Alpine Astronomical T-2 Female M48 Expanding Ring

Product Code: eq57259
Availability: In Stock

$90.00 $141.30

Qty

16 reviews Write a review

Description
Reviews (16)

The Alpine Astronomical T-2 Female M48 Expanding Ringis a knurled adapter ring that converts an M48 female thread to an M42 x 0.75 (T-2) female thread.

Extension Ring for Telescopes M42 x 0.75 (T-2) Female Thread M48 Male Thread 2.5mm Optical Path Length Knurled Rim for Easier Handling

Parameters
Threads	M42 x 0.75 (T-2) female M48 male
Properties	0.098" / 2.5 mm optical path length
Weight	0.39 oz / 11.0 g
Packaging Info
Package Weight	0.03 lb
Box Dimensions (LxWxH)	2.3 x 2.2 x 0.6"

Related Questions and Answers

Q: 1. Can I use the Baader 76 degree Morpheus 4.5 mm eyepiece in the Celestron Regal M2 100ED spotting scope I have ordered from B&H?

A: It probably wont work properly because its too magnified. The Spotting scope is too short a focal length, I would recommend a 12 mm & higher.

Q: 2. Does this work for visual astronomy also, or is it more designed for astrophotography?

A: Yes, this can be used as a conventional Barlow for viewing.

Q: 3. Would this lens Will this EP work effectively in a f/10 C5 scope?

A: Yes this Eyepiece would work with that Scope.

Q: 4. Baader and other sellers offer an additional M48 insert with this package. Does B&H offer this?

A: Yes the Alpine Astronomical Baader T-Ring Camera Adapter (Sony E/NEX) includes an M48 thread for more compatibility options.

Q: 5. Is this filters that make planets less bright?

A: The Alpine Astronomical Baader 3.0 Neutral Density Filter is used to reduce the amount of light coming into your eye during lunar observation and improve the view and contrast. It is not made for planetary use.

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. Dose it has a Ultra-Short version like EOS adapter?

A: Celestron T-Ring for Nikon F-Mount Cameras BH #CETRN • MFR #93402

Q: 8. Is it parfocal with other Alpine Hyperion eye pieces?

A: This is the only additional information B&H has on the Alpine Astronomical Baader 72° Hyperion 36mm Aspheric Eyepiece (1.25"/2") https://alpineastro.com/products/baader-36mm-hyperion-aspheric-2-eyepiece And yes to the compatibility with other eyepieces

Q: 9. Baader sells this part packaged also with an M48 ring insert (only in the case of the Sony adapter). Do you include this extra ring?

A: Here is a list of the Baader rings B&H sells for Sony https://www.bhphotovideo.com/c/products/astrophotography-adapter-rings-extension-tubes/ci/48682?filters=fct_brand_name%3Aalpine-astronomical&searchWithin=sony

Q: 10. 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.

William	26/09/2024
[0.03 lb] One of the best items I've purchased for my 140mm telescope. The reduction in sky glow and the contrast improvement add to those Oh, Wow! moments of star gazing. 5

Robert	08/09/2024
[0.03 lb] It works just fine. 5

Adam	04/09/2024
[0.03 lb] Very nice. Could use one more thread though. Seems a little short on threading when trying to attach and remove while making lens changes in the dark. Makes me a little nervous sometimes that I will drop it during removal from the lens. Good quality though and I like having it around. 5

Eric	17/08/2024
[0.03 lb] Needed something to get the Nikon Z onto my telescope. This works very well, rock steady... 5

Richard	17/08/2024
[0.03 lb] When I remove a camera from the telescope the scope is open for dust to get inside. I was using a baggie to cover the end but that's not really a good solution. This T-2 cap it perfectly and provides an easy to use seal protecting against dust intrusion. 5

John	15/08/2024
[0.03 lb] did actual Ronchi star test with Celestron C5C works as advertised 5

Richard	13/07/2024
[0.03 lb] 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

Javier	01/07/2024
[0.03 lb] Excellent filter 5

Paul	27/06/2024
[0.03 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