescopes, Mounts, Binoculars, Spotting Scopes and Accessories. We offer a broad selection of eyepieces, filters, accessories for astro-imaging and many more interesting items.

Focusers
1.25" and 2" Focusers for Newtonian Telescopes, Refractors and Schmidt-Cassegrains

A focuser is one of the most important parts of any telescope. With a bad focuser no telescope (no matter how good its optics) will be able to show sharp images. Focusing must be very smooth. The focusers must not shift much (regular use) or not at all (photographical use), else the performance of the telescope as a whole is compromised.

Easy Payment: We offer our customers several easy and fast payment methods. You will receive exact payment details when ordering or on request!

$Crayford focuser for refractors$
2" Crayford Focuser for Refractors Also available with 1:10 Microfocuser	TS Crayford Newtonian Focuser 2" TOP Price	TS Crayford Newtonian Focuser 2" with 1:10 Dual Speed Microfocuser

Schmidt-Cassegrain Focuser 2" Crayford Type - with or without 1:10 microfocuser

BAADER SteelTrack ST Focusers Extremely fine quality Crayford focusers with excellent characteristics. Very high load capacity. Ultra-smooth focus motion. Including 1:10 microfocuser.
	$steeltrack refractor focuser$
Baader Steeltrack 2" Newtonian Adaptations for several existing Newtonians are available.	Baader Steeltrack 2" Refractor Adaptations for several existing Refractors are available.	Baader Steeltrack 2" SCT With adaptation for the 2" SC thread as well as the large Meade and Celestron thread.

Baader Steeltrack 3" Refractor Top model for zero-vignetting astro-imaging or other demanding applications.

Other Brands (separate pages)
		$William Optics focuser for Synta refractors$
Orion Motorfocus With hand paddle - for many telescopes	Microfocuser 1.25" or T2 connection. Non-rotating!	William Optics 1:10 Synta Focuser fits most Synta refractors

Please send requests or online orders to: sales@telescope-service.com

2" Crayford Focuser For Refractors
Also Available With 1:10 Dual Speed Microfocuser

$TS Optics 2" Crayford focuser for refractors$

TS 2" Crayford focuser. Both 2" and 1.25" accessories are firmly clamped with a brass compression ring. The 2" on 1.25" adaptor has an integrated 2" filter thread. It is included in the scope of delivery.
The image shows the variant with 1:10 dual speed microfocuser.

$TS refractor crayford focuser - side view$
TS Crayford focuser with dual speed microfocuser

High Quality Crayford Focusers for Refractors

This focuser offers a very smooth focus motion and zero image shift due to the Crayford design with roller bearings. It fits many different telescopes, for example Celestron, Skywatcher, Helios, GSO, ... 80mm and 90mm refractors.

Of course the focuser is also ideally suited for ATM purposes.

Specifications and Dimensions:
- 86mm flange diameter (fits tube inside diameters of 86mm). The focuser is fixed to the telescope with three M4 threads that sit radially in this flange.

- 72mm focus travel

- length from end of telescope tube to end of 2" clamp with focuser fully retracted: 92mm
(10mm more with 1.25" adaptor installed)

- length from end of telescope tube to end of 2" clamp with focuser fully extended: 164mm
(10mm more with 1.25" adaptor installed)

- Weight: 720g with 1.25" adaptor (small variance allowing for the 1:10 microfocuser)

- brass compression clamp for 2" and 1.25" accessories

Two Variants:

We offer two variants of this focuser.

The standard variant already offers a very smooth focus motion and zero image shift.

The deluxe version has a dual speed 1:10 microfocusing knob installed on one side for even smoother focus motion. It is particularly recommended for photographical applications and for additional observing comfort for visual use.

Item No.	Short description	Price - Euros incl. VAT
TS FOC RC 2	2" Crayford focuser for refractors. Including adaptor for 1.25" accessories.	89.-
TS FOC RC 1:10	2" Crayford focuser for refractors, with 1:10 dual speed microfocusing knob on one side. Including adaptor for 1.25" accessories.	148.-

Please send requests or online orders to: sales@telescope-service.com

2" Crayford Focuser For Synta Refractors
(Sold. Now replaced by the Baader Steeltrack Focuser .)

