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Blue Fireball 1.25" Extension Tube with 2" Extension # X-06

4.9 (19 Reviews) Read Reviews Write Review
Brand Blue Fireball
Part Number PAAR-BF-X-06
Availability available

Product Info

Manufacturer Description

Description/Uses:

  • Adds 50.8mm (2") of back-focus travel to your telescope focuser
  • Fits standard 1.25" eyepiece tubes in telescopes and accessories like diagonals
  • With this, eyepieces and accessories that you may not have been able to use because your telescope tube was too short are usable again

Features:

  • Precision machined from aluminum and black anodized
  • Threaded to accept standard 1.25" astronomy filters
  • Features a brass compression ring so the inserted accessory will not be scratched or dented by the locking thumbscrew

Specifications:

  • Total Length = 2.91" (73.8mm)
  • Outside Length of Upper 1.25" Barrel = 2" (50.8mm)
  • Inside Length of Upper 1.25" Barrel = 1.92" (48.8mm)
  • Length of Lower 1.25" Barrel = 0.91" (23mm)
  • Maximum Outer Diameter (Excluding Thumbscrew) = 1.5" (38mm)
  • Thread Specification (Telescope End) = M28.5x0.6 Female
  • Thread Specification (Thumbscrew) = M4x0.7 Male
  • Weight = 1.7oz (48g)

Reviews

4.9 (Based on 19 Reviews) 95% of reviewers recommended this product.
Rating Distribution
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    1. Guest

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      Review by Richard K.
      1547908192
      Jan 19, 2019

      5.0 Perfect tool

      Pros:

      Cons:

      Comments:

      This is an excellent 1.25" extender. I purchased the set of 0.5, 1.0, and 2 inch extenders. I use these for astrophotography and getting my Takahashi FS 60C 355mm, f/5.9 to focus with some of my legacy eyepieces.

      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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      Review by Bruce H.
      1542595393
      Nov 18, 2018

      5.0 2" extension tube

      Pros:

      Cons:

      Comments:

      i purchased this to achieve proper spacing distance between focal reducers in an EAA video camera setup. Simple, inexpensive, accurate way to do it.

      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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      Review by Daniel D.
      1537966922
      Sep 26, 2018

      4.0 Extension tube

      Pros:

      Cons:

      Comments:

      Used to get my fuse camera in focus with my OAG. Works well but I needed to add a second short extension to get crisp focus. An extra 1/2 inch of length would have been perfect.

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

      This review was provided courtesy of AgenaAstro.com

    4. Bigfoot

      Bigfoot New Member

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      Review by Robert Z.
      1537441220
      Sep 20, 2018

      5.0 Fills the need with flare

      Pros:

      Cons:

      Comments:

      Nice outer and inner finishes. Generous-sized knob.

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

      This review was provided courtesy of AgenaAstro.com

    5. Guest

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      Review by Charles W.
      1534353095
      Aug 15, 2018

      5.0 Blue Fireball Extension Tube

      Pros:

      Cons:

      Comments:

      Worked Great

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

      This review was provided courtesy of AgenaAstro.com

    6. Guest

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      Review by Aaron L.
      1525052885
      Apr 29, 2018

      5.0 Well constructed extension tube

      Pros:

      Cons:

      Comments:

      A well-constructed extension tube that was shipped quickly and priced right. What a deal!

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

      This review was provided courtesy of AgenaAstro.com

    7. Guest

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      Review by Carlos L.
      1523401785
      Apr 10, 2018

      5.0 Better than Orion extension tube

      Pros:

      Cons:

      Comments:

      This extension tube is better than Orion because have a brass compression ring. Light weight.

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

      This review was provided courtesy of AgenaAstro.com

    8. Guest

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      Review by Randal D.
      1511123398
      Nov 19, 2017

      5.0 Nice product for the money.

      Pros:

      Cons:

      Comments:

      Nice product for the money. Less than half the price of others and better quality. Delivery was only 3 days. Very happy with purchase.

