Home /
2" BDS-SC Baader Diamond Steeltrack® Focuser

2" BDS-SC Baader Diamond Steeltrack® Focuser

More Views

Application Images

Images uploaded by Customers

See all reviews for more images

2" BDS-SC Baader Diamond Steeltrack® Focuser

# 2957220

€ 365.00 Price excl. German VAT tax (19%): € 306.72

Out of Stock

4 Review(s) | Add Your Review

Please notify me when this product is (back) in stock

Baader Diamond Steeltrack® (BDS-SC) for Schmidt-Cassegrains (EdgeHD) with 30 mm focus travel
Minimum height (as supplied – incl. 2" clamp): 93 mm
Minimum height (with optional S58 to M68 / M68i / M48 / T-2 direct-adapter): 82 mm
Minimum height (with optional S58 ClickLock clamp): 112 mm
Focuser weight (as supplied – incl. 2" Klemme): 1.040 g (36.7 oz)
Includes 2" and 3.3" adapter to fit all C14/C11/C9¼/C8/C6/ OTA’s

Product Questions and Answers

Do you have a question about this product? Then we would like to ask you to first look through the existing questions and answers, most likely your question has already been answered and you will get the desired information much faster this way. Your question is not listed? Then please click on the button "Ask a question".

Hi, I would like to know if the 2" BDS-SC Baader Diamond Steeltrack® Focuser fits to my NexStar SE SCT 6".Best Regards Fermín

Question by: FERMIN GOMEZ on Feb 3, 2019 12:35:00 AM | 1 Answer(s)

Rating of Question

Am i right in thinking, to rotate the entire focuser housing after installation to align with the OTA, its the 6 black flat head screws that loosen to allow this to be achieved ?

Question by: Nigel Arnold on May 1, 2021 7:01:00 PM | 1 Answer(s)

Rating of Question

Please, will this Crayford fit Sky-Watcher Skymax 150 Maksutov?

Question by: Daniel Vojtisek on Mar 24, 2022 2:08:00 PM | 1 Answer(s)

Rating of Question

I would like to know if the 2" BDS-SC Baader Diamond Steeltrack fits to my Celestron Nexstar 5SE ?

Question by: Philippe RIGAL on Jul 27, 2021 5:55:00 PM | 1 Answer(s)

Rating of Question

Please, where in this focuser should my f/6.3 Celestron focal reducer (CFR) go? Currently, my imaging train would be:
C11 --- (¿CFR?) --- BDS-SC --- (¿CRF?) --- ASI174

Thanks,
Martin.

Question by: Martin on May 25, 2017 10:41:00 AM | 1 Answer(s)

Rating of Question

I need to use this focuser on a telescope with a very short backfocus. The scope has a 2"-24 (SC) male thread.
I see that this focuser has a min. height of 93mm but it is mentioned that this S58 adapter can be used to reduce the height to 80mm: https://www.baader-planetarium.com/en/baader-2%22-clicklock-eyepiece-clamps.html#574=936

My question is: can the focuser with the S58 adapter can fit on the 2"-24 (SC) male thread?

Question by: Cristian Mitran on Mar 4, 2022 11:47:00 AM | 1 Answer(s)

Rating of Question

Hi, I can used it for mak 150?

Question by: jose francisco on Nov 1, 2021 9:52:00 AM | 1 Answer(s)

Rating of Question

will this fit on a GSO RC8?

Thanks

Matt

Question by: Matt on Jan 10, 2021 7:09:00 AM | 1 Answer(s)

Rating of Question

Hi. Can your BDS-SC focuser be fitted to the m90x1 thread on the GSO Ritchie Cretian 6” and 8”? The Crawford focuser sold with these scopes are very substandard.

Question by: Hugh Coleman on Mar 19, 2022 9:11:00 AM | 1 Answer(s)

Rating of Question

In one of the questions above, you recommend placing the 0.63x reducer/corrector after the Steeltrack focuser. Which adapter would I need to thread the reducer/corrector directly to the Steeltrack focuser?

Question by: Darren on Mar 31, 2019 8:06:00 AM | 1 Answer(s)

Rating of Question

Do you think that 2" BDS-SC Focuser can replace the Zero Image Shift Microfocuser on 10" LX-200-ACF (GPS + AutostarII / Dated 2009) from Meade ? Or can you propose another solution with fine-focus mechanism, even it is in manual mode ? Thank you very much for your answer.

