Baader 2" ClickLock Diagonal Mirror

More Views

Application Images

Images uploaded by Customers

Add Your Review with Images
Baader 2" ClickLock Diagonal Mirror

# 2956100

€ 279.00 Price excl. German VAT tax (19%): € 234.45

Out of Stock  


  • 2" ClickLock Diagonal Mirror
  • Oversized 2 "dielectric lamda / 10 levels with 112mm optical length
  • Mirror repels UV and IR radiation, provides high security at the solar observation in white light and with Ha-sun filters
  • Scratch-resistant, hard-coated mirror surface for safe cleaning, scratch-resistant even in extreme conditions
  • Baader 2" ClickLock clamp for ultrafast clamping action
  • Removable 2" Safety Kerf nosepiece

Product Questions

Sort by ASC
Is the 2" ClickLock Diagonal Mirror (# 2956100) threaded for standard 2" filters? Thanks!
Question by: Marco Zanchetta on Oct 16, 2016 6:12:00 PM | 1 Answer(s)
I have a Celestron Edge HD 8" SCT. After a few months using the 40mm kit eyepiece, I'm looking to purchase a couple of Hyperion eyepieces. What ClickLock components would be required to mount this?
Question by: Greg Russell on Apr 25, 2017 2:58:00 PM | 1 Answer(s)
How secure is the nosepiece when coupled to the diagonal body? Is there any risk of it loosening when subjected to heavy loads with the diagonal oriented horizontally?
Question by: Aaron D. on Apr 8, 2018 3:29:00 AM | 1 Answer(s)
Is the housing for this diagonal CNC machined? And what features are there that ensure proper alignment of the mirror? What are the features of the mirror glass?
Question by: John Aviste on Sep 8, 2016 8:02:00 PM | 1 Answer(s)
I have a Celestron Nexstar 6SE SCT. Is the 2” diagonal compatible? Do I need adapters, which one?
Question by: Etienne Ali on Oct 4, 2020 4:12:00 AM | 1 Answer(s)
I have a Baader 2" click lock diagonal (#2956100) directly mounted to a SCT with a Baader 2" Nexstar locking ring. I just received a Baader 2" filter, but can find no way to insert this into the optical path, before or after the mirror. Is there an adapter available for this. Ideally, I would like to leave the filter in places instead of moving it from one eyepiece to another.
Question by: Mark Mayer on Nov 2, 2020 9:49:00 PM | 1 Answer(s)
I have a 2” clicklock star diagonal which has had the 2” telescope side nosepiece damaged. Is it possible to purchase a new 2” nosepiece separately?

Question by: John Bentley on Nov 19, 2020 2:01:00 PM | 1 Answer(s)
I have a Celestron CPC 925. I have just bought the Baader 2 inch Clicklock Dialectric diagonal. Your user guide says that if I unscrew the Kerf nosepiece the diagonal has two more useful connections: An SCT thread and a S58 dovetail. However, when I try to screw the diagonal body onto my SCT it will only screw on half a turn. The threads seem to be diffferent. what am I doing wrong? How do I access the SCT thread on the diagonal?
Question by: Andrew Austen on Aug 28, 2020 1:38:00 PM | 1 Answer(s)
What is the right type of screw driver to loosen the 6 M2.5 screws so the Click lock can be removed?
Question by: TomC on Oct 15, 2018 7:42:00 PM | 1 Answer(s)
Does the mirror diagonal reflect or pass through the UV/IR into the diagonal aluminum housing?

I want to use a petzval refractor for H-alpha solar observing with a dedicated solar filter. It is in general recommended not to use an UV/IR cut filter before the diagonal, since UV/IR reflections can come to focus in the petzval rear glass elements and harm the scope. If it rejects UV/IR by passing UV/IR into the diagonal housing, this is a big sales argument for the dielectric mirror when using a petzval scope.