$Crayford focuser on a Synta refractor - before and after$

Please send requests or online orders to: sales@telescope-service.com

TS 2" Crayford Focuser for Newtonian Telescopes

TS Optics 2" Newtonian Crayford focuser - standard model

The TS Crayford focuser for Newtonian telescopes was designed to offer many improvements over other existing, similar looking focusers.

Advantages of the Crayford Design:
- ultra-smooth
- finely adjustable
- absolutely zero image shift

Improvements of our TS Crayford focuser over similar focusers:
- more focus travel - 40mm instead of under 30mm. This alone solves many focus problems
- friction adjustment is achieved with a thumbscrew, not a slug screw that can only be operated with tools.

Specifications:

Weight:	approx. 450 grams
Min. Height above tube:	73mm from base to top of 2" drawtube - extra height with 1.25" adaptor: 10mm
Focus Travel:	40mm - more than in other, similar looking Crayford focusers
Base	Radius approx. 165mm. The focuser can of course also be attached to larger tubes, but there will be a small gap between the base radius and the tube. The base is attached with four screws. Position of the four holes: 70mm x 72mm (parallel to tube axis x radial) This focuser will directly fit onto your existing GSO, ICS-Galaxy, Hardin Optical Dobsonian as well as older Orion Skyquest Dobsonians. You can turn the focuser to bring the two focusing knobs into a comfortable position easily - for instance 45 degrees in a Dobsonian telescope. Just loosen the two slug screws in the base, turn the focuser and tighten the slugs again.
Features	2" brass compression ring, adaptor from 2" to 1.25" with brass compression ring and 2" filter thread. The friction can be adjusted with a large thumbscrew. A second thumbscrew can lock the focuser tightly in position.

Locking Screw and Friction Adjustment:

When we compared our focuser with other, much more expensive focuser we were surprised by how smooth the focuser moves. Also, the friction adjustment turns out to be much easier since our focuser utilises a thumbscrew instead of a slug.

There are two large thumbscrews (see big image above). The upper thumbscrew locks the focuser - you can use very heavy accessories without fear of losing focus.
The lower thumbscrew regulates the tension of the focuser - at the easiest setting the focuser moves ultra-smooth like no other focuser we have seen so far. At tighter settings you can use heavy accessories without sacrificing much of the incredible smoothness of motion.

Customer Feedback
"I write regarding my recent purchase of a Crayford Focuser. It arrived very promptly and I am very impressed with its quality. I have not used it yet for astronomy (I am currently re-engineering a 10" Dobsonian into an equatorially mounted telescope for astrophotography), but I have no doubt that it will suit my requirements. I have two JMI Crayfords and have also used an Astrosystems Crayford recently. I believe yours is superior to all of these in build quality." - Paul

Item No.	Short description	Price - Euro incl. VAT
TS FOC NC 2	2" Crayford focuser for Newtonian telescopes. Incl. 1.25" adaptor with 2" filter thread	79.-
TSV 235	2" extension tube with an optical length of 35mm - with brass compression ring	25.-

Please send requests or online orders to: sales@telescope-service.com

TS 1:10 2" Crayford Focuser for Newtonian Telescopes

A full 360° turn with the 1:10 microfocusing knob means a movement of only 1.4mm!

This way ultra-precise focus motion is possible for both visual and particularly photographical applications.

Our Practice-Proven Newtonian Crayford Focuser - Now With Dual Speed 1:10 Microfocuser!

The focuser is the most "visible" part of any telescope with the exception of the optics themselves. You touch the focuser all the time, the focuser is responsible for holding your eyepieces or camera in position and moving them precisely into focus in the first place.

Bearing all this in mind we created an upgraded version of the TS Newtonian Crayford focuser. The upgrade consists of a 1:10 dual speed micro-focusing knob for even smoother focus motion.

- load capacity up to 3kgs (recommended without reservations up to 2kgs)
- ultra-smooth focus motion with 1:10 microfocus knob
- constant movement
- 2" compression ring
- 2" on 1.25" adaptor with compression ring and 2" filter thread

Applications:
The 1:10 microfocuser is not in the way. You can just as well use the regular coarse focus knob on both sides of the focuser. By turning the smaller black focus knob you then can use the 1:10 fine focus motion for enhanced focusing precision.

