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Blue Fireball Eyepiece Holder (2") with SCT Female Thread (SCT Visual Back) # C-01
| Brand | Blue Fireball |
| Part Number | C-01 |
| Availability | available |
| Share |
Product Info
Manufacturer Description
New, Improved Version - Now with 2 large thumbscrews for a more secure grip for heavy accessories.
This high-quality adapter connects to the rear cell of many Schmidt-Cassegrain telescopes made by Meade, Celestron and others. The standard SCT rear cell thread on telescopes is a 2" diameter x 24 TPI male thread. Using this adapter, you can attach 2" diagonals, photo adapters or other accessories to your SCT telescope. If you already have a standard 2" diagonal for your refractor telescope, you won't need a new SCT-type diagonal for your telescope! However, note that this adapter will not accept an SCT-threaded diagonal.
The practical adapter is made from precision machined aluminum and is black anodized. It includes a brass compression ring that clamps around the inserted eyepiece or accessory. Because the set-screw does not come in direct contact with the eyepiece, the eyepiece barrel will not be scratched or dented. The inside surface of this adapter is black-matted to enhance contrast by reducing stray light reflections.
Total length = 48mm (1.89"), Depth of eyepiece holder inside = 40mm (1.57"); Weight = 3.5 oz., Made in Taiwan.
Please note: A very small number of older Celestron SCTs had a non-standard SCT thread (with a different thread pitch), so this adapter may not screw on. We cannot advise you of this before purchase, as it will work for the vast majority of telescopes.
Reviews
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Scopejunkie Well-Known Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by Keith L.
Jun 2, 2019Blue Fireball 2” SCT visual back
Pros: Cons: Comments:The Blue Fireball 2” SCT visual back works great. But it would be better if they would add another screw hole to allow you to choose where to place the two set screws. When attaching the visual back to your rear opening, one of the two screw hole could lie right over your focuser, making it hard to use.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Aug 4, 2018First rate
Pros: Cons: Comments:This adapter works really well and is compatible with most SCTs - certainly all the ones I’ve owned. This is my second. Highly recommended if you want to use diagonals with barrels instead of screw on threads.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Aug 2, 20182" visual back for Schmidt Cassegrain
Pros: Cons: Comments:I received the order in two days. My old SCT had only a 1.25" visual back, which precluded the use of all my 2" eyepieces. This 2" visual back screws on easily, has two set screws with a brass ring to hold either a 2" diagonal or a 2" eyepiece. Well made, and works great.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jul 30, 2018Double Non-Maring Screws
Pros: Cons: Comments:Blue Fireball makes quality products at a reasonable price. This 2” Visual Back is high quality with double compression screws. Works perfectly with no issues. Agena is a top notch vendor.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
May 17, 2018Excellent product
Pros: Cons: Comments:This adapter works just as advertised. Tightening the 2 screws pushes against a brass insert to hold my 2-inch camera connection firmly without marring.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
talstarone New Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by William C.
Dec 20, 2017Simple Excellence
Pros: Cons: Comments:Well Made and very functional. I would compare it to adapters at twice the price. I have found that Blue Fireball products are well worth the money and the purchase.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Dec 9, 2017Very good 2" visual back for the money
Pros: Cons: Comments:This was just what I needed for setting up my new EdgeHD 800 for photography with a DSLR.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Nov 21, 2017Does the job well
Pros: Cons: Comments:Item as described. Does the job of allowing the use of 2-inch diagonal on my Nexstar 6SE. Always a good experience buying from Agena.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Mar 26, 2017Converted the SCT to accept 2" accessories.
