William Optics
William Optics Zenithstar 61 II
William Optics Zenithstar 61 II
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Unleash your passion for the cosmos with the compact and powerful William Optics ZenithStar 61 II APO Refractor. Featuring top-notch Ohara FPL-53 ED glass, this telescope delivers clear, high-contrast images with minimal color aberration. Ideal for astrophotography and wildlife viewing, it boasts a quick f/5.9 focal ratio for broad, detailed sky scans.
Designed for portability and practicality, the ZenithStar 61 is equipped with a Vixen dovetail for easy mounting and a handle bar for convenient transport and setup. Its CNC machined aluminum body, available in Red, Gold, or Space Grey, houses a dual-speed 2" focuser for precise adjustments.
Enhanced with a Bahtinov Mask cap for sharp focusing and a soft case for effortless transport, this telescope is perfect for adventurers and stargazers alike.
- Lens Type
- Doublet APO Prime Lens
- Focal Length
- 360 mm
- Diameter
- 61 mm
- Focal Ratio
- f/5.9
- Image Circle
- 45 mm
- Focuser
- 2" R&P Focuser Compatible with EAF
- Focuser Travel
- 75 mm
- Adapter Included
- M54 → 2" Visual Back 2" → 1.25" Visual Back
- Optional Flattener
- FLAT 61A 1.0x FLAT 61R 0.8x
- Camera Format
- Full Frame APS-C M4/3
- Dovetail Type
- Vixen ↔︎ Arca-Swiss
- Tube Length
- 245 mm - 315 mm
- OTA Weight
- 2.2 kg / 4.85 lbs
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Research It
Find the product you want.
Talk to Us
Get expert guidance fast.
We Source It
Delivered within 4 weeks.
Enjoy It
Be happy with your gear.
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what we get asked most often
Are the prices all-inclusive?
Yes. The price you see is the price you'll pay. All taxes are included. Free shipping on all orders.
What's the stock status of the products on your site?
We list only in-stock items on our website that can be shipped right away. Sold out products are out of stock, so you can't place an order.
Selected products are available for Preorder, with a guaranteed delivery within 30 days or your money back.
How fast do you ship?
We process and ship all orders within two business days. Shipping time is determined by the speed of the shipping partner.
Is there a guarantee on your products?
Yes. On top of the manufacturer's warranty, we also offer a Replacement Guarantee on all online orders. In the event that the product is defective or damaged during shipping, you will receive a replacement.
Can I cancel my order?
We'll refund you 90% if you cancel before dispatch. Cancellations after dispatch are complicated. Take a look at the our Policy here
What's your return policy?
We have strict return/refund policies as a company that deals with fragile products. Casual returns are not permitted. Items that are not damaged in transit or defective cannot be returned.So please take a moment to review our Refund Policy.
Could I order something that's out of stock or not listed?
If you are interested in ordering an out-of-stock item, click the "notify me" button. You will be notified when the item is back in stock.
To source a specific product for you, our team needs more information. Specific orders will be subject to case-by-case terms and conditions.
