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Blue Fireball 1.25" Extension Tube with 2.2" Extension # X-02

3.0 (3 Reviews) Read Reviews Write Review
Brand Blue Fireball
Part Number X-02
Availability available

Product Info

Manufacturer Description

Description/Uses:

  • Adds 57mm (2.24") 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


Specifications:

  • Total Length = 3.3" (84mm)
  • Outside Length of Upper 1.25" Barrel = 2.24" (57mm)
  • Inside Length of Upper 1.25" Barrel = 2.06" (52.2mm) *
  • Length of Lower 1.25" Barrel = 1.04" (26.3mm)
  • Thread Specification (Telescope End) = M28.5x0.6 Female
  • Thread Specification (Thumbscrew) = M4 Male
  • Weight = 2.8oz (79g)

Reviews

3.0 (Based on 3 Reviews) 67% of reviewers recommended this product.
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    1. Guest

      Skill Level
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      Time with Product
      Unknown
      User Notes:
      Review by Ed of Southern Nevada.
      1354320000
      Nov 30, 2012

      1.0 I would not buy this product again.

      Pros:

      Fast shipping

      Cons:

      Nose Piece Too Long,No Chrom Plating,Poor Threading,Razor Sharp Edge,Set Screw In Wrong Place,Poor Quality In General

      Comments:

      Lower edge of black tube was razor sharp. I used fine sandpaper to fix but why should I have to do this? Overall the machined quality was below par especially the threading.

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

      This review was provided courtesy of AgenaAstro.com

    2. Guest

      Skill Level
      Unknown
      Time with Product
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      User Notes:
      Review by Full Metal Ratchet of Tallahassee, FL.
      1331683200
      Mar 13, 2012

      4.0 Good quality for the price.

      Pros:

      Good price value

      Cons:

      Rough thread engagement

      Comments:

      The body machining is good and fits snugly in the focuser. The initial thread engagement for filters is a little rough.

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

      This review was provided courtesy of AgenaAstro.com

    3. Guest

      Skill Level
      Unknown
      Time with Product
      Unknown
      User Notes:
      Review by Yadba of Blue Springs, MO.
      1257724800
      Nov 8, 2009

      4.0 Only one minor complaint

      Pros:

      Affordable

      Cons:

      Nonstandard

      Comments:

      This extension tube was just what I needed after replacing my old rack-and-pinion "junk" focuser with a low-profile Helical Crayford focuser from Kine Optics. My only complaint is that the thumb screw that secures the eyepiece is too close to the top edge of the barrel. This difference makes it hard to secure eyepieces such as Vixen LVs that feature a "safety groove", since the misplaced thumb screw "misses" the groove.

      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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