Orion 5528 T-Thread Spacer Ring Kit

Pros: OK, you will need this kit for astro-imaging. It has three separately sized t-thread spacers that together make-up a complete t-adapter. I really only needed the smaller ring to connect my Orion filter wheel to the off-axis guider because the OAG threads too deep into the filter wheel on its own and stops the wheel from moving. But, I can already see that I will need the next size up for changing the focal length on a couple of upcoming images. So, totally worth having.Cons: When you see these and hold them in your hands, you will say to yourself, "Self, these are incredibly overpriced and obviously stamped-out in a plant in China, but I really needed them." That's the rub. I hate to say it, but, I'd still buy them again if I lost them, even for the price I paid.

If you're trying to connect your DSLR to your telescope then you're going to need these spacers to get the focus correct.These spacers are machines metal and will last. The three sizes mix and match to get the right distance for whatever your setup requires. Simple, easy to use, and a well manufactured product that will last.

A tad on the expensive side, but they thread smoothly and provide the additional spacing required for whatever you need to adapt. Threads are low-profile and fit smoothly and securely. 5-stars and two thumbs up!

A little pricey for what you're getting but well made, and frankly if you're using these to attache your camera to a telescope you almost need something like this. Considering others are even pricier Id recommend.

Great stuff!

These t-thread spacers have good threads and the knurled part makes getting them a part easier. They are lightweight but feel well made for what they are.

Essential for small format ccd cameras and off axis guiders.

It works perfectly with the Orions field flattener, the quality of the material, doesn't looks as nice as the flattener, but it does the job