William Optics RedCat 71 APO Petzval OTA (T-C-71)
William Optics RedCat 71 APO Petzval OTA (T-C-71)
Why Purchase from All-Star Telescope?
Free Expert Support
Whether you are a first timer needing help with setting up or an enthusiast that can't quite make that one thing work, our expert staff are ready to support your needs. With decades of knowledge and first hand experience we've been there and we can help you through it!
Stress Free, Secure Transactions
You can trust purchasing and delivery with All-Star Telescope. All of our transactions are 100% secure and Level 1 PCI DSS compliant thanks to Shopify's ShopPay platform. For additional protection, we insure 100% of the value of every shipment we make. If it get's lost during shipment, we replace it. If it gets damaged during shipment, we repalce it. We make sure your product arrives exactly as you would expect it to; we promise.
We also ensure privacy protection. We never keep any of your credit card information on file and any of your personal data is stored accordign to our policies.
30 Day Return Policy
Buy with confidence knowing that we accept returns up to 30 days after purchase. We want you to have something you will actually use and we are confident that we keep good quality products in our store with No Junk.
Price Match Promise
Shipping around for the best price is tough, we make it easier by offering the best pricing in the market. But if you find a better price on an in-store item somewhere else we will match it!
ZWO ASI2600MC Pro USB 3.0 Colour Cooled Ca...
These are extraordinary cameras. Incredible detail and sensitivity combined with huge sensors result in gorgeous wide-field images. They also work ...
ZWO Filter Drawer for 2" Mounted Filter (Z...
Filter drawers are the simplest way to improve your astrophotography. Whether you're adding a light pollution filter, or a premium performance narr...
Optolong L-Ultimate Dual-Band 3nm Filter 2...
ZWO ASIAIR MINI (ZWO-ASIAIR-MINI)
The ZWO ASIair mini keeps almost all the performance of the larger plus while reducing size and cost by considerable margins. These are fantastic c...
ZWO EAF 5V Electronic Automatic Focuser (Z...
The ZWO electronic auto focuser (EAF) is sure to improve your astrophotography sessions with pin-point stars. It's a great little package that can ...
Pegasus Astro Pulley and Timing Belt for M...
ZWO AM5 Harmonic EQ and AZ Mount (ZWO-AM5)
ZWO TC40 Carbon Fiber Tripod for AM5 (ZWO-...
ZWO 30mm f4 Mini Guide Scope (ZWO-30F4)
This is a great, lightweight guide scope. Compatible with any ZWO planetary or guide camera and capable of vastly improving your astrophotography m...
ZWO ASI220MM Mini Mono Guiding Camera (ASI...
This is a great guiding camera in a small, lightweight package. This will integrate seamlessly with the ASIAir, and will improve the performance of...
Why we love the William Optics RedCat 71 APO Petzval OTA (T-C-71)
The WO Cat71 is a 71-mm f/4.9 refractor using a Petzval design with a doublet front element incorporating FPL-53 glass, plus a single central element and a single rear lens. By this design, our WO Cat71 provides a flat image plane without any additional flattener and the image circle is over 45mm. WO Cat71 is designed primarily for imaging, making it an astrograph.
This scope provides an excellent colour correction and pinpoint stars at the very edge of a 45mm image circle. If you want to take images with the best quality, this beautiful and powerful telescope is what you want.
The REDCAT 71 is the perfect Apochromatic refractor for photographic astronomers demanding excellence in a small sized telescope. The petzval optical design features a 71mm aperture using FPL-53 glass, and provides a flat image plane without any additional flattener. The STM-coatings and superb quality provide excellent optical performance and unmatched value.
The rear adapter ring features a M48 thread for mounting 48mm astrofilter, combined with tilt adjuster for any type of Imaging sensor, the imaging unit provides astroimager the solution to overcome any situation.
Bahtinov Mask (Patented)
The CAT dew shield features a removable lens cover, with our patented Bahtinov Mask revealed by unscrewing the face plate. The clear design allows for brighter star patterns, and precise focusing for astrophotography.
Versatile CAT Handlebar (Patented)
The CAT Saddle Bar Handle, offers a solid handle with a built in dovetail chamber for use with the WO Uniguide scopes, or other Vixen style guiding/finder scopes.
Internal Helical focuser geared with 2GT belt drive ring able to be focused remotely.
The super smooth field rotator includes markings for every degree, and a solid thumbscrew position lock.
Soft Carry Case
The standard package comes with a soft carry case.
What can I see with a William Optics RedCat 71 APO Petzval OTA (T-C-71)?
Here are some simulated views of common objects. Results with your telescope will vary with viewing conditions, obrits, equipment and more.
25mm Eyepiece - 14x Magnification
10mm Eyepiece - 35x Magnification
5mm Eyepiece - 70x Magnification
Moon with 25mm Eyepiece
Moon with 10mm Eyepiece
Moon with 5mm Eyepiece
Andromeda with 36mm Eyepiece
Andromeda with 25mm Eyepiece
Andromeda with 10mm Eyepiece
What's in the Box
|Focuser:||Manual Helical Focuser|
|Image Circle:||> Full Frame|
|Tube Length:||325mm (Fully Retracted)
435mm (Fully Extended)
|Tube Weight:||3.7 kg|
|Interchangeable T-Mount:||Canon EF
Micro Four Thirds