Question by: Manuel on May 12, 2018 10:14:00 PM | 1 Answer(s)

Rating of Question

I have a Celestron 9.25" Edge HD SC, A Baader BDS-SC focuser, a Celestron offset guider, and a Zau camera. When I put this all together the distance to the camera sensor is 6 3/4" which is beyond your recommended optimum back focus distance of 5 3/4". I found that if I remove the large nut at the back of the rear cell of the scope and set the focuser over the threads my back focus distance is almost perfect. My problem is I need an adapter that will fit the threads, with the nut removed, at the rear cell and also thread into the focuser. Is there such an adapter? My only other choice is to remove the focuser from the assembly. Any advice would be greatly appreciated.

Question by: Mike on Jan 4, 2023 1:00:00 AM | 1 Answer(s)

Rating of Question

Buenas noches
El Enfocador Diamond Steeltrack® Baader BDS-SC de 2 ", es compatible con un Mac de 180 y un steeldrive II
Saludos
Jorge

Question by: Jorge Ivan FERNANDEZ ALCANTARA on Dec 11, 2020 10:11:00 PM | 1 Answer(s)

Rating of Question

Do you know if we can use the BDS-SC with the Celestron Edge HD focal reducer for Edge HD 8"?

Question by: Stefan Broquet on Mar 24, 2017 12:20:00 PM | 1 Answer(s)

Rating of Question

how do you remove the 2 inch adapter to access the celestron 3.3 inch thread?

Question by: Grant on Mar 18, 2022 2:27:00 AM | 1 Answer(s)

Rating of Question

Is there an adapter that will fit the male threads of Celestron 925 Edge HD on the rear cell and also fit the back of the @"BDS-SC female threads with the 2" adapter removed.
Second question: Is this advisable?
Thank You for any information that you may provide.

Question by: Mike on Nov 17, 2020 12:44:00 AM | 1 Answer(s)

Rating of Question

i have this focuser: 2" BDS-SC Baader Diamond Steeltrack® Focuser for my MEADE ACF SC but i want use also for my GSO RC10 TRUSS telescope. Do you have a ting adapter for m117(3,5") to m82 (3,3") ? Thanks

Question by: max on May 15, 2022 7:05:00 PM | 1 Answer(s)

Rating of Question

Hello, I want to install this focuser to my Maksutov 180 f/15 from Sky-Watcher (Skymax 180 Pro). My scope has a Schmidt-Cassegrain exit. Will it be feasible ?

Question by: Stef on Jul 9, 2022 4:50:00 PM | 1 Answer(s)

Rating of Question

Hay espacio suficiente entre Telescopio y Horquilla para sustituir el microenfocador de Meade en un LX600 de 14" por 2" BDS-SC Baader Diamond Steeltrack Focuser?

Question by: JM on Jun 13, 2021 7:52:00 PM | 1 Answer(s)

Rating of Question

Is an adapter needed to connect the celestron 0.63 reducer to the steel track focuser?

Question by: Sean van Drogen on Nov 23, 2021 3:59:00 PM | 1 Answer(s)

Rating of Question

I want to replace my stock focuser on my Omegon Ritchey-Chretien Pro RC 304/2432 Truss OTA with the 2" BDS-SC Baader Diamond Steeltrack. I need an adapter ring that will fit the Steeltrack to the OTA's M117 male thread. Could you advise which would be suitable?

Question by: Philip on May 12, 2022 6:26:00 PM | 1 Answer(s)

Rating of Question

Is 2" BDS-SC Baader Diamond Steeltrack® Focuser compatible with ZWO EAF (new version)?

Question by: Loki on May 25, 2023 1:41:00 PM | 1 Answer(s)

Rating of Question

Do you have to use spanner wrench to take the 2” adapter off??

Question by: Paul on Sep 25, 2023 5:26:00 PM | 1 Answer(s)

Rating of Question

I would like to place my Celestron 6.3 reducer behind a 2" BDS-SC Baader Diamond Steeltrack® Focuser. Is there a direct connection or do I need to use a nosepiece and the compression rings of the focuser ?

Question by: Ronald Havelock on Aug 20, 2021 4:37:00 AM | 1 Answer(s)

Rating of Question

Hello, I'm looking for a taller focus travel. I have a LX200 12' and I'm asking myself if 30mm focus travel will be enough. In fact, I've seen the RT version and I'm asking myself if the RT focuser won't fit onto my LX200.
I have an other question, which adapter do you recommend to be used between my LX and that focuser ?

Question by: Alexandre on Aug 11, 2022 10:02:00 AM | 1 Answer(s)

Rating of Question

According to the technical drawing in the BDS manual, there is a M55x1 thread below the S58 receptacle in the drawtube. Can you confirm that this is correct and specify at which depth, measuring from the top of the drawtube (with all accessories removed), does the thread start and how long is the thread.

