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Antares 2" Twist-Lock Eyepiece Adapter with 2.3" Extension # ET2-TL

4.8 (5 Reviews) Read Reviews Write Review
Brand Antares
Part Number ET2-TL
Availability available

Product Info

Manufacturer Description

Since the introduction of their innovative 2" to 1.25" Twist-Lock Eyepiece Adapter by Antares, astronomers have been clamoring for a 2" version of this best selling item. Well - it's finally here!

Forget about fumbling for thumbscrews in the dark. With this innovative 2" eyepiece adapter from Antares, just twist the lock ring and your 2" eyepiece, camera nosepiece, or laser collimator is centered precisely in your 2" focuser! Standard 2" adapters use a thumbscrew which pushes the inserted accessory to one side when tightened thus skewing collimation or optical performance; not so with this adapter.

Features:

  • Helical centering and compression mechanism
  • Knurled twist-lock ring
  • Works with smooth and recessed eyepiece barrels
  • Polypropylene compression ring will not mar your eyepieces
  • All metal construction (except for the compression ring)

Use of this adapter adds 2.29" (58mm) of extension to your 2" focuser. The total minimum length of this adapter is 3.51" (89.1mm) and this will increase by 2-5mm depending on where the knurled ring comes to a stop when it clamps on to the inserted accessory. Weight = 6oz. Made in Canada.

Please note:

  • This adapter is not threaded to accept standard 2" astronomy filters
  • When you first get the adapter, you may find that the inserted 2" eyepiece or accessory does not slide in fully and hits the upper edge of the compression band that may have compressed to an inner diameter of less than 2". This is easily remedied by unscrewing the upper knurled ring, removing the compression band, and stretching it a bit to increase its inner diameter.

Reviews

4.8 (Based on 5 Reviews) 80% of reviewers recommended this product.
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    1. Guest

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      User Notes:
      Review by Mike of GDL, MX.
      1454630400
      Feb 4, 2016

      5.0 Does the job without problems

      Pros:

      Strong Construction,Accurate,Easy to Use

      Cons:

      Comments:

      I use these item as an adapter extension to reach back focus in my refractor with a D-SLR camera, helps centering the camera and the only action you do is a twist, a good advantage during night sessions, forget about those screws and knobs.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    2. Guest

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      User Notes:
      Review by John J. of South Dakota.
      1408147200
      Aug 15, 2014

      4.0 Very nice extension tube

      Pros:

      Lightweight,Easy to Use

      Cons:

      Comments:

      Work good for skinny EP's but the clamp ring is difficult to reach with a 31 Nagler or other large diameter ep's.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    3. Guest

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      User Notes:
      Review by olddogg60 of Homedale, Idaho.
      1396051200
      Mar 28, 2014

      5.0 If you need an extention, this is it.

      Pros:

      Easy to Use,Strong Construction

      Cons:

      Comments:

      With two different lengths, you can probably get the length that you need. I have both lengths and they work very well for my purposes. They are easy to use and solid.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    4. Guest

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      User Notes:
      Review by nova sedis of Forsyth, GA.
      1342742400
      Jul 19, 2012

      5.0 Bye bye set screws

      Pros:

      Easy to Use,Strong Construction

      Cons:

      Comments:

      Use to bring upgraded focuser up to correct focal length. The new lock ring device is a joy to use.

      Bottom Line: Would you recommend this item? No
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

    5. Guest

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      User Notes:
      Review by peeech of North Augusta, SC.
      1319846400
      Oct 28, 2011

      5.0 Very Nice Product

      Pros:

      Strong Construction,Well Made,Easy to Use

      Cons:

      Comments:

      Good value and good service. Agena Astro is tops!!

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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