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Blue Fireball 1.25" to 2" Eyepiece Adapter # E-05
| Brand | Blue Fireball |
| Part Number | E-05 |
| Availability | available |
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Product Info
Manufacturer Description
This popular eyepiece adapter allows 2" eyepieces, diagonals, and other accessories to be used in 1.25" focusers, diagonals and barlows. Precision machined from black anodized aluminum, this premium adapter includes a brass compression ring that restrains the eyepiece and prevents marring of the eyepiece barrel by the metal set-screw. The lower barrel is threaded to accept standard 1.25" filters.
Total height = 2.35" (59.8mm). Height of upper 2" barrel = 1.53" (38.8mm). Height of lower 1.25" barrel = 0.8" (21mm). Weight = 3.1oz.
Please note that the use of extension/conversion tubes such as this item requires additional in-focus travel. If your eyepiece is fully seated in the 2" upper barrel, then you will require 1.53" of additional in-focus travel. If your eyepiece does not fully seat in the barrel and extends out, then you will require additional in-focus travel by the amount the eyepiece extends out. As in the case of barlows, focal reducers, diagonals, and other accessories, your telescope may or may not be able to accommodate this additional travel requirement, so you may not be able to reach focus with all eyepieces and configurations. That is technically a limitation of the mechanical design of the telescope and not a shortcoming of the product itself.
Also, it is possible that your view through some 2" eyepieces might be vignetted when used with this adapter because of the smaller 1.25" barrel in the light path. This will depend on your telescope and eyepiece combination and cannot be predicted in advance. However, many customers have successfully used this adapter with many 2" eyepieces, especially in the Meade ETX line of telescopes.
Reviews
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Jun 12, 2019
Nice Product
Pros: Cons: Comments:To find an adapter for the SBIG STL line to work with the Tak 60 refractor was a bit of a challenge but this baby works perfect. Solid construction. The STL is a heavy camera and that little 60 scope needed the right adapter.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Feb 11, 2019Works well
Pros: Cons: Comments:I got this to use a 2” barreled 18mm Explore Scientific 82 afov eyepiece with my Vixen 130 Newtonian which only has a 1.25” eyepiece barrel. It works great!
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jan 2, 2019Great Adapter
Pros: Cons: Comments:I use this to use my 2" eyepieces with a Coronado SolarmaxII scope that has a 1 1/4" diagonal. Works well and it is well made, Of course you wont get the full 2" eyepiece experience but you will get the comfort of using your favorite eyepieces.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Feb 28, 2017Very handy adapter
Pros: Cons: Comments:Very well made and finely finished black anodize. Securely holds your pricy 2" optics and allows their use in scopes with 1.25" ports. Works well.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Oct 17, 2014Eyepiece Adapter
Pros:Lightweight,Compact,Accurate,Easy to Use,Strong Construction
Cons: Comments:Bought this so I could use some of my 2 inch filters on a 1-1/4" eyepiece holder.
Bottom Line: Would you recommend this item? Yes
I screw the 2 inch filter onto a 1-1/4" to 2 inch eyepiece adapter holder and insert it in this adaper with a 1-1/4" eyepiece. You could also use 1-1/4" filters with 2 inch eyepieces with this adapter on a telescope that doesn't allow the use of 2 inch eyepieces.This review was provided courtesy of AgenaAstro.com
Sep 5, 2014An unusual purpose...
Pros:Strong Construction,Compact,Accurate,Lightweight,Easy to Use
Cons: Comments:I obtained a couple of very large Japanese-made Barlow lenses (for photographic lenses) that are of higher-quality than many that are made for Astronomical purposes. The problem was how to use even one of them because there was no housing that would mount in the optical train of my telescopes, just the bare lens in a threaded aluminum barrel, (and I don't have a lathe to make a housing.)
Bottom Line: Would you recommend this item? Yes
The 2 inch ID of the adaptor allowed the Barlow to fit perfectly inside, on plane and optical axis, and it was done! Spectacular views, with no edge-distortion or crunching!This review was provided courtesy of AgenaAstro.com
Sep 24, 2012Great product!
Pros:Lightweight,Compact,Accurate,Perfect Fit,Strong Construction,Easy to Use,Quality Lenses
Cons:None
Comments:Great fit on all of my lenses and filters.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jun 30, 2012Simple, necessary.
Pros:Strong Construction,Accurate,Easy to Use,Lightweight
Cons: Comments:Adapters are essential to utilize all the variations of products possessed by anyone who has been involved in visual astronomy for more than a decade, or so. This item does its job.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jun 29, 2012Stable, well-made product
Pros:Easy to Use,Compact,Strong Construction,Excellent fit to focuser
Cons: Comments:Worked extremely well to mate a DSLR camera to ETX-90 telescope. Set up to observe the transit of Venus, no problems focusing the camera from near to infinity.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Nov 5, 2011Hard to find adapter finaly found
Pros:Strong Construction,Easy to Use,Accurate
Cons: Comments:I finaly found a way to use some of my two inch accessaries with a one and a quarter inch focuser. Like a two inch diagnal and some two inch eye pieces. Most adapters reduce down in size. I could not find this combination any were until I found the Blue Fireball adapter from Agena Astro Products. I think it was a great find and is made very well. Thanks for providing me with more options.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
gazer New Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by Seppo Kouva of Trollhttan, Sweden.
May 8, 2010My eypiece adapter 1.25
Pros: Cons: Comments:I'm using this item to my selfmade 2" adapter where I have my Vixen tele-extender V3631, so I can dubbel the magnifying in my 2" eyepices in 1.25" hertchel prism. And it works GREAT, thanks to this eyepice adepter. Thanks to you Agena AstroProducts! Regards Seppo Kouva
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jun 26, 2009Nice accessory for any 1.25" focuser
Pros:Good design,Strong Construction,Nice Finish
Cons: Comments:I originally purchased this to use in an ETX-125 focuser with 2" eyepieces but it works well in my other 1.25" focusers too. The brass compression ring is also a very nice touch.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
May 28, 2009Great accessory for ETX scopes
Pros:Strong Construction
Cons: Comments:This adapter has made a great scope even more enjoyable. With 2 inch EPs the ETX 125 can really shine. Solid construction and ease of use combine with a great price to this adapter an excellent value. If you have 2 inch EPs and an ETX give it a try.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
prc1950 New Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by prc1950 of Iowa.
May 26, 2009Worked great in ETX 90
Pros:Allows use of 2
Cons:Non
Comments:Allows use of some 2" eyepieces for the Mead ETX series and probably others, although I have no experiance other than what I have tried.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
May 26, 2009Does what it's supposed to do
Pros:Strong Construction
Cons:Difficult to Use
Comments:I use this device to bridge between a 2" H-Alpha solar filter assembly and a 1.25" telescope focuser.
Bottom Line: Would you recommend this item? Yes
The only problem I have with this device is that the knurled screw that it uses to hold the 2" lens in place is a bit short and it is difficult to tighten and loosen it if you have big fingers, like me. If that were a little longer, I would have no complaints whatsoever.This review was provided courtesy of AgenaAstro.com
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