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Blue Fireball Eyepiece Holder (1.25") with T / T2 Female Thread (T2 Visual Back) # E-10

4.9 (26 Reviews) Read Reviews Write Review
Brand Blue Fireball
Part Number E-10
Availability available

Product Info

Manufacturer Description

This Blue Fireball adapter allows you to attach 1.25" eyepieces and accessories to any equipment/adapter that has a male T thread (T2 mount). Common examples are telephoto lenses (which can be converted into excellent finder telescope with the use of this adapter, spacers, and an eyepiece), T thread adapters, off axis guiders, etc. Some Maksutov-Cassegrain telescopes use a male t-thread on their rear cell, so you can use this adapter as a 1.25" visual back for such scopes.

This high quality adapter has a T2 female thread on one end and a 1.25" eyepiece barrel on the other end. Eyepiece barrel features brass compression ring. Made of black anodized aluminum. Total length = 29mm (1.14").

Blue Fireball part number: E-10

Reviews

4.9 (Based on 26 Reviews) 96% of reviewers recommended this product.
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    1. Guest

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      Review by Diego G.
      1545361072
      Dec 20, 2018

      5.0 Product arrived on time and

      Pros:

      Cons:

      Comments:

      Product arrived on time and well packaged

      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 Lior S.
      1545237931
      Dec 19, 2018

      4.0 Blue Fireball Eyepiece Holder (1.25") with T / T2 Female Thread

      Pros:

      Cons:

      Comments:

      Very nice item.
      The only downside, it does not come with a plastic dust cap.

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

      This review was provided courtesy of AgenaAstro.com

    3. csquared

      csquared New Member

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      Review by Conrad C.
      1544786977
      Dec 14, 2018

      5.0 Works well

      Pros:

      Cons:

      Comments:

      I attached it to an OAG to help with focusing. It made the OAG easier to use.

      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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      Review by Bill W.
      1538232853
      Sep 29, 2018

      5.0 Well made device

      Pros:

      Cons:

      Comments:

      Easy to use that saves time.

      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 Gennaro B.
      1518220448
      Feb 9, 2018

      5.0 Eyepiec3 holder with t2 thread

      Pros:

      Cons:

      Comments:

      Threads on and off smoothly. Finish is nice. Compression band works well. Thumb screws are made well.

      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 Frank M.
      1517330827
      Jan 30, 2018

      5.0 Excellent product for visual use

      Pros:

      Cons:

      Comments:

      Excellent product for visual use with my Celestron OAG.

      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 Raymond T.
      1495036459
      May 17, 2017

      5.0 A valuable piece for the t adapter series

      Pros:

      Cons:

      Comments:

      I use it to mount my CCD on the end of my variable eyepiece projection Tmount tube.

      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 R S.
      1491078195
      Apr 1, 2017

      5.0 Stuff That Works

      Pros:

      Cons:

      Comments:

      Blue Fireball parts are well made and utilitarian. This one is no exception. Two screws are more secure when this component is used with a diagonal.

      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 Les of Australia.
      1412812800
      Oct 8, 2014

      5.0 Blue Fireball Eyepiece Holder (1.25")

      Pros:

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

      Cons:

      Comments:

      This eyepiece adaptor is robust and solid enough to provide great security for my eyepieces and stability for using further adaptors in my imaging train. They remain light enough not to add to much additional weight to my system. The internal compression ring protects my eyepiece barrels from lock screw damage. Perfect for the price and great quality! I always shop with Agena for all my adaptors. Such a great range at excellent prices.

      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 Raymo of Calgary.
      1410134400
      Sep 7, 2014

      5.0 Excellent Product

      Pros:

      Easy to Use,Lightweight,Strong Construction

      Cons:

      Comments:

      The built-in insert brass tightening ring is a definite plus on this unit. Goes easy on my lenses and other accessories.