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

      This review was provided courtesy of AgenaAstro.com

    9. Guest

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      Review by Larry L.
      1506950541
      Oct 2, 2017

      5.0 Great Extension Tube!

      Pros:

      Cons:

      Comments:

      This extension tube is well made, dimensions as specified, light weight and the shorter nose tube doesn't interfere with the light path to my video camera. The 2" length is perfect to replace my diagonal and reach focus, plus the brass "clamp" strip under the thumb screw holds the camera more securely. All this and an unbeatable price, lightning fast delivery and an easy online ordering system make Agena Products my goto for future astronomical supplies and equipment!

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

      This review was provided courtesy of AgenaAstro.com

    10. Guest

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      Review by George M.
      1498755049
      Jun 29, 2017

      5.0 Works to give the necessary

      Pros:

      Cons:

      Comments:

      Works to give the necessary distance from focal reducer to camera.

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

      This review was provided courtesy of AgenaAstro.com

    11. Guest

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      Review by Tim S.
      1489583224
      Mar 15, 2017

      5.0 Solid construction

      Pros:

      Cons:

      Comments:

      Nice piece of kit, does exactly what it says on the tin. Save your money and buy this one.

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

      This review was provided courtesy of AgenaAstro.com

    12. Guest

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      Review by JHolland of Searcy, AR.
      1475452800
      Oct 2, 2016

      5.0 Excellent Addition

      Pros:

      Strong Construction,Lightweight

      Cons:

      Comments:

      I purchased this extension so that I could reach focus with my 70mm telescope with certain eyepieces. It is good construction and the clamp provides a rigid connection for the diagonal. I recommend any Blue Fireball products as they always perform well.

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

      This review was provided courtesy of AgenaAstro.com

    13. Wayne

      Wayne New Member

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      Review by Wayne of Omaha.
      1457740800
      Mar 11, 2016

      5.0 Excellent product

      Pros:

      Easy to Use,Strong Construction

      Cons:

      Comments:

      Excellent quality at such a great price. It is hard to get anything closet to this at the low price.

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

      This review was provided courtesy of AgenaAstro.com

    14. Guest

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      Review by John999R of Lincoln, CA.
      1454716800
      Feb 5, 2016

      5.0 Well crafted product, Blue Fireball is a quality company

      Pros:

      Accurate,Lightweight,Strong Construction,Easy to Use

      Cons:

      Comments:

      I used the extension tube to reach focus using Orion's SSAG and the Orion ST80 guidescope

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

      This review was provided courtesy of AgenaAstro.com

    15. Guest

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      Review by Mike of Fort Collins.
      1320624000
      Nov 6, 2011

      5.0 Quality extension tube

      Pros:

      Lightweight,Strong Construction,Easy to Use,Accurate,Compact

      Cons:

      Comments:

      Blue Fireball has really come out with nice reasonably priced accessories and this is one of them.

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

      This review was provided courtesy of AgenaAstro.com

    16. Guest

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      Review by Almir of Brazil.
      1319846400
      Oct 28, 2011

      5.0 As good as it can be

      Pros:

      Cons:

      Comments:

      Use it pretty much in every imaging session now, simple, easy to use, perfect fitting in every optical accessory I use.

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

      This review was provided courtesy of AgenaAstro.com

    17. Guest

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      Review by Astronomy Junkie of Kalamazoo, MI.
      1292889600
      Dec 20, 2010

      5.0 Great value for the price

      Pros:

      Easy to use,Versatile,Strong Construction

      Cons:

      None

      Comments:

      Wonderful for back-focus issues on Newtonian Optics! Very versatile, can be used for either viewing or Astrophotography. A very important piece of my collection!

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

      This review was provided courtesy of AgenaAstro.com

    18. Guest

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      Review by Ken of Brea, CA.
      1272672000
      Apr 30, 2010

      5.0 No surprises

      Pros:

      Nice Finish,Well Made,Strong Construction,Accurate

      Cons:

      Comments:

      I use a Stella Cam 3 with a Meade LX90-8. When I want to swap with an eyepiece I need this extender to avoid refocusing. Works great.

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

      This review was provided courtesy of AgenaAstro.com

    19. schulzep

      schulzep New Member

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      Review by Timber Wolf of Stephenville, Texas.
      1243382400
      May 26, 2009

      5.0 Good product just as advertised

      Pros:

      Cons:

      Comments:

      I use the extension tube which allows a guide camera to come into focus without using a diagonal.

      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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