Question by: rick on Aug 14, 2023 7:54:00 AM | 1 Answer(s)

Rating of Question

Does the S58 dovetail mean that the steeltrack effectively has a rotator built in? I mean, if I use an S58 dovetail to M48 adapter for example to thread into my imaging train, I could then clamp it down onto the steeltrack in any chosen orientation of the camera?

Question by: Paul B. on Mar 11, 2019 9:26:00 PM | 1 Answer(s)

Rating of Question

-1

How long will it be until this focuser is back in stock?

Question by: 2" BDS-SC Baader Diamond Steeltrack® Focuser on Mar 3, 2022 12:13:00 AM | 1 Answer(s)

Rating of Question

-3

Will this focuser work with Ioptron RC-8

Question by: Lee on Oct 1, 2022 9:09:00 PM | 1 Answer(s)

Rating of Question

-4

My existing William Optics GT71 focuser have some issues with ZWO EAF, I want to use your focuser in my William Optics GT91 telescope. Which model is suitable. Is there any accessories to buy extra. ? Can I fix ZWO EAF with your focuser?
Awaiting your reply.

Question by: Balasundaram on Jul 22, 2023 7:05:00 PM | 1 Answer(s)

Rating of Question

-5

Can the Baader Diamond Steeltrack® (BDS-SC) Focuser for Schmidt–Cassegrains be used with Maksutov–Cassegrains (specifically Orion Optics (UK)'s OMC200 (https://www.orionoptics.co.uk/OMC/omc200maksutovca.html)? If so, I'll order the focuser straight away! Many thanks. – Peter Gill

Question by: Peter B. J. GILL on Nov 6, 2019 1:43:00 PM | 1 Answer(s)

Rating of Question

-6

Will it work with a 6" Classical Cassegrain? And if so, will it reach focus on its own, without the need for extension rings?

Question by: Vlad Martis on Aug 3, 2021 9:54:00 AM | 1 Answer(s)

Rating of Question

-6

To answer this question, we need to know the backfocus of your telescope. If it is not given in the instructions, you need to measure it.
Eitherpoint it at the moon and put a piece of of paper behind it, so that you can see a sharp image - the distance between paper and telescope is the back focus. Or, if you already have a focuser, point it at the stars with either a camera attached or star diagonal and eyepiece, and measure the length of your focuser. Pleas note that eyepieces, DSLRs and astronomical cameras all have different optical lengths! A DSLR requires 55mm of backfocus, a CCD-camera often only about 1cm, and a 2" star diagonal about 11cm - so may work with an eyepiece and star diagonal without extensions, while a CCD-camera may require an extension.

The SC-version of the Steeltrack has got a focus travel of 30mm, so if you are switching between a 2" star diagonal and an astronomical CCD-camera, you will require an extension. The possible minimum heights are as follows
as supplied, incl. 2" clamp: 93 mm
with optional S58 direct-thread adapters: 80 mm

The RT-version for refractors may fit too, it has got a longer focus travel of 80mm and the following minimum lengths:
as supplied, incl. 2" clamp: 70 mm
with optional S58 direct-thread adapters: 59 mm
with optional S58-ClickLock clamp: 89 mm
You have to check the manual to see if one of the adapter threads matches your telescope, or if you need to manufacture a special adapter.

The SC version has got a shorter focus travel as you are more flexible with a Schmidt-Cassegrain and its moveable ain mirror than with a refractor telescope.

Answer by: Baader Web Team (Admin) on Aug 3, 2021 11:16:00 AM

Rate Answer

You must be logged in to answer questions.

I'm considering buying a BDS -SC to use with a Celestron Edge 11 HD. I see that it works with the scope at its native focal length. I also have the Celestron 0.7x reducer specifically for the edge 11. This gives exactly the same back focus (146.05mm) as at the native focal length. It seems to me that the BDS-SC will work with the 0.7x reducer but I read somewhere that you don't recommend this. Could you clarify if it will work with this specific Celestron 0.7x reducer, part # 94241? Thank you.

Question by: Peter Haworth on Aug 8, 2023 4:24:00 AM | 1 Answer(s)

Rating of Question

-6

The 0.7x reducer for the Celestron Edge 11" models has a longer backfocus of 146.05mm compared to the 8" models which have a backfocus of only 105mm. So for the 8" model the space including the Baader Steeltrack would not be enough, this information you surely got from our FAQ.