Aside from this feature the same specifications apply as with the regular version of the Newtonian Crayford focuser.

Price:

Item No. Short description Price - Euros incl. VAT

TS FOC NC 1:10 2" Crayford focuser for Newtonian telescopes. With 2" on 1.25" adaptor. Including 1:10 dual speed microfocuser 148.-

Please send requests or online orders to: sales@telescope-service.com

Schmidt Cassegrain Crayford Focuser 1:10
TS Optics 1:10 Micro Crayford focuser for SCTs
Image: SCT focuser with 1:10 microfocuser

Schmidt Cassegrain Focuser 2" with 1.25" Adaptor

Many users consider the primary mirror focusing mechanism of Schmidt-Cassegrain Telescopes cumbersome to use. There is some amount of image shift and focus cannot be found easily. This is inconvenient for visual use and a serious problem for astrophotography.

Our SCT focuser solves this problem. With its Crayford focuser design it has practically zero image shift and a very smooth focus motion.

Both 2" and 1.25" accessories are clamped with a brass compression ring to avoid scratches.

Minimum length of the focuser is approximately 85mm, focus range is about 40mm (more than in conventional SCT focusers).

1:10 Microfocuser: The Schmidt-Cassegrain focuser has dual-speed knobs. With the coarse adjustment you obtain a quick movement of the focuser. With the microfocusing knob you can effect extremely small movements for optimal focusing precision.

Item No.	Short description	Price - Euros incl. VAT
SC FOC 1:10	SCT-Focuser 2" with 1.25" adaptor with 1:10 microfocuser	158.-
B 2408155	Adaptor 2" on SC-thread. Allows you to use Schmidt-Cassegrain accessories at the rear end of the focuser	25.-

Please send requests or online orders to: sales@telescope-service.com

BAADER Steeltrack 2" Focuser for Newtonians
Low Profile - With 1:10 dual speed microfocuser
Baader Steeltrack Newtonian Focuser - side view
Baader 2" Newtonian focuser with standard universal base

Baader 3" steeltrack with finder bracket

Sample image: Baader 3" refractor focuser

Baader High Quality Focusers - Top Craftsmanship, Top Value For Money

- Crayford focusers with stainless steel running rails for the roller bearings
- Stainless steel running rail for the focusing spindle
=> All contact points between drawtube and focusing mechanism are stainless steel. This results in a much higher load capacity and smoother focusing motion. This also offers a longer lifespan of the entire focuser assembly.
- Locking screw with anti-scratch tip
- 1:10 professional grade microfocuser with all stainless steel mechanism
- drawtube is carefully blackened inside and has anti reflection ridges
- the 2" eyepiece clamp uses a compression ring for secure and scratch-free grip of the eyepiece
- The main axis of the focuser can be adjusted to offer a perfectly focused photographical field from one edge to the other.
- Can be upgraded with a motorfocuser (coming soon)

Steeltrack NT with 1.25" Pushfix adapter

Newtonian focuser with universal base and with optional 1.25" adapter
side view of the Baader Newtonian steeltrack focuser

Only 50mm focuser height

2" Newtonian Focuser - Further Specifications

- focus travel: 30mm
- minimum height above the tube: 50mm
- universal adapter plate for various telescope diameters included
- 2" eyepiece clamp with compression ring and cutout for the low-profile 2"-1.25" adapter. The locking screw of the adapter sinks into this cutout and therefore doesn't add to the optical length of the focuser. The entire 2"-1.25" adaptation consumes only 1mm!

Prices:

Item No.	Short Description	Price - Euros incl. VAT
BA ST N2	Baader Steeltrack Newtonian focuser with universal base	225.-
BA Basis	Base modification for the Steeltrack focuser to attach it to a GSO Newtonian. Please specify the tube diameter when ordering! Fits also various other telescopes (ICS, Meade, ...). Please request further information! Only available with the focuser. Cannot be refitted later!	20.-

Baader Push Fix adapter from 2" to 1.25". Zero optical length.

