Home/Accessories/Adapters & Clamps/Eyepiece Clamps / Nosepieces/1¼" ClickLock® clamp to T-2i

The Baader ClickLock®-System (1¼" / 2") in an overview

Never before has an eyepiece clamp for amateur astronomy been so elaborately crafted.

Das Baader ClickLock System - 1.25 und 2 Zoll

Change eyepieces in seconds – with just one turn

The Baader ClickLock (1¼" / 2") is a precisely fitting, very massive eyepiece clamp without clamping screws (!). Inserted eyepieces, CCD cameras and similar accessories are securely held in place, locked against rotation and won't be scratched in any way! With a small turn of 20°, each eyepiece is firmly clamped. You will never have to handle small locking screws again – instead, just rotate the top of the eyepiece clamp for a few degrees, and the eyepiece will be firmly fixed. This is also no problem with gloves on!

Our various ClickLock clamps are made of seven precision-machined components which provide a highly effective retention mechanism that securely holds any 1¼" or 2" eyepiece. The clamp is very expensive to assemble, the price therefore initially may appear high for "nothing more than" a clamping device. But if you think about the comfort, precision and stability, it's well worth the money.

You do not have to tighten the ClickLock clamps with brutal force, because the mechanical principle comes from professional mechanical engineering. This is how the tool holder in modern CNC milling centers works. Clever use of leverage multiplies the torque. The inserted object is held on three sides similar to a quick-action chuck and can therefore no longer carry out any tilting movements.

Details on the 1¼" ClickLock clamp (T-2 part #8)

Unscrewing the micro focus ring will reveal a T-2 male thread underneath, which can be used to mount T-2 spacers, T-rings, digital T-adapters, and digital cameras. In this way, every 1¼ "eyepiece can be changed instantly - and even be focussed! No annoying screw is in the way, and the rotation of the clamping is so short that a very slight hand movement is sufficient -an eyepiece clamp has never been easier. Heavy CCD cameras can be connected securely with just a moderate amount of tightening force!

Our T-2® system offers many more bayonet quick changer and rotators to safely secure any imaginable recording device. There are three different digital T-adapters and about 20 digital T-rings for almost all digital camera brands available!

1¼" ClickLock Highlights

no clamping screws
extremely strong/secure clamping with just a slight turn (about 20 ° rotation
no damage to the eyepiece barrels
clamping principle from professional engineering - like a quick-action chuck, from the tool holder of CNC milling machines
seven precision milled parts with complex assembly result in the most user-friendly eyepiece clamp of all time, designed in Germany!
low price despite the highest production costs
accepts all 1¼ "eyepiece types with any locking groove
eyepiece-side T-2 thread - transforms your eyepiece clamp into an eyepiece projection holder!
Connections for most digital cameras optional
Focusing thread (for use on a T-2 Zenit prism) with 5mm stroke and 0.5mm fine thread, lets you focus a SC optics directly on the eyepiece - without mirror shift.
Resolves all adjustment problems - every 1¼ "eyepiece or measuring device (eg laser colli) is adjusted automatically parallel to the axis - even with diameter deviations.

Application examples on 1¼" ClickLock clamp

1¼" ClickLock® clamp to T-2i

Product Details

SKU
2458100
EAN Code
4047825010247
Manufacturer
Baader Planetarium

Ports & Compatibility

Clamping System
ClickLock
Compatible Brands
Baader Planetarium
Inner Connection (eyepiece/-camera-sided)
ø 1¼" (31.75 mm)
Inner Connection (lens sided)
M42 x 0.75 (T-2)
Outer Connection (eyepiece/-camera-sided)
M42 x 0.75 (T-2)
T-2 Part #
08

Dimensions & Weight

Inner Diameter / Clear Aperture (mm)
31,75 (1¼")
Net weight (kg)
0.07
Outer Diameter
49

Optical & Usage Specifications

Optical length (mm)
32 - 38
Type of Adapter
Eyepiece Clamp
Variable Focusing
Usage
schnelle Klemmung von jedem 1¼" Zubehör

Customer Reviews

5.0

reviews

Tell us what you think about this item!