Pros: Cons: Comments:I recently acquired an SCT but it came with the standard 1-1/4 visual back. I simply replaced it with this 2" adapter and it now works with the majority of 2" accessories I already own. The two tightening screws are my preferred configuration to securely hold cameras.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Mar 14, 2017Nice Visual Back
Pros: Cons: Comments:Good alternative to the standard visual back shipped with most units (particularly since it has the compression rings to protect accessories). Solid contruction. Use this for astrophotography work with a DSLR and 2” coma corrector. I also bought the 1.25” adapter to accompany this as my diagonal is 1.25”. Overall, very satisfied.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jan 12, 2017Good low budget SCT visual back
Pros: Cons: Comments:Like the compression ring and the fact that it has two fasteners to secure the diagonal. A good inexpensive fix to the problem of putting a 2 inch diagonal behind one of these scopes.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jan 5, 20172" SCT Visual Back
Pros: Cons: Comments:This adapter is just the thing to use a quality 2" diagonal with both my C8 and C6 SCT's. This visual back also makes it easy to re-orientate the EP if your OTA is on a german equatorial and the EP gets into an uncomfortable position. Qaulity of the Blue Fireball is top notch also.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jan 1, 2017Works as intended
Pros: Cons: Comments:I bought this adapter (along with a 2" to 1.25" adapter) to replace the OEM 1.25" eyepiece holder on my Celestron C5. It fits perfectly and holds my diagonal much more securely than the original part. The only point against this holder is that the lock screws need to be removed to screw the holder onto the C5, otherwise they hit the focus knob. This is a very minor complaint.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
May 13, 2016Excellent for C9.25 but threads don't fit my older C8
Pros:Lightweight,Strong Construction,Easy to Use
Cons: Comments:Wanting to use 2" eyepieces on my Celestron C9.25 with 2" diagonal, I read some pertinent input from a couple well known astronomy forums and began searching for the appropriate attachment. After finding several options, it didn't take long to realize that for the price, the Blue Fireball attachment with SCT threading was the most logical option. Lightweight, well-made, simple, and cost-effective, this attachment fit the bill perfectly. Unfortunately, the threads don't match the threads on my older C8, so can't be used with it. Since I leave it attached to the C9.25 when not in use, I wish it came with an end cap to keep dust out, but made my own. Other than that, it's perfect. And, as always, Agena is a top notch, reliable vendor.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jun 29, 2015Excellent Visual Back
Pros:Compact,Strong Construction,Lightweight,Easy to Use
Cons: Comments:I use this on my 8" SCT instead of the stock visual back. I also use the 2" to 1.25" adapter that fits it. With my 1.25" diagonal, this set up functions nicely and on an equatorial mount is easily rotatable with the compression rings. It is quality construction and very good price. Highly recommended.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Feb 22, 2015Excellent product
Pros:Lightweight,Compact,Strong Construction,Easy to Use
Cons: Comments:This is an excellent visual back for SCT telescopes up to 8". It is fairly short, so it will not increase the focal length too much compared to some other visual back options.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jan 8, 2015Well made but too short
Pros:Well Made
Cons:Too Short
Comments:Fit and finish of this visual back is very good. However the specified 2" eyepiece depth only describes the depth before the adapter's thread starts. The actual usable depth is dependent on the length of the threads on the scope. For my Edge HD 800, usable depth is less than the 34mm needed for my diagonal.
Bottom Line: Would you recommend this item? No
Some reviewers might not realize this is happening - it is too short by only a small amount, but it means the diagonal nosepiece will rest/wear against the scope's inner mating surface rather than the back of the visual back. Since that surface needs to be in good condition for other Celestron accessories, the adapter is useless to me.This review was provided courtesy of AgenaAstro.com
Oct 17, 2014Blue Fireball SCT Visual Back
Pros:Strong Construction,Accurate,Compact
Cons: Comments:I use the SCT Visual Back on my Celestron C6 to attach a CCD camera. It is great for that purpose and the two large thumbscrews help secure the load easily. A very well made products. BTW the service from the stuff at Agena was great too.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Aug 23, 2014Great addition to my telescope.