Pushfix 2"-1.25" Adapter

The Baader Pushfix 2"-1.25" adapter is used to adapt the Baader Steeltrack Newtonian focuser to accept 1.25" eyepieces. Unlike conventional adapters the Pushfix consumes no optical length. In addition to this the adapter has a very ingenious locking mechanism:
- the standard locking mechanism is a conventional compression ring that holds eyepieces securely in place.
- an additional slug screw pushes onto the locking ring for a permanent lock.
- three delrin slug screws can be used to automatically fix an eyepiece in position without having to operate a separate locking screw ("Push-Fix system"). The setting of the screws is user-adjustable.

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA 2408151	Baader Push Fix 2"-1.25" adapter	28.-

Please send requests or online orders to: sales@telescope-service.com

BAADER Steeltrack 2" Focuser for Refractors
With 1:10 dual speed microfocuser
$Baader Steeltrack focuser for refractors$
Baader 2" Refractor focuser with adaptation for a Celeston Onyx refractor

$Baader Steeltrack focuser mounted on a Celestron refractor$
Baader Steel Track 2" refractor focuser with optional adaptation to a Celestron refractor. This image does not depict the official scope of delivery!

$Baader refractor steeltrack focuser - thumbnail$
Baader Steeltrack refractor focuser 2" with 1.25" adapter
$refractor Steeltrack focuser - side view$
side view

2" Refractor Focuser - Further Specifications

- focus travel: 81mm
- minimum length (without optional tube adaptation): 80mm
- 2" on 1.25" adapter with compression ring included
- telescope adaptation via dovetail. Inside diameter 72mm. Optional adaptors are available:
* Celestron, Sky-Watcher, ... 100mm and larger refractors, Skywatcher ED80, etc. (BA 295 7085)
* M68 x 1 and M80 x 1.5 thread fitting (also BA 295 7085)
* Celestron Onyx refractor with 77mm dovetail (BA 295 7086)

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA ST R2	Baader Steeltrack Refractor focuser with 72mm dovetail fitting	246.-

$Synta adapter for Steeltrack refractor focuser$
BA 2957085 adapter with 360° rotation
$Onyx adapter for Baader refractor Steeltrack$
BA 295 7086 adapter for Celestron Onyx

Telescope Adaptors

BA 295 7085 Universal Adaptor
This universal adaptor allows you to connect the Baader Steeltrack refractor focuser to various telescopes. The adaptation is compatible with many Celestron, Sky-Watcher, Helios, Bresser, ... refractors as well as with several Zeiss threads.

1) M90 female threaded collar with three elegant and ergonomic knobs for easier handling. Fits the M90 thread of the older Synfoc models.
2) M68 (Zeiss) male thread
3) M80 x 1.5 (Zeiss) thread
4) tube flange with 96mm diameter. Fits almost all telescopes with 100mm tube diameter.

BA 295 7086 Onyx Adaptor
Dovetail adapter for Celestron Onyx refractors.

Prices:

Item No.	Short Description	Price - Euros incl. VAT
BA 2957085	Universal adapter for Baader Steeltrack 2" refractor focuser. Adaptations as described above.	39.-
BA 2957086	Adapter to attach the Baader Steeltrack 2" refractor focuser to Celestron Onyx refractors.	19.-

Please send requests or online orders to: sales@telescope-service.com

BAADER Steeltrack 2" Focuser for Schmidt-Cassegrains
With 1:10 dual speed microfocuser
Baader Steeltrack focuser for SCT
Baader 2" Schmidt-Cassegrain focuser on a large Celestron Schmidt-Cassegrain

Sample image: Baader 3" refractor focuser

Baader Steeltrack Schmidt-Cassegrain focuser

SCT steeltrack mounted

Steeltrack attached to a Schmidt-Cassegrain - without vignetting

2"Refractor Focuser - Further Specifications

- focus travel: 30mm
- telescope adaptation via large 3.3" SC thread (fits Meade and Celestron) as well as the common 2" SCT thread.
* all Celestron and Meade Schmidt-Cassegrains, many Maksutov-Cassegrains
* 3.3" thread and 2" thread

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA ST SC	Baader Steeltrack Schmidt-Cassegrain focuser with large and small SC thread fitting	245.-

The universal SC adaptation is also available separately

Adaptation for all Celestron and Meade SCT threads - also available separately

The adaptor of the Baader Steeltrack SCT focuser has been specially designed to work with all common SCT threads. The most common SC thread is the UNC 2"-24 thread. Most Schmidt-Cassegrains either directly have this thread or have an adaptor to this thread.
Some larger SCTs use a larger thread. The thread is 3.3" in diameter.
The Baader adapter fits on both the smaller and the larger SC thread.

