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Connect your 1.25" eyepieces or other accessories to 2" focuser of telescope: Turn the lock-ring and your eyepiece now sits firmly anchored in place. Your eyepiece no longer needs its safety groove as the adapter now clamps it over a large area of around 15mm.
Excellent 1.25" / 2" Twist-Lock Adapter: Best Companion In Astronomical Journey
Russell K McComb
2025-08-15 18:38:49
The part is very solidly built and the taper helps to hold it in the 2inch eyepiece hole. The way it locks on to the 1.25inch eyepiece is very nice.
MichaelM
2025-08-14 16:41:54
I needed a new 2" -1 1/4" adapter and on impulse bought this as it wasn't much more expensive than the cheap, simple ones. I am very pleased with the purchase and will get more now.I do astrophotography and need a secure mount for cameras, etc. being attached to the 2" focuser's. I have had a few accidents in the past when things fell out. This adapter is moderately low profile to not aggravate back focus issues. It is very secure (not falling out) on the 1 1/4" side. It is also well centered. The 2" side is slightly tapered to reduce the likelyhood of falling out. It works better than some of my "grooved ring" adapter, but they vary a lot so make sure it works with your stuff. It is a joy to just turn the ring to lock the 1 1/4 " accessory.
Jonathan
2025-07-11 18:16:52
I mainly use this for collimation w/ my cheshire. If the adapter is barely held in w/ the locking screws and the cheshire is loosely tightened it works great. Do not over tighten either of those or it wont hold straight. The one thing I do not like about it is that you have to really tighten it down to hold an eyepiece if like me your setup puts the focuser on the bottom of the tube.Love astromania products and will always be a customer
jr
2025-06-22 18:34:52
This 2 - 1.25 converter is well worth the money. The twist lock mechanism really shines compared to the usual simple thumb screw design. Spend the extra few dollars, it's worth it. This locks the eyepieces in place completely and keeps them centered. I highly recommend.
Errol
2025-06-15 15:36:33
I thought if I got this item that it would really be of help to me but I had to literally wring the life of it to tighten onto the eyepiece and that is with the eyepiece out of the telescope.I tried it attached to the 2" diagonal in place but it was near impossible to get the eyepiece tightened.I learn my lesson not to buy another like it again and stick to what you already is acquainted with.Other than that the material is of good quality. There are three slugs squeezing the brass internal ring for tightening. It slips into a 2" diagonal perfectly with the tapered end. The eyepieces slips into it very easily. As for usage that's already explained.
me4ku
2025-06-09 11:05:33
2" to 1.25. this fixed the alignment of laser to almost perfect but its a little loose in the 2" insert lust tighten the support screws lightly and the laser is almost dead center on donut on primary mirror. could have a little more metal on the 2" ..... my 2" to 1.25 insert is very tight. Then very lightly tighten the 1.25 on laser & lightly tighten the 2 screws that hold the 2" as its slightly loose in the 2" hole.. its a keeper!
M. P. Schiesl
2025-05-31 15:49:15
My orion dobsonian came with a crummy 1.25 adapter with a missing set screw. After trying to contact orion for a simple replacement screw for weeks, I decided to just get this instead.This gives a nice firm fit with both my 1.25 celestron zoom eyepiece, and with my xt8 telescope. The design is nice and the price was right. I recommend it you are looking for something like this. I believe the mechanism might be made of brass or some kind of softer material, to prevent scratching on your eyepieces. Not sure about that. And I really don't have any super-nice eyepieces where I would be worried about that anyways at this time. But a nice adapter at a good price.Been happy with any astromania stuff that I have gotten so far.
Norma Mireles-Smith
2025-05-19 13:55:24
I bought to use between my Baader sct thread to 2†clicklock and 1.25†Orion dialectic star diagonal.Problem;Twistlocks dont “clamp down very well on tapered eyepiece/assessors barrels.My Orion diagonal mirror has a tapered barrel and when inserted into the 1.25†eyepiece part the twistlock it could not clamp down and when the diagonal was loaded with the binoviewers and eyepieces. So as I needed to rotate the Bono’s via the baader clicklock it would constantly twist/rotate till the Bono’s were upside down it helpd a very little bit when I would pull the 2†portion out to the straight part of the barrel of the adapter. However no amount of fiddling around with the 1.25†barrel in the twistlock would hold the loadMaybe I’d all you had was an eyepiece might hold but one thing for sue this adapter/twistlock not designed for tapered barrels.I found and Antares twist lock claiming it’ll work on tapered barrels, I returned this to purchase the other so is I could find flat barrels for the diagonal it may be worth it.
Stuart Milligan
2025-05-01 11:04:53
Wanted this to see if it would make a difference to my collimation with my 8 dob. I think it works really well and has made a different holding my tools and lenses very centre.
NickoP
2025-04-26 18:22:26
Excellent adapter. The hold is firm and centered. Customer service is first class.
lynne hayes
2025-02-24 11:15:25
Just what I needed to help steady and center my collimators. There is no need to overtighten, just turn until the eyepiece is snug and it will be centered in the adaptor.
DiDef72
2025-02-16 09:24:55
Item meets specs and works well butShipping was terrible, cardboard box in which the item was placed in was ripped in pieces so the Adapter was loose in the bag and it felt like the bag was dragged on the floor so the adapter edges were all scratched.I will be returning the item and buy another one
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