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Astronomical T2-Extension Tube Kit for Cameras and eyepieces - Length 8mm 10mm 20mm 40mm - M42x0.75 on Both Sides
Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners
Lightweight Quality
The mass of the extensiontube kit does not exceed 80g in total, making it easy to carry.
Sturdy and Durable
Rugged and durable construction with an overall matte frosted finish prevents light reflection from affecting imaging.
Metal Material
Made with high quality aluminum oxide to prevent corrosion and wear and tear over time.
Multiple Components
Consisting of a variety of extension tube of different lengths, you can choose the length that best suits your needs when observing.
Multiple Sizes For You To Choose From!
Glennallen Helitack
2025-05-22 17:43:01
I was actually surprised with the quality! I was having trouble getting any extensions and seen these. I figured I’d make do with these until I could find other more solid units. Well, surprise- surprise. These will work just fine.Thanks for a quality product with out the $ gouging!
Bryan
2025-04-06 11:44:00
ZWO ASI 678 MC -to- Baader Hyperion Mark 4....Darn lens had a M43 thread and Camera M42 ...Planned of course.(also ordered the M43 -to- M42 adapter)Didn't get this extender yet but. Just purchased the Hyperion which has a ton of thread options so it would be nice to hook my camera to it for the telescope. Of course these cameras also require a backfocus length (camera sensor from telescope). I measured 1 7/16" (converted to mm) = 38mm. So 20, 10, 8 = 38mm . Not sure why camera says 12.5 mm backfocus but a simple tape measure still gave me a working measurement. ---- Telescope experts assured me this will do. Figured why chance it and have not the required backfocus distance.
spiderweb
2025-03-03 17:15:51
Nice solid metal construction, accurate threads. a good start to getting correct back-focus distance.
Shaun
2024-11-16 16:36:49
Feels like quality. Precision cut. Threads easy.
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