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GSO Chrome Barrel from 2" GSO Refractor Diagonals

4.9 (15 Reviews) Read Reviews Write Review
Brand GSO
Part Number FF060
Availability available

Product Info

Manufacturer Description

Do you have a 2" GSO SCT diagonal (standard, dielectric or quartz) that you want to use with a refractor but cannot? Here is the solution you need!  You can simply unscrew the SCT adapter on the telescope end of your GSO SCT diagonal. Then insert this barrel in its place and you can now use your SCT diagonal in 2" refractor focusers.

This adapter has a standard SCT male thread (2", 24 TPI) to connect to the GSO diagonal body on one side. The other (telescope) side has a standard 48mm (M48 x 0.75) female thread so it can accept 2" astronomy filters. The barrel is made of aluminum and the inside is threaded and painted flat black to minimize internal reflections.

This adapter will work with the following diagonals:
- All 2" GSO diagonals
- Some 2" diagonals made by GSO for Celestron, Antares, Burgess, SmartAstronomy, TS (Germany), OPT, and others

This adapter will not work directly with the following diagonals:
- All William Optics diagonals
- Many other Meade, Celestron, Antares and other diagonals

There is no standardization in the astronomy industry for the threads used on diagonal bodies. Hence, do not assume that this adapter will work with your diagonal. Please check the thread on your diagonal body before ordering this item - we do not have compatibility information for all the diagonals out there.

Reviews

4.9 (Based on 15 Reviews) 100% of reviewers recommended this product.
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    1. Guest

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      Review by John A.
      1482775950
      Dec 26, 2016

      5.0 Choosing the right adapter

      Pros:

      Cons:

      Comments:

      If you are looking at the this adapter, then you are probably trying to retrofit an existing telescope. Make sure you pay attention to the thread pitches and diameter, the actual outside diameter of the nosepiece, the length of the nosepiece and the placement of the “safety groove”. The locking screw of my refractor’s focusing tube was landing on the shoulder of the “safety groove” which meant going with the “no safety groove” version of this adapter.

      If this is the right adapter for you then I would say it is an excellent choice. The adapter is well made with a fine finish. The inside diameter of my telescope’s focusing tube is two inches measured to within two thousandths of an inch. The outside diameter of the adapter’s nosepiece is less than this by only a few thousandth’s of an inch, which I find to be perfect.

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

      This review was provided courtesy of AgenaAstro.com

    2. Joseph Goins

      Joseph Goins New Member

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      Review by On the Edge of the Known Universe of Needles, CA.
      1443312000
      Sep 26, 2015

      5.0 Worked great with Orion 2 inch SCT Diagonal

      Pros:

      Easy to Use,Well machined

      Cons:

      Comments:

      I added it to an Orion 2" SCT Diagonal. I had a spot of trouble getting the SCT nosepiece off. I put it in the warm desert sun for about 30 minutes and it came apart easily. The refractor nosepiece was very well machined and screwed in smoothly. It easily tightened up enough to keep the diagonal from rotating about the nosepiece. It slid effortlessly into my GSO 2" refractor focuser but without a lot of slop or play. The inside of the nosepiece is threaded for two inch filters and is nice and black on the inside.

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

      This review was provided courtesy of AgenaAstro.com

    3. Jesús Muñoz

      Jesús Muñoz New Member

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      Review by Jose of Queretaro, Mexico.
      1422662400
      Jan 30, 2015

      5.0 Great quality

      Pros:

      Easy to Use,Strong Construction

      Cons:

      Comments:

      Great for connecting my Celestron reducer behind my Feathertouch focuser.

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

      This review was provided courtesy of AgenaAstro.com

    4. Live_Steam_Mad

      Live_Steam_Mad New Member

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      Review by Alistair G. of St. Helens, England, UK.
      1408838400
      Aug 23, 2014

      5.0 Fits my Revelation 2" SCT diagonal

      Pros:

      Easy to Use,Lightweight,Strong Construction,Accurate

      Cons:

      Comments:

      I ordered this in Aug 2014 so that I could turn my very recently bought-from-new Revelation 2" Quartz SCT diagonal into a refractor diagonal (my Revelation diagonal is a GSO item rebranded, I am almost certain of that). The Chrome barrel arrived promptly from Agena in USA (I am in England) and I tried it and it fits great into my Relevation diagonal. When my diagonal first arrived it was impossible to remove the SCT nose piece from it with just my hands. I simply put the diagonal onto my Meade 7" Maksutov and was then able to fairly easily unscrew the SCT part off the diagonal. Then I screwed on this GSO 2" Chrome barrel, it screws on easily and accurately with no binding or problems. It holds on as tightly as you want with no issues. All ready for trying with my Meade SN102 (DS2102 / StarNavigator 102), I now need the 2" adapter ring (which Meade does not include) to make my SN102 compatible with 2" eyepieces. Other refractors with 2" eyepiece compatibility would need no other parts and it just pushes straight into a 2" focusser. Recommended.

