Standard 1.25" Prime Focus T-adapter fits on any telescope that uses a 1.25" eyepiece focuser for prime focus photography.
To use, insert the 1.25" barrel into your diagonal or telescope, attach your D/SLR camera to the male T-thread (via a T-ring that is specific to your camera; not included), and you are ready to take photos as prime focus with your telescope or spotting scope. In this set-up, the optical chain will be:
Telescope/Diagonal > Prime Focus T-adapter (this item) > T-ring > D/SLR camera
The 1.25" barrel of this adapter is threaded to accept standard 1.25" filters so you can use your favorite photography filters as well. Precision machined from aluminum and black anodized. The adapter weighs 0.9oz and its total length is 1.34" (34.1mm).
The use of this adapter is not limited to D/SLR cameras. It can also be used to image with webcams and video cameras. For this, you will need to attach your webcam to the male T-thread on the adapter via a webcam-to-T thread adapter. Similarly, you can connect a video camera via a C mount-to-T thread adapter. This adapter cannot be used with point-and-shoot cameras.
Dec 13, 2018
Connect Nikon 1 - J5 to small Newtonian telescopePros: Cons: Comments:
Very nice, allows you to freely rotate the camera around to obtain the desired orientation rather than a straight screw on t ring connection which when snugged down arrives at a random orientation.
This review was provided courtesy of AgenaAstro.comDec 24, 2016
Blue Fireball T Thread AdapterPros: Cons: Comments:
The barrel of this T adapter allows me to mount my camera as close as possible to the eyepiece tube of my telescope and achieve prime focus without the use of a Barlow lens.
This review was provided courtesy of AgenaAstro.comAug 15, 2014
Strong Construction,Well Made,Lightweight,Easy to UseCons:
This is a quality product. The camera adapter part exactly fitted my Nikon D80 and the part that fits into the telescope exactly fitted into my old scope. The only problem I had with it was tightening the screws on my scope to hold it into position. This is a problem with my scope NOT the adapter. This is a well made piece of equipment and great value for money.
This review was provided courtesy of AgenaAstro.comDec 7, 2012
Well Made and Does the Job!Pros:
Easy to Use,Strong Construction,Lightweight,AccurateCons: Comments:
I purchased this to attach a USB filter wheel to my 2" focuser. I needed something simple that did not add to an existing back focus limitation. This adapter is well machined and anodized and works perfectly for my purposes.
This review was provided courtesy of AgenaAstro.comJun 30, 2012
Superb, with a catchPros:
Easy to Use,Strong Construction,Compact,LightweightCons:
I chose this T-thread adapter because it is nice and compact, without the unnecessarily long barrel of certain other T-thread adapters.
The aluminum construction feels very strong, yet it is lightweight, and the black paint job looks very sharp. The paint hasn't flaked or peeled yet after a dozen uses. The threads mate with the T-ring threads precisely.
One con for users of certain diagonals such as the one provided with Nexstar SE telescopes: the thumbscrews on these diagonals may not fully clear the flange of this t-thread adapter, preventing it from sitting flush against the diagonal.
This review was provided courtesy of AgenaAstro.com
gmartin02 New Member
- Skill Level
- Time with Product
- User Notes:
- Review by Greg of Santa Clarita, CA.
David Dearden New Member
- Skill Level
- Time with Product
Dec 25, 2011
- User Notes:
- Review by David, amateur astrophotographer of Mapleton, UT.
Inexpensive, Low Profile Camera AdapterPros:
Compact,Easy to Use,LightweightCons: Comments:
I knew I didn't have much back focus, so I chose this adapter. It works fine, but I was right about the back focus; I don't have enough, even with this piece, but it didn't cost much to find this out.
This review was provided courtesy of AgenaAstro.comMay 29, 2011
Simple and usefulPros:
Strong Construction,CompactCons: Comments:
I use this adapter with my DSLR camera for both Solar astrophotography (with my Coronado PST also bought here in AgenaAstro) and also, to use a difracting grid I got to get stellar spectra with my 8 inches reflector (also bought here :-) )
It is simple, inexpensive and does its job well.
This review was provided courtesy of AgenaAstro.comMay 28, 2011
Compact,Accurate,Strong ConstructionCons: Comments:
This adapter is professionally-made with excellent fit and function. I use this adapter for my Baader T-mount diagonal system (I previously had used only a 2" Baader T-nosepiece on the 2" diagonal). Now I can use my 2" diagonal in my refractors which only have a 1.25" focuser barrel. I suspect it would also work perfectly for prime-focus astrophography.
This review was provided courtesy of AgenaAstro.comDec 22, 2010
Top quality, well made partPros:
Accurate,Strong Construction,Cosmeticall beautiful,Precise machined tolerenc,CompactCons: Comments:
This is a highly precise machined product and it fits like a dream, and it just looks very good
This review was provided courtesy of AgenaAstro.comDec 19, 2010
An essential part of your kit.Pros:
Accurate,Strong Construction,CompactCons: Comments:
Anytime you use a telescope and want to preserve what you saw with your camera, you simply must have an adapter like this one. On my Meade 'scope, this inch and a quarter adapter slides nicely into my eyepiece tube, and with the matching ring to fit my Canon camera, lets me take pictures some people wouldn't believe.
This review was provided courtesy of AgenaAstro.comFeb 17, 2009
Just like an eyepiecePros:
Strong attachmentCons: Comments:
This is all you need to connect any reflex camera (with their respective T ring) to any 1.25 focuser, I have use mine a lot, I like to take pictures of the moon on the focuser of my dobsonian, and the results are great.
The chips of the modern cameras are so small that you do not need a 2"
This review was provided courtesy of AgenaAstro.comSort by