However, since the reducer for the 11" model has a longer backfocus, the backfocus will most likely be sufficient. When fully extended, our Baader Steeltrack takes up 123mm, leaving 23.05mm for the adapter and camera backfocus. This is very tight, but should just barely work.

Note that with this type of telescope, the position of the reducer is intended to be a certain distance from the corrective lenses. It's not like putting a reducer on a standard SCT. There's a group of corrective lenses in the Edge scopes. So make sure you screw the reducer directly onto the tube and then screw on our Steeltrack focuser. Otherwise, the reducer may not correct to the corners and the risk of unwanted vignetting will increase significantly.

Answer by: Baader Web Team (Admin) on Aug 10, 2023 11:29:00 AM

Rate Answer

You must be logged in to answer questions.

I have a BDS-SC/HD which I am using on a Meade LX-85 6" ACF with a Pentax KP camera attached via a T2 adapter. It works very well, thank you.

My question is, will your UHC-S / L-Booster-Filter 2" fit internally in the BDS-SC/HD? If not, do you have another method to use the UHC-S filter with the setup mentioned above?

Question by: Mike Herdering on Sep 2, 2020 12:44:00 AM | 1 Answer(s)

Rating of Question

-7

To avoid obstructions in the lightpath by a 2" filter, which is smaller than the inner diameter of the focuser tube, there is no option to mount such a filter inside of the focuser.

But you have two options:
- The Baader 2" nosepiece to T-2 / M48 (T-2 part #16) # 2408150 has got a thread for 2" filters
- The UFC filter drawer https://www.baader-planetarium.com/en/filters/universal-filter-changer.html is also compatible with the Diamond SteelTrack focuser. You can mount e.g. Diamond Steeltrack® M68 Adapter # 2957206 or Diamond Steeltrack® M48 Adapter # 2957204 at the SteelTrack and then configure a UFC filter drawer with M68 (for maximum aperture) or M48 connection on the telescope side and a T-2-thread on the camera side - or a wider connection for M48 or larger and one of our Wide T-rings to reduce vignetting of full-frame cameras as much as possible. A T-thread is smaller than a fullframe sensor, so that a Wide T-Ring is helpful with larger sensors.

Answer by: Baader Web Team (Admin) on Sep 2, 2020 10:00:00 AM

Rate Answer

You must be logged in to answer questions.

Please can you indicate which Diamond Steeltrack focuser will fit to an Orion-Optics ODK10 reflector telescope.

Question by: Mike Trethewey on Mar 4, 2021 8:22:00 PM | 1 Answer(s)

Rating of Question

-11

Hi, can I use on a sky watcher Mac 127?. Thanks!

Question by: Alvaro Rivas on Oct 8, 2022 2:23:00 AM | 1 Answer(s)

Rating of Question

-11

Do you have adapters for Takahashi Mewlon or CN212?
Thanks in advance.
Eric

Question by: Eric on Sep 8, 2017 7:44:00 AM | 1 Answer(s)

Rating of Question

-12

Can I confirm that the focuser can be easily rotated to frame a desired field of view? The "specifications" section indicates that it is rotatable, but I see nothing in the instruction manual to indicate how this is achieved.

Question by: Darren on Mar 22, 2019 1:54:00 PM | 1 Answer(s)

Rating of Question

-12

I have an ETX-125 (Mak) with a Wegat back. The output port is technically an SCT thread 2-24 (2’’ diameter, UNF 24 thread).
I also own a Diamond Steelrack SC which has a 2’’ 1.0 (metric) thread.
The threads are incompatible despite both being called SCT.
Do you sell an adapter from thread UNF24 to 1.0 ? otherwise what are my options ?

Question by: Frederic Detienne on Apr 7, 2021 12:37:00 PM | 1 Answer(s)

Rating of Question

-13

I would like to know 1) if and how I can fit this focuser to my Skywatcher MAK127 (bought ~2 years ago) ; do I need some kind of adapter ? will the original focusing knob at the visual back of the MAK still be accessible ?
2) same question for Skywatcher MAK180
Thanks a lot !
Frank

Question by: Frank on Sep 3, 2017 3:25:00 PM | 1 Answer(s)

Rating of Question

-14

We do not have the technical data of all telescopes, so you should have to check the manual of your telescope or contact the manufacturer to be sure. However, the BDS-SC comes with adapters to 2" UNC (SC-thread) and 3,3".

The Sky-Watcher 180 *should* be equipped with a standard SC-thread (2), so you should be able to attach the BDS-SC without any problems - if the description I have found onlie (still) applies to your specific model; technical data can change over the years.

