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Alpine Astronomical 2" Locking Ring For Telescopes (black)

Alpine Astronomical 2" Locking Ring For Telescopes (black)
  • Product Code: eq57196
  • Availability: In Stock

$165.00 $239.25

Mount your Baader 2" Zenith diagonal to your telescope with the help of the Alpine Astronomical 2" Locking Ring for Telescopes (Black)from Alpine Astronomical. This locking ring allows you to firmly secure the prism in the limited space between the base of your mount and the back of the optical tube assembly (OTA) when the scope is pointed directly or almost directly overhead. It has a 2" female thread and a 0.2" (5.0mm) optical path and is compatible with Celestron 8", 9.25", 11", and 14" Schmidt-Cassegrain telescopes (SCTs).

For 8", 9.25", 11", 14" Celestron SCTs    Mates 2" Zenith Diagonal Directly    Fits Bulky Optics between Mount & OTA    Saves Space for NexStar Accessories    Can Improve FOV by 20%    Optical Path: 0.2" / 5.0mm

Parameters
Compatibility8", 9.25", 11", 14" Celestron Schmidt-Cassegrain telescopes
MiscellaneousOptical Path Length: 0.2" / 5.0mm
DimensionsInner Diameter: 2.0" / 50.0 mm
Clear Aperture: 2.0" / 50.0 mm
Outer Diameter: 3.81" / 97.0 mm
ThreadLens Side Inner Connection: 2.0" / 50.0 mm
Eyepiece Side Inner Connection: 2.0" / 50.0 mm
Weight1.4 oz / 39.0 g
Packaging Info
Package Weight0.135 lb
Box Dimensions (LxWxH)4.4 x 3.9 x 0.8"

Related Questions and Answers

Q: 1. Is this the Baader 8.3 mm long adapter?

A: Yes, the Alpine Astronomical Baader Wide T-Ring Set for Canon EOS R has an optical length of 8.3mm.

Q: 2. It looks like the ASFT 100 and the ASSF 80 will both fit my telescope. The Baader film is the same in both filters. What am I getting in the ASFT 100 that warrants spending the extra $10?

A: A larger metal ring. A larger film area.

Q: 3. Skywatcher Evoster 100 ED. Would this size fit my telescope?

A: Yes this Filter will work with that Model.

Q: 4. Would this lens Will this EP work effectively in a f/10 C5 scope?

A: Yes this Eyepiece would work with that Scope.

Q: 5. How can we adapt the 2" UV bandpass filter to a Sony E-mount 49mm lens?

A: I know of no adapter to mount a 2" (50.8mm) filter on to a 49mm opening. I do know some that use gaffing tape.

Q: 6. Does this work with other RF mount cameras or just the EOS R?

A: The Alpine Astronomical Baader Wide T-Ring Set for Canon EOS R fits all Canon RF mount cameras.

Q: 7. how to adapt this to a camera lens with a 62mm thread (yes, this will result in some vignetting which I will have to tolerate)?

A: Currently B&H does not stock an adapter allowing the Alpine Astronomical H-Alpha 20nm Bandpass Filter (2") to a camera lens with a 62mm thread.

Q: 8. Will the Sony RX100 vi work on the Baader Microstage II?

A: Yes it will.

Q: 9. Will this fit a M48 X .75 thread?

A: This is an M42 Thread, so it will not fit that threading size.

Q: 10. Is this 48mm?

A: No it is 2 inches which equals 50.8 mm B+W 48mm UV/IR Cut MRC 486M Filter BH #BW486MC48 • MFR #66-1069163 https://www.bhphotovideo.com/c/product/718417-REG/B_W_66_098546_66_098546_48mm_UV_IR_Cut.html

01/09/2024

[0.135 lb] I finally got a chance to use the T-ring on my friends Nikon Z-50 camera. It worked well with the extension tube I had and the T-ring fit the camera perfectly.

5
28/08/2024

[1.4 oz / 39.0 g] Basic adapter to facilitate mating camera (Nikon) to my Celestron Edge HD 11 SCT. Works perfect as it should.

5
19/08/2024

[1.4 oz / 39.0 g] It works just fine.

5
17/06/2024

[1.4 oz / 39.0 g] You get super quality plus flexibility to attach different accessories via its removable inner sleeve. VERY well made.

5
07/06/2024

[0.135 lb] I have an older model spotting scope that had long ago been used on a 35mm film camera and now wanted to try it on a Canon EOS camera. Talked to camera support and the this is the ring I needed for scope to work with my Canon. From preliminary testing, works great and now to see just how good it can be. I expect it to give good to great results.

5
23/05/2024

[1.4 oz / 39.0 g] This dovetail clamp is well made and has a quality finish. I am building my own custom telescope mount and this clamp should be a secure fixture for my application. The clamp accommodates Vixen-style dovetail bars and should support small to medium size telescopes without a problem. However, I would NOT put a large, heavy telescope on this clamp.

5
13/05/2024

[1.4 oz / 39.0 g] Needed something to get the Nikon Z onto my telescope. This works very well, rock steady...

5
22/04/2024

[0.135 lb] I recently purchased a Nexstar C5. I wanted to replace the 1 1/4" Visual back adapter and supplied diagonal. The Baader Short T adapter allows the use of the Baader T2 prism on this telescope. This combination has full clearance from the drive base at zenith. Some thing that you have to be very careful of when you replace any of the optical path with larger or better products. It also allows for clearance when the Celestron Wi-Fi adapter is inserted into the base. For the smaller nextar mounts the adapter is almost directly under the telescope but at an angle. The combination of this T adapter with the prism is very efficient tight and requires no set screws. It absolutely looks like how this mounting should've been done originally. Please note that the prism is the smallest T2 diagonal that Baader makes with the 32 mm clear light path. And normally comes equipped with an 1 1/4" nose piece on one side and an 1 1/4" eyepiece holder with helical fine focuser on the other. Simply unscrew the nosepiece from the prism and replace it with this short T adapter. There are larger diagonals with both mirror and prism in the Baader line and I cannot vouch for clearance with those models.

5
12/04/2024

[0.135 lb] Fits perfectly onto my declination bracket. Thanks!

5

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