Top customer reviews

Bernd

2026-08-20 15:57:31

I recommend this product

Rating

ClickLock- einfach Klasse

Super. Möchte ich nicht darauf verzichten

Ich benutze die ClickLock Klemme schon lange an meinem C8. Mein 2. Teleskop einen 102 mm Refraktor habe ich nun auch damit ausgerüstet. Die Klemme ist super. Keine nervigen kleinen Schrauben mehr. Einfach nur am Ring etwas drehen und das Okular sitzt sicher und fest. Auch meine Kamera ist durch einen leichten Dreh fest am Okularauzug. Einfach super. Kann ich voll und ganz weiter empfehlen.

Es gibt nichts Negatives

db2005

2024-02-19 16:54:50

Rating

Convenient Clicklock

I bought the Clicklock to fit a 1.25" eyepiece/diagonal to a M44/T2 adapter on a Zeiss Telementor telescope since I want to use 1.25" eyepieces. I have actually replaced most of my eyepiece clamps with ClickLock clamps. They are very convenient to use; no fiddling with tiny screws in the dark, a quick twist is enough tighten or loosen the clamp. Fit and finish are excellent.

Extremely convenient in use, and automatic centering!

Nothing

Astro Tafelberg

2023-08-08 12:18:23

Rating

3fach Barlow vom SunDancer II

Ich besitze bereits einen 2x und einen 4x Teleextender für Mond-/Sonne- und Planetenaufnahmen. Nachdem ich jüngst bei meinem H-alphasystem, dem SunDancer II, die 3fach Telezentrik durch die neue 4fach Telezentrik ,TZ-4s, ausgetauscht habe, hatte ich also eine gute 3fach Barlow herumliegen. Mit dieser OKULARKLEMME und der 40mm T2-Verlängerungshülse habe ich den notwendigen Abstand vom letzten Linsenelement zum Kamerasensor der Webcam, um hoffentlich qualitätsvolle Aufnahmen damit machen zu können.

Die praktische Klemmung

Raf

2022-03-21 09:10:58

Rating

Clicklock Eyepiece clamp 1,25"

Super product. Good clamping and major application with the diopter adjustment when used with a BFM to get the eyepiece raiser sharp!!

Combi application clamping and diopter adjustment

J.P.S.

2021-02-22 20:02:51

Rating

Mehr als ein Gimmick

Die Klemmvorrichtung ist sehr präzise und hält auch größere Aufbauten sehr zuverlässig.

Carl Webb / April 21, 20261 Answer

The design does not include a lever pin, because that would require the ability to adjust the lever to the optimal position for each user. For the 2" ClickLocks, I had designed a rotatable threaded ring mounted at the bottom with an external keyway, so that by loosening six set screws at the bottom edge, the lever could be adjusted to the optimal position for each user.
However, the 1¼-inch ClickLock is not designed to transmit forces as great as those required by the 2-inch clamp. For this reason no lever and no built-in rotary adjustment mechanism is intentionally included in this small ClickLock.
Baader Web Team / April 21, 2026
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Ben Green / March 10, 20251 Answer

Do you have any extensions for the eyepiece side of this clamp that could be screwed onto the T-2 thread (which is made accessible by removing the focuser ring) and that could also hold an eyepiece for the clicklock clamp? I would like to be able easily alter the optical path to my different eyepieces using this clamp by removing or inserting such an extension. You have these 1508153 extensions: https://www.baader-planetarium.com/en/t2-extension-tubes-(7.5--15--40-mm).html They are nice (I have one), but because they are on the telescope side of the clamp, they require a lot of screwing and unscrewing to remove and then reinsert. These extensions will screw onto the revealed T-2 threads on the eyepiece side of the clamp, but they are not suitable for holding an eyepiece. One possible option: is there some kind of adapter that could be added to them and hold an eyepiece for the clicklock clamp? You have several 1-1/4" T-2 eypiece clamps that might screw onto the revealed T-2 threads of this clamp: https://www.baader-planetarium.com/en/ultrashort-1%C2%BC%22--t-2-klemme.html https://www.baader-planetarium.com/en/baader-1%C2%BC%22--t-2-eyepiece-holder.html But because these are separate clamps, the extension is quite large at 20mm or 23.5mm optical path. Would I would prefer, if you have one, would be either (1) a T-2 thread extension similar to the 1508153 extensions but that would be suitable for holding an eyepiece and use the clicklock that is already in this clamp or (2) a T-2 thread adapter for the 1508153 extensions that could hold an eyepiece in position for the clicklock clamp if those extensions were screwed onto the T-2 thread of this clamp. Please let me know if you have such a thing! Thank you very much for your assistance. Best, Joseph Guth