      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 Edison of Sydney, AU.
      1408233600
      Aug 16, 2014

      4.0 Great if you have a refract or SCT scope

      Pros:

      Easy to Use,Accurate,Strong Construction,Lightweight

      Cons:

      Comments:

      I ordered this so I can use my current SCT diagonal on my refractor. It works as described, can't complain.

      It also works great on Baader clicklocks.

      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 DG of Clarksville, MO.
      1341100800
      Jun 30, 2012

      5.0 An Unexpected Surprise!

      Pros:

      Strong Construction,Lightweight,Easy to Use

      Cons:

      Comments:

      I had purchased a GSO 2" Diagonal with a direct connect adapter for my C8 to minmize back focus distance and retired my big Crayford focuser.

      However, I later upgraded to an Ultima 11 with greater back focus distance and resurrected my Crayford focuser...but what to do about the Diagonal?

      Agena presented to me this inexpensive GSO optional refractor barrell and it worked great.

      Problem solved, thank you Agena!

      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 AhBok of Tennessee.
      1320451200
      Nov 4, 2011

      5.0 Works great!

      Pros:

      Lightweight,Strong Construction,Accurate

      Cons:

      Comments:

      I purchased this to convert my GSO SCT diagonal to a refractor type diagonal. This increases the nosepiece opening by several millimeters allowing unvignetted use of eyepieces with very large field stops.

      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 pierre007 of Rio Rancho, NM.
      1307750400
      Jun 10, 2011

      5.0 Excellent Product

      Pros:

      Strong Construction

      Cons:

      Comments:

      Good construction.

      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 Mike of Fort Collins, CO.
      1307491200
      Jun 7, 2011

      5.0 GSO Chrome Barrel

      Pros:

      Accurate

      Cons:

      Comments:

      High quality and works right off the bat. If you need a 2" nose piece, this is it. These are critical, as no one besides GSO supplies these.

      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 Astrocat12 of Seguin Texas.
      1306713600
      May 29, 2011

      4.0 Worked to transform my Celestron #93519

      Pros:

      Strong Construction

      Cons:

      Comments:

      Used this with GSO Crayford Focuser for SCT

      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 Ace of Space of Miami, Florida.
      1306627200
      May 28, 2011

      5.0 Increases usability of GSO Diagonals!

      Pros:

      Compact,Solid construction,Typical GSO quality item,Accurate,Strong Construction

      Cons:

      None

      Comments:

      Like many others, bought this adapter to use my GSO SCT 2" Diagonal in 2" refractor focuser. Thank you, Agena!

      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 Triple T of St Clair Shores, MI.
      1306627200
      May 28, 2011

      5.0 Good price

      Pros:

      Cons:

      Comments:

      I used this to mount a off axis guider in a 2" crayford focuser, it does the job perfectly and Agena always has what I need at a lower cost than the competitors, I recommend Agena astro to all my friends

      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 Stargazer of Tucson, AZ.
      1301443200
      Mar 29, 2011

      5.0 Easy conversion fron SCT to Refractor

      Pros:

      Accurate,Strong Construction

      Cons:

      Comments:

      I recently purchased a WO erect image 2 inch diagonal for my refractor from Agena. The WO threads also fit my optics pro diagonals but not my orion 2 inch sct diagonals. So I ordered a GSO chrome barrel and found they fit perfectly. The quality is excellent and I saved a bunch of money not having to purchase another diagonal. I can now easily use one diagonal for both scopes.

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

      This review was provided courtesy of AgenaAstro.com

    14. scopeboy42

      scopeboy42 New Member

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      Review by Scopeboy42 of Raleigh, NC.
      1250294400
      Aug 14, 2009

      5.0 Great Idea for a SCT Diagonal

      Pros:

      Strong Construction

      Cons:

      Comments:

      Just purchased a nice refractor with a 2" focuser. The only 2" diagonal I had was a nice GSO enhanced coating SCT version for my LX10. By purchasing the GSO chrome barrel my diagonal now works on both scopes. You just have to unscrew the SCT nosing on the diagonal then screw in the GSO barrel. Takes about 10 seconds. Quality construction. Saved me money too.

      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 Fritzo130 of Columbia, MO.
      1243382400
      May 26, 2009

      5.0 Excellent Quality

      Pros:

      Compact,Strong Construction,Accurate

      Cons:

      Comments:

      I was not sure if this would fit my Orion ED80, but a quick e-mail to Agena prompted a quick response back that assured it would.

      The inside is coated in flat black so there are no reflections. It is very sturdy and has a nice tight fit.

      I put a lot of weight on it (focal reducer, diagonal, spacer, filters, and camera) and it does not wiggle at all. Thus, there is no flexure in the system.

      A great product.

      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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