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

      This review was provided courtesy of AgenaAstro.com

    11. LewC

      LewC Well-Known Member

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      Review by Oldschool Amateur Astronomer of Northridge, CA.
      1409961600
      Sep 5, 2014

      5.0 I'd buy this product again.

      Pros:

      Easy to Use,Works as advertised

      Cons:

      Comments:

      Replaces the stock eyepiece holder w/setscrew with one that employs a non-marring, more secure clamping ring.

      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 jimmya of Gibraltar.
      1408147200
      Aug 15, 2014

      5.0 Very good construction, good feel to it.

      Pros:

      Compact,Accurate,Lightweight,Strong Construction

      Cons:

      Comments:

      I used this eyepiece holder for my off axis guilder and it works very well, very good construction, good feel to it.

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

      This review was provided courtesy of AgenaAstro.com

    13. Guest

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      Review by Newt Reno of Minnesota.
      1386547200
      Dec 8, 2013

      5.0 Nice adapter

      Pros:

      Easy to Use,Lightweight

      Cons:

      Comments:

      I purchased this for my Celestron C90 newer model in order to be able to use my quality 1-1/4" diagonal without scratching the barrel, therefore allowing me to not scratch my eyepiece barrels......this threads right onto the T2 threads of the C90 supplied visual back, increasing the focal length by a bit, but not affecting my use of the scope.

      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 Evhap of Kensington, CA.
      1385769600
      Nov 29, 2013

      5.0 An excellent low-cost, light-weight adapter

      Pros:

      Compact,Easy to Use,Lightweight,Strong Construction

      Cons:

      Comments:

      This is really an excellent compact, lightweight, and economical adapter. Its compression ring makes it superior to the similarly priced Baader economy adapter. Although not as elegant as the Baader click-lock adapter, it has a much friendlier price tag. I use it with a Baader Herschel solar wedge, and it handles Tele Vue Delos eyepieces just fine.

      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 MrSmiley of Perth, Australia.
      1380758400
      Oct 2, 2013

      5.0 Perfect Companion to Agena Filter Wheel

      Pros:

      Strong Construction,Lightweight,Easy to Use

      Cons:

      Comments:

      I use it with the Agena Filter Wheel and works like magic along with the Blue Fireball Gender Changer: T / T2 Male-Male Thread Adapter # G-TM. Plus anytime you have an accessory without Compression Rings on the eyepiece adapter this becomes a must for the protection of eyepieces from nasty scratches.

      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 MrSmiley of Perth, Australia.
      1377561600
      Aug 26, 2013

      5.0 Well Built and Solid, Very Practical!

      Pros:

      Accurate,Easy to Use,Strong Construction,Lightweight

      Cons:

      Comments:

      With the proper adapter this can be used with any 1.25" Accessory to Secure and Protect your Eyepieces. I purchased the "Agena 1.25" 5-Position Manual Filter Wheel" and needed to replace the Eyepiece holder with a holder that has a Compression Ring, I used the "Blue Fireball Gender Changer: T / T2 Male-Male Thread Adapter # G-TM" in combination with "Blue Fireball Eyepiece Holder (1.25") with T / T2 Female Thread (T2 Visual Back) # E-10" and it worked wonderfully.
      Compressions Rings are a must for the protection of eyepieces from nasty scratches.

      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 JHolland of Abilene, TX.
      1375056000
      Jul 28, 2013

      5.0 Excellent accessory

      Pros:

      Easy to Use,Strong Construction,Lightweight

      Cons:

      Comments:

      I bought this to use on a flip mirror diagonal in order to decrease the focus for a 20mm eyepiece. The eyepiece holder works beautifully.

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

      This review was provided courtesy of AgenaAstro.com

    18. Guest

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      Review by Karen of Marksville, LA.
      1374969600
      Jul 27, 2013

      5.0 I would buy this product again.

      Pros:

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

      Cons:

      Comments:

      Great product, secures your eyepieces better than straight screw and does not mar the eyepiece tube.

