William Optics RedCat 71 APO 348mm f/4.9 OTA
William Optics RedCat 71 APO 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, William Optics RedCat 71 APO provides a flat image plane without any additional flattener and the image circle is over 45mm. William Optics RedCat 71 APO is designed primarily for imaging, making it an astrograph.
William Optics RedCat 71 APO 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!
Key Features:
- 71mm f/4.9 Astrograph.
- FPL-53 glass for colour free apochromatic performance.
- 4 elements in 3 groups (2-1-1- configuration; new, unique, patented design - not a conventional objective/flattener/reducer design).
- Covers 45mm full frame imaging circle.
- Precise helical focusing and camera rotation; includes a 48mm make thread that accepts a wide T-ring.
- Includes mounting rings, 21cm long Red Vixen style dovetail and Cat saddle.
- Weight = 6.2lbs / 2.8kg (OTA only); 8.2lbs / 3.7kg (OTA with ring, dovetail and saddle).
Four-Element Patented Design 2+1+1, Full frame/ APS-C compatible
Super Bright Bahtinov mask.
The premium quality of Anodizing finish and calibrated helical focuser with 2GT gear ring which is much more precise than those on typical camera lenses, and it is lockable, making it easy to nail and maintain focus.
(2GT standard gear ring, 153 teeth, Diameter 98mm, width 8mm)
What's in the Box?
- [A] M48 Dust Cap/Thread
- [B] Tilt Adapter
- [C] Camera Angle Rotator
- [D] Rotator Tension Knob
- [E] Saddle Handlebar (with two M4 thumb screws)
- [F] Helical Focuser with 2GT Gear Ring
- [G] Arca Swiss/Vixen Plate
- [H] Mounting Rings
- [I] Due Shield with Focus Tension Ring
- [J] Super Bright Bahtinov Mask
- [K] Soft Carry Bag
Specifications:
- Focal Length 348mm
- Diameter 71mm
- Aperture f/4.9
- Focuser Helical Focuser with 2GT Gear Ring
- Image Circle >43mm
- Tube Length
- (with dew shield) 435mm
- Weight 6.2lbs / 2.8kg (OTA only)
- 8.2lbs / 3.7kg (OTA with ring, dovetail and saddle)
At The Widescreen Centre, we prioritize prompt order processing and dispatch. We strive to dispatch all orders on the same day or the next working day, depending on the time of your order. We hold extensive stocks to ensure that your items are ready for immediate despatch. Please note that the cut-off time for same-day dispatch is usually 1:30 p.m.
For delivery within Mainland UK, we use reputable couriers to provide efficient service. You can expect your package to arrive in 1-2 working days. Please note that a signature may be required upon delivery to ensure a secure receipt.
In the case of special order items, the delivery time may be longer. If you have any concerns or questions about the delivery of your item, please don't hesitate to Contact Us. We are here to assist you.
Should there be any delay in dispatching your order, we will notify you to keep you informed.
Please be aware that The Widescreen Centre cannot be held responsible for any postal or third-party delays that may occur. We are committed to providing a reliable and efficient delivery service for our valued customers.
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