The Mak127 seems to have only a T-2-thread (and a clear aperture of 1,25"), so a 2"-focuser may be a bit over-sized. But you should be able to attach the focuser with the Baader Expansion Ring 2"a/T-2i with 1mm optical path length (T-2 part #28) #2958242. Please check the manual und Downloads for the dimensions the the steeltrack, to see if you get problems with the focussing knob of your telescope.

You can still use the main mirror focuser of your telescope when the SteelTrack is installed.

Answer by: Baader Web Team (Admin) on Sep 4, 2017 9:23:00 AM

Rate Answer

You must be logged in to answer questions.

What screws on the steeltrack sc focuser allow for the adjustment of rotation of the focuser after installation . Are these the screws marked as number 3 on the instruction manual. Thank you.

Question by: Daniel on Aug 3, 2019 2:31:00 AM | 1 Answer(s)

Rating of Question

-14

Hello,
Can I install the 2" BDS-SC Baader Diamond Steeltrack® Focuser on a Takahashi Mewlon 250CRS?

Question by: Javier Colon on Dec 10, 2022 6:51:00 PM | 1 Answer(s)

Rating of Question

-14

Description

Details

Application example of BDS-SC Diamond Steeltrack®

General Specifications for all Baader Diamond Steeltrack^® (BDS) focusers:

Drive system

True diamonds form a micro-geared high precision drive system never accomplished before
In comparison to conventional crayford or rack & pinion drives, this micro-geared movement has zero backlash, zero cogging, and zero flexure
Diamond Steeltrack® 2" focusers lift a payload of 6kg (13 lbs) straight up, without slipping, without excessive bearing preload (bearing preload can be increased further if necessary)
Bearing system utilizes unbreakable Instrument Grade Roller-Bearings instead of simpler Ball Bearings - handles higher loads with greater rigidity and accuracy. No Teflon-pads anywhere
1:10 Stainless Steel fine-focus mechanism, ready for attachment of the optional Diamond Steeldrive temperature-compensating motor drive system
Detachable drive block assembly is reversible for right hand or left hand fine-focus operation and for attaching the Diamond Steeldrive motor block
Shortest possible mechanical design achieves optimum balance between focuser height (backfocus) and rigidity requirements
Zero shift locking knob to precisely stop any movement without affecting optical axis adjustment

Multiple Adapters available for shortest possible connection to most cameras / eyepieces

Mounting of BDS-Adapters on the example of BDS-NT Diamond Steeltrack®

Clamping system

S58 Dovetail ring-clamp built into focusing tube for accepting optional T-2 / M48 / M68 and other S58 direct-thread adapters to enable direct thread connection of accessories and cameras without 2" clamp
2" eyepiece clamp with hardened bronze clamp ring (length of clamp: 12.5mm / ½") included as standard
Optionally available 2" Baader Clicklock-clamp w. integrated S58 dovetail (added length: 16mm / 5/8")
Two auxiliary threads (M60x1 and M55x0,75) cut into the RT & NT focusing-tube for attachment of dedicated field flatteners or focal reducers/correctors

BDS-SC: all views

Imaging / eyepiece projection on the example of BDS-RT Diamond Steeltrack

Focusing Drawtube:

Each bearing individually adjustable for precise alignment of mechanical vs. optical axis
Ultra-hard subzero coated bearing races – precision milled and much harder than anodizing or stainless steel
Oversized 55mm inner clear diameter, to prevent vignetting, with anti-reflection knife-edge baffles

Specifications

Additional Information

Manufacturer	Baader Planetarium
SKU (#)	2957220
Net weight (kg)	1.07
EAN Code	4047825031983
Focuser Travel	30 mm
Payload Capacity (kg)	6 kg
Inner Diameter / Clear Aperture (mm)	55
Shortest overall height (standard)	93 mm
Shortest overall height (w. opt. adapters)	80 mm
Reduction	1:10
Rotatable	Yes
Finder base	No
Motorized	No, but can be upgraded
Special Features	True diamonds form a micro-geared high precision drive system
Included Accessories	Includes adapter to fit all C14/C11/C9¼/C8/C6/C5 OTA’s
Inner Connection (lens sided)	2"/SCT Thread (50.8mm), 3.3"/SCT Thread (84.2 mm)
Inner Connection (eyepiece/-camera-sided)	ø 2" (50.8mm), M55, S58
Optional Accessories	Baader Steeldrive temperature compensating motor drive system
compatible telescopes	Schmidt-Cassegrain
Focuser style	Crayford
Focuser size	2 inch

Downloads