Pros:Strong Construction,Easy to Use,Lightweight
Cons: Comments:A refractor style diagonal, along with this eyepiece holder, is much easier to use on my SCT telescope than the SCT style diagonals.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jul 27, 2013Strong grip
Pros:Strong Grip
Cons:Small Thumb Screws
Comments:Has a really strong grip but the thumb screws are small. It would be easier to use if they were bigger.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
May 30, 2013Just what I needed!
Pros:Precision Fit,Easy to Use,Strong Construction
Cons:None
Comments:I use this to couple from the SCT thread of my focal reducer/corrector to the star diagonal. It fits with no slop, important when touching the diagonal to change eyepieces.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Feb 8, 2013My New Visual Back!
Pros:Strong Construction,Easy to Use,Lightweight
Cons: Comments:This has replaced my stock Celestron 8 visual back. I use 2 inch eyepieces only in my C8 and the lower powered ones can be a little heavy. My stock visual back would not hold them where I wanted them usually and the visual back would rotate and the eyepiece with it. My new Blue Fireball Visual back has no threaded ring like the Celestron back does so no slipping. Also, I just leave the Blue Fireball on the scope when storing it in it's case. It helps while taking the scope out of the case.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Dec 8, 2012Very well made part
Pros:Lightweight,Accurate,Easy to Use,Strong Construction
Cons: Comments:I use this between the focal reducer on my 8" SCT and Blue Fireball T-adapter on my Canon T3i. The fit is excellent and the machining is first rate (as with all Blue Fireball products I've bought).
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Nov 30, 2012Great Product, Good Price and Fast Service
Pros:Quality Construction,Easy to Use,Lightweight
Cons:None
Comments:I needed a 2" visual back for my Celestron 9.25" as I wanted to be able to use my MallinCam Universe CCD imager on this scope. The camera fits in a 2" focuser and the C9.25 only came with a 1.25" Visual Back. I Googled for a 2" Visual Back, came across this one and placed an order. It arrived quickly and it fit perfectly on the scope.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Nov 30, 2012Perfect for the Stellarvue SV50
Pros:Accurate,Compact,Strong Construction
Cons: Comments:If you get a SV50 from Stellarvue and want to use your existing 2" accessories, this adapter is a must have. Work perfectly and as it threads in the focuser there is no play whatsoever.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
dkuchta5 New Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by Astrogearhead of Rochester, NY.
Nov 21, 2012Quality product, reasonable price
Pros:Easy to Use,Strong Construction
Cons: Comments:I'm using this to allow me to use a 2" 2x barlow along with my DSLR to take high powered images of the planets with my 8" SCT. The two thumbscrews make for a very solid and stable connection without worries of the camera turning or falling out. The newer thumbscrews are large and substantial and allow for easy tightening. The construction quality is first rate with chamfered edges on the turnings, SCT threads that mate well and move smoothly, and a nice brass compression ring to eliminate marks on your gear from the thumbscrews. No downsides on this product!
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Sep 21, 2012Use 2" accessories with your C8
Pros:Easy to Use,Compact,Strong Construction,Lightweight
Cons: Comments:Inexpensive "must have" add on for any SCT. Use all 2" accessories with ease.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Jun 29, 20122" SCT Visual Back - Great Price
Pros:Lightweight,Compact,Easy to Use,Strong Construction,Price
Cons: Comments:Allows use of 2" accessories on 8" or smaller SCT telescopes. Well made with compression ring, not the usual set screws.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
May 13, 2012Excellent Product
Pros:Lightweight,Strong Construction
Cons: Comments:Product must have been redesigned after reading reviews. Thumbs screws are large and there's (2) two. Threads on my LX200 perfectly. I opted for free shipping and received it in (3) three days. Product is excellent, shipping was fast, I'll be back for more, thanks so much.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Dec 25, 2011AAA+++ for Blue Fireball Eyepiece holder
Pros:Accurate,Easy to Use,Strong Construction
Cons: Comments:Agena Astro Products is one of my top 5 for astronomy accessories.