Best regards
Question by: Thomas Jensen on Nov 28, 2021 11:23:00 AM | 1 Answer(s)
I have ordered Baader's hyperion mark 4 w/ 2.25x barlow, AND the Baader's 2" click lock diagonal. With the 2" thread on the zoom, and barlow installed, is this setup compatible with the 2" click lock diagonal? Thank you!
Question by: Ned Pickle on Mar 13, 2021 12:38:00 AM | 1 Answer(s)
I have a Meade Infinity 102mm refractor. I would like to replace the upright mirror diagonal using Baader. Is this possible or I need some adapter?
Question by: Darwin on Jan 23, 2019 10:51:00 PM | 1 Answer(s)
The Hyperion 17 baader eyepiece has the stop of the 2-inch barrel placed at 51,5mm. This eyepiece can be inserted into the 2-inch opening of the diagonal baader clicklock, without touching the diagonal mirror? Thanks for everything!
Question by: Armando Zurlo on Jan 23, 2019 3:31:00 PM | 1 Answer(s)
Hey! I wonder whether it'll work well with Skywatcher 72ED?
Question by: Bartek on Feb 25, 2021 12:57:00 PM | 1 Answer(s)
Will it work for deepsky use?
Question by: Eric on May 27, 2020 8:10:00 PM | 1 Answer(s)
For H-alpha solar observation, when using a front-mounted D-ERF energy rejection filter, what would be the best mirror diagonal to use? The 2" dielectric or the 2" BBHS silver mirror? Or would they both be equally good, given that the D-ERF has already narrowed the bandpass.
Question by: Jan S on Nov 1, 2021 9:47:00 PM | 1 Answer(s)
When mounting the diagonal on Celestron Edge HD 8" SCT, what's the optical path difference between:
- Using #2956220 Clicklock-SC
- Directly attaching the diagonal to the telescope using #245827 SCT lockring?
Question by: Jan on May 29, 2018 12:40:00 PM | 1 Answer(s)
I would like to ask if there is some nosepiece with 2 inch screw collar,like on celestron 2 inch star diagonal to fit this baader on the back of edge hd 925.I want to keep original 3.3 inch to 2 inch on the telescope attached. thanks
Question by: dusan on Sep 30, 2018 3:41:00 PM | 1 Answer(s)
Can a UFC be inserted between the 2" barrel nosepiece and the diagonal body (point A in this discussion: by using #2459128 and #2459120 for the telescope and camera adapters on the UFC respectively?
Question by: Josh on Mar 31, 2020 9:03:00 AM | 1 Answer(s)
Choosing Clicklock diagonal - exact dimensions needed.
Question by: Krzysztof K. on Nov 3, 2016 9:11:00 AM | 1 Answer(s)
Can I use an UV/IR-Cut filter or the BBHS mirror in front of an H-Alpha or Calcium Solar Filter? Do you recommend the 2" BBHS or 2" Clicklock Mirror for solar observation?
Question by: Enrique V. on Sep 26, 2016 3:04:00 PM | 1 Answer(s)


Baader 2" ClickLock®-Zenitspiegel


  • Oversized 2" dielectric 1/10 wave mirror
  • Scratch resistant hard coated mirror surface for safe cleaning, to remain scratch free even if subjected to harsh environment
  • Mirror rejects deep UV and IR radiation, safe for solar viewing with all White-Light and H-alpha solar filters
  • Mirror housing equipped with S58 dovetail and female M55/2" SC-threads on both sides
  • Baader 2" ClickLock clamp for ultrafast clamping action
  • Clamps heavy accessories effortless, with fingertip action
  • Removable 2" Safety Kerf nosepiece, both ends include M48 filter threads, featuring largest clear aperture for widefield application
Related Articles

Additional Information

Manufacturer Baader Planetarium
SKU (#) 2956100
Net weight (kg) 0.48
Optical Design Mirror Diagonal
Inner Connection (lens sided) Thread, M48, 2" (50,8mm)
Outer Connection (lens sided) Barrel, 2" (50,8mm)
Inner Connection (eyepiece/-camera-sided) Clamp, 2" (50,8mm)
Reflection surface Dielectrically coated
Image Orientation Erect image, Mirror inverted
Optical length (mm) 112
Clamping System ClickLock
Deflection angle 90°
Inner Diameter / Clear Aperture (mm) 46,6

You may also be interested in the following product(s)

Overall Average Rating:
3 reviews
5 star
4 star
3 star
2 star
1 star
  • Date - Newest First
  • Date - Newest First
  • Date - Latest First
  • Highest Rated
  • Lowest Rated
  • Most Helpful

3 Item(s)

U. Stibane 103/04/2021 14/04/202119:41
  • Rating:
wirklich Klasse !
Einsatz am 2" OAZ des 115mm f7 Photoline Triplet APO mit Baader Hyperion Mark IV Zoom Okular - gaaanz wunderbar, keinerlei Probleme da überragende Qualität - sehr zu empfehlen!!
Show more comments (-5) Hide comments
Martin 294/10/2018 22/10/201815:33
  • Rating:
ClickLock Zenitspiegel
Zenitspiegel sehr gut. Qualität ist super. Preis ist ok
Würde empfehlen.
Show more comments (-5) Hide comments
Sternenfreund 361/12/2017 28/12/201714:23
  • Rating:
Sehr robuster und perfekt justierter Zenitspiegel. Es sind keinerlei optischen Verzerrungen erkennbar, Das Bild ist gleichmäßig und verzerrungsfrei.
  • Stabil, perfekt justiert
  • Farbe, ich würde ihn mir in schwarz wünschen
Show more comments (-5) Hide comments

3 Item(s)

What kind of abuse are you reporting?
    Please, wait...