William Optics RedCat 71 APO 350mm f/4.9
AED 8,100.00
- 71mm f/4.9 Petzval Apo 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)
- 348mm focal length
- Precise helical focusing and camera rotation
- M48 male thread for attachment to cameras and accessories
- Covers 45mm full frame imaging circle
- Includes mounting rings, 21cm long Red Vixen style dovetail and Cat saddle
- Bahtinov focus mask
- Integrated gear ring for attaching optional electronic focusers
Available on backorder
Description
William Optics RedCat 71 APO 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.
IMAGING UNIT
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.
Helical Focuser
Internal Helical focuser geared with 2GT belt drive ring able to be focused remotely.
Field Rotator
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.
RedCat 71 Specifications:
- Focal Length: 348mm
- Diameter: 71mm
- