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Navigating Tariffs: Due to the current volatile tariff environment and associated logistics challenges, O'Telescope is unable to fulfill shipments to the United States. Orders submitted with a U.S. shipping address will be refunded, with the payment gateway transaction fee deducted. This restriction does not affect BackyardEOS or BackyardNIKON, which remain available as digital downloads.
Inventory closeout sale, everything must go. Up to 35% off. Some conditions apply.
We are closing our inventory side of the business and focusing solely on software - going back to our roots so to speak. No store coupons required, all prices have been marked down. First come, first served, until quantities last. We are no longer placing orders with manufacturers. Absolutely no rain checks. We reserve the right to cancel and refund orders at our sole discretion. We do our best to maintain our inventory accurate, but mistakes do happen, if you purchase an item that is no longer in stock, you will be refunded. The sale does not apply to some higher-end items such as 10Micron. Prices subject to change without notice. ALL SALES ARE FINAL.
Occasionally, we find a box under a box under a box in the back of the warehouse with hidden treasures, and when we do, we add these items on the site, so even though you may not find what you're looking for today, it could automagically appear next week.
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ZWO Optical - ALMOST SOLD OUT
3 products
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![ZWO Canon EOS Lens Adapter for ASI1600 & EFW [ZWO-EFW-EOS-II-CLEARANCE]](https://www.otelescope.com/uploads/monthly_2017_08/zwo-efw-eos.jpg.c3782863c4f0ea017bab62864090fcb7.jpg)
ZWO Canon EOS Lens Adapter for ASI1600 & EFW [ZWO-EFW-EOS-II-CLEARANCE]
$53.77 CAD$76.81 CAD1 in stock On saleBack Order / Waiting ListZWO Optical: This ZWO EOS Lens Adapter will allow you to mount Canon EOS lenses to the ZWO EFW Electronic Filter Wheel, which would, in turn, be mounted to the ZWO ASI1600 camera.
Designed especially for the ASI1600 and EFW, this thinner EOS Lens Adapter has a T2 thread on the camera side and a female EOS bayonet mount on the lens side.
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![The ZWO new EFW-Nikon-Ⅱ adapter [ZWO-EFW-NIKON-II-CLEARANCE]](https://www.otelescope.com/uploads/monthly_2020_10/ZWO-NIKON-II-Adapter.jpg.c0526446960cbc6905f1a5beaa08bb86.jpg)
The ZWO new EFW-Nikon-Ⅱ adapter [ZWO-EFW-NIKON-II-CLEARANCE]
$74.29 CAD$106.13 CAD2 in stock On saleBack Order / Waiting ListZWO Optical:
The ZWO new EFW-Nikon-Ⅱ adapter with 20mm thickness design is independently developed by ZWO. It’s suitable for connecting Nikon lens and ZWO 1.25”/31mm/36mm filter wheel.
The thread of the interface is M42*0.75 so it cannot be connected to 2” EFW.
It can only match with ASI cooled cameras with 6.5mm back focus length.
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![ZWO 78MM ASI HOLDER RING [ZWO-NEWRINGD78-CLEARANCE]](https://www.otelescope.com/uploads/monthly_2019_05/ZWO-RINGD78_Holder-Ring-86mm_8d6c580d-65dd-4619-b15f-1f7b48535ea9_1024x1024.jpg.ce97d211311fabcc3b1fbc5fa04eaf2f.jpg)
ZWO 78MM ASI HOLDER RING [ZWO-NEWRINGD78-CLEARANCE]
$53.77 CAD$76.81 CAD1 in stock On saleBack Order / Waiting ListThis is ZWO's New Holder Ring for ASI Cooled Cameras has an internal diameter of 78 mm and is suitable for cameras with outside diameters less than 78 mm.
There is one M6 screw on the side of the holder ring, loosen the screw and easily mount the camera to your tripod.