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

      This review was provided courtesy of AgenaAstro.com

    19. Angel

      Angel New Member

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      Review by Angel of Puerto Rico.
      1369958400
      May 30, 2013

      4.0 I recommend it to all

      Pros:

      Easy to Use,Strong Construction

      Cons:

      Comments:

      It is a great product for its compression ring

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

      This review was provided courtesy of AgenaAstro.com

    20. Guest

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      Review by Steve of Australia.
      1368144000
      May 9, 2013

      5.0 Nice eyepiece holder

      Pros:

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

      Cons:

      Comments:

      Great eyepiece holder replace the stock Meade one.

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

      This review was provided courtesy of AgenaAstro.com

    21. Guest

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      Review by desertlens of Northern NM.
      1364256000
      Mar 25, 2013

      5.0 Blue Fireball Components

      Pros:

      Accurate

      Cons:

      Accurate

      Comments:

      I've acquired a number of Blue Fireball components from Agena. All have been positive experiences. This EP holder is no different. Machining (turning, threads and knurling) is always well executed. Finishes are utilitarian and well applied. In addition, kudos to Agena for maintaining a line of this nature. Some of these parts are difficult to find elsewhere.

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

      This review was provided courtesy of AgenaAstro.com

    22. Guest

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      Review by JimmyA of Gibraltar.
      1360540800
      Feb 10, 2013

      5.0 I would buy again

      Pros:

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

      Cons:

      Comments:

      Easy to fit, works really well as it stops marking all the bottom of my lens or accessories that I fit to my scope .

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

      This review was provided courtesy of AgenaAstro.com

    23. Guest

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      Review by Chuck Hunt of Brook Park, Ohio.
      1360368000
      Feb 8, 2013

      5.0 Eyepiece Holder

      Pros:

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

      Cons:

      Comments:

      I got this for use on my T thread star prism diagonal to get a little more in focus distance compared to the previous holder. Very pleased with it.

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

      This review was provided courtesy of AgenaAstro.com

    24. Guest

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      Review by Paul of Stratford, CT.
      1360368000
      Feb 8, 2013

      5.0 Upgrade For My Refractor's Visual Back

      Pros:

      Compact,Easy to Use,Lightweight,Strong Construction

      Cons:

      Comments:

      I have a 1980's era Vixen refractor with a 43mm drawtube. Its single point locking screw is not sufficiently secure for today's heavier eyepiece/diagonal combinations.

      I removed the OEM visual back and replaced it with a Baader T2-22 # 1508037 adapter. Then threaded this eyepiece holder onto the Baader T2 threads. What you end up with is a strong compression ring fitting that will securely hold heavier diagonals and eyepieces without marring their barrels.

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

      This review was provided courtesy of AgenaAstro.com

    25. Guest

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      Review by Jorge of Chihuahua, Mexico.
      1339027200
      Jun 6, 2012

      5.0 Excellent accesory to astrophotography!

      Pros:

      Cons:

      Comments:

      Im happy to own this Blue Fireball adapter that it's very similar to the Lumicon Female T-Thread - 1.25" Female Adapter. It threads onto male T-Threads and accepts 1.25" eyepieces and accessories or ideal to the OAG, Filter Wheel and adapters for direct photography. In my opinion it is a better accesory and by for economic than another. I'm happy to own this.

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

      This review was provided courtesy of AgenaAstro.com

    26. Guest

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      Review by Gus of Boston, MA.
      1330128000
      Feb 24, 2012

      5.0 Useful with an off-axis guider

      Pros:

      Cons:

      Comments:

      I purchased this T-thread eyepiece holder shortly after I started using an off-axis guider. I'm using a Starlight Express Lodestar autoguider, which is a 1.25" cylinder which fits neatly into this eyepiece holder. I also tried a T-thread to C mount adapter, but I found this was just as firm and gave me more flexibility for adjusting focal distance.

      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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