On the opposite end the adapter has an inside diameter of 77.5mm and several nylon slug screws. You can use the adapter also for attaching other focusers or completely different accessories to your Schmidt-Cassegrain.

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA 2957036	Universal adapter from 3.3" and 2" Schmidt-Cassegrain thread to 77.5mm inside diameter. Fits the Baader Steeltrack focuser.	25.-
BA 2957037	Adapter l adapter from 2" SCT thread to 3.3" SCT thread	20.-

Baader Push Fix adapter from 2" to 1.25". Zero optical length.

Item No.	Short Description	Price - Euros incl. VAT
BA 2408151	Baader Push Fix 2"-1.25" adapter	28.-

Please send requests or online orders to: sales@telescope-service.com

BAADER Steeltrack 3" Focuser for Refractors
With 1:10 dual speed microfocuser
Baader 3" Steeltrack with additional accessories
Shown here with optional adaptations and Baader Quick Release finder bracket.

Baader Steeltrack 3" focuser with 2" visual back
Baader 3" steeltrack telescope connection

large clear aperture on the telescope side: 3"

3" Refractor Focuser - Further Specifications

- focus travel: 110mm
- minimum length (without optional tube adaptation): 88mm
- includes M82-M68 adapter and Four-In-One M68-2" visual back with compression ring and additional M68 male thread.
- telescope adaptation via dovetail. Inside diameter 4" (102mm). Optional adaptors are available:
* adapter with M100 male thread (BA 2957105)
* adapter with M116 female thread
* 39mm extension tube and rotator

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA ST 3	Baader 3" Steeltrack focuser with 102mm dovetail fitting With M82, M68 and 2" adaptation.	345.-
TS 2-1	2" on 1.25" adapter with brass compression ring and with 2" filter thread	25.-

Important Parts For Telescope Adaptations

Focuser Extension 39mm and Focuser Rotator

This extension tube fits into the telescope end of the Steeltrack 3" focuser and has the same 4" dovetail at the other end. This dovetail is equipped with three thumbscrews that allow you to rotate the focuser.

The optional Baader finder quick release base (BA Sucherschuh) can be installed easily on the extension tube. This base accepts most common finder bracket, including Synta, Vixen, GSO and many Baader brackets.

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA 2957109	39mm extension tube for 3" Steeltrack focuser. Includes 360° rotating function.	50.-
BA Sucherschuh	Finder quick release base (BA 2457000). Accepts most Synta, Vixen, GSO and Baader finder brackets.	21.-

M100x1 Threaded Adapter and 103mm Adapter Flange

The adapter fits into the dovetail of the 3" Steeltrack focuser and has an M100x1 male thread. Includes a conversion nut to M100x1 female thread and 103mm flange diameter.

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA 2957105	M100x1 male, female and 103mm flange adaptor for Baader 3" Steeltrack focuser	40.-

M116x1 Threaded Adapter

The adapter fits into the dovetail of the 3" Steeltrack focuser and has an M116x1 female thread.

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA 2957106	M116x1 female thread adaptor for Baader 3" Steeltrack focuser	35.-

Important Parts For Eyepiece Adaptations

M60 threaded adapter for Baader Steeltrack 3" focuser

M60 Threaded Adapter

This adapter screws into the M68 female thread on the eyepiece side of the Steeltrack focuser. It has an M60 female thread that can be used to attach various Vixen and Skywatcher adaptations.

Price:

Item No.	Short Description	Price - Euros incl. VAT
BA 2957103	M68 male on M60 female threaded adapter for Baader 3" Steeltrack focuser	16.-

Baader Push Fix adapter from 2" to 1.25". Zero optical length.

Item No.	Short Description	Price - Euros incl. VAT
BA 2408151	Baader Push Fix 2"-1.25" adapter	28.-

Please send requests or online orders to: sales@telescope-service.com

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