Bottom Line: Would you recommend this item? Yes
Great People to deal with and would reccommend them for any product they sell.
If they do not have they will help you find it.This review was provided courtesy of AgenaAstro.com
May 3, 2010Cool flexible tool
Pros:Strong Construction,Compact
Cons:Heavy
Comments:Cool for SCT, you can put in accessories in zero angle or put some prism there..
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
May 1, 2010Well made quality piece
Pros:Compact,Accurate,Strong Construction
Cons: Comments:Excellent item, quality build. The only con is when used with a heavy eyepiece, (eg: axiom 31 mm) which is an extremely heavy piece, the clamping power of the unit is barely enough to hold the eyepiece in place, and can be moved with minimal force.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
ricka1 New Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by Ricka1 of Waynesboro, PA.
May 1, 2010Blue Fireball 2" SCT Visual Back
Pros:Strong Construction,Accurate
Cons:Difficult to Use
Comments:Work OK w/ my diagonals and seems to hold them adequately. The thumb screw that tightens the compression ring on the diagonal is way too small. It is dificult to adequately tighten the compression ring. This gets exciting when rotating the diagonal in the dark. Other than that it does the job nicely.
Bottom Line: Would you recommend this item? NoThis review was provided courtesy of AgenaAstro.com
Feb 11, 2010It does the job perfectly
Pros:Compact,Strong Construction
Cons:Small retaining screw
Comments:This is a simple well made adapter. It attaches on the back of the SCT (a Celestron C8 in my case) and allows relatively easy use of your 2" accessories. I say "relatively easy" because the retaining screw is rather small. I found one with a bigger "head" and replaced the original. The brass compression ring is the best part of it. Overall good solid one-piece construction and looks.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Feb 2, 2010Perfect
Pros:Strong Construction,Inexpensive
Cons: Comments:Works for what it does. Half the price of similar items that do the same thing.
Bottom Line: Would you recommend this item? Yes
Fits perfectly on my Celestron 11" SCT.This review was provided courtesy of AgenaAstro.com
Jan 18, 2010Good quality for great price!
Pros:Strong Construction,Good price value
Cons:Only one thumbscrew
Comments:I found that for my 8" SCT, the Televue 2" SCT adapter was too long, and the Televue SHORT 2" adapter was too short. This adapter is just right! Now I can use my fancy 2" diagonal and still look directly at the pole.
Bottom Line: Would you recommend this item? Yes
The piece is made of high precision machined aluminum with a good quality black anodized finish. There is a brass compression sleeve, but only one thumbscrew. I added a second thumbscrew myself...makes me feel better holding my big 2" diagonal and eyepieces.This review was provided courtesy of AgenaAstro.com
Nov 6, 2009Quality all the way
Pros:Accurate,Strong Construction
Cons: Comments:This item allows one to easily convert their SCT telescope to accept the highly-regarded 2-inch eyepieces which allow a wide field of view and exit pupil relief.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
May 28, 2009Excellent product
Pros:Strong Construction
Cons: Comments:I needed a 2" visual back for my 8" SCT, and this product is both relatively inexpensive and of excellent quality. It met my need fully.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
tjhayko New Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by Tom the telescope guy of Whitby, Ontario, Canada.
May 26, 2009Good product, great price
Pros:Accurate,Strong Construction
Cons: Comments:I bought this when the previous owner couldn't find the Televue SCT to 2" adapter that was supposed to come with my scope, and I don't see how any other adapter could be any better. It fits perfectly and holds my GSO 2" diagonal or my ELIM-T securely.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Oct 27, 2008Highly Recommended
Pros:Accurate
Cons: Comments:This is must have for SCT owners. You can use your 2" diagonal, or hook up your DSLR (with adapter of course) for prime focus AP. The thing I like best is I don't have to buy seperate accessories for my refractor AND my SCT. This cool little adapter saves you $$. Well built, and very inexpensive.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
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