Joseph Guth / December 4, 20231 Answer

So, you basically want to use an eyepiece just some mm or cm higher above the clamp than usual? Then you might try to simply extend the 1,25" nosepiece with Baader 1¼" - 31.8mm nosepiece extension with 1¼" filter thread on both sides (T-2 part #05) # 1905130. This is an 18.5 mm long extension for the nose piece. This way, you can insert the eyepiece into the clamp as usual, but the distance is longer. If you want a defined distance between eyepiece and clamp, there is also the Stop Ring 1¼" (T-2 part #30) # 1905131 These items are mostly used to bring a small guiding camera on an off axis guider into the perfect distance, but it also works with eyepieces. And you can focus surprisingly good by just sliding an eyepiece up and down. The ultrashort clamp #2458121 is almost the shortest possible clamp if you still want some material left to keep the eyepiece from tilting, so extending the nosepiece is probably the best solution.
Baader Web Team / December 5, 2023
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For my celestron SCT XLT C8 I'd like to have a focuser near to the eyepiece, a more solid and versatile "back" for installing DSLR/planetary camera and a more quick and confortable changing eyepieces system. Well I thougt to use the Baader T Adapter (BTA) for SC (# 2408160), Baader Prism Diagonal T-2/90° 32mm (# 2456005) and this Baader ClickLock Eyepiece Clamp 1¼". Those are enough or I missed any pieces? Thank you so much!

Alfio Raciti / September 24, 20221 Answer

This will work for fine focus for visual use. Focus is adjusted by rotating the upper ring, this gives you 6mm of travel. For photography, you may want to consider the back focus distance of your telescope: https://www.celestron.com/blogs/knowledgebase/what-are-the-optimum-back-focus-distances-for-celestron-scts So you may want to use some T-2-extensions for a DSLR. Anyway, for focusing a DSLR, you should better use a large focuser like the 2" BDS-SC Baader Diamond Steeltrack® Focuser # 2957220. A 1.25" focuser will cause vignetting with the large sensor of a DSLR, as 1.25" is smaller than the sensor of a DSLR. We do not recommend a 1.25"-connection for a DSLR. (Bonus: You cn attach a motor focusser to the Steeltrack, which ist great when you are working a camera and a computer)
Baader Web Team / September 26, 2022
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Can the focus ring be locked / May 11, 20221 Answer

The focus ring can't be locked, but usually this isn't necessary. It doesn't move too easy. If you want a focussing T-2 eyepiece clamp with lock, but without Clicklock, there is Baader Focusing Eyepiece Holder 1¼" / T-2 (T-2 part #08A) # 2458125. If you want a 1.25" T-2 eyepiece clamp without fine focussing, there is Baader 2" to 1¼" ClickLock Reducer (T-2 part #15B) # 2956214. If you want to make several cameras/eyepieces parfocal, you can mount the Stop Ring 1¼" (T-2 part #30) # 1905131 permanently on their 1.25" nosepieces.
Baader Web Team / May 12, 2022
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jason haller / March 25, 20201 Answer

Service & Company

Service & Company

1¼" ClickLock® clamp to T-2i

The Baader ClickLock®-System (1¼" / 2") in an overview

Never before has an eyepiece clamp for amateur astronomy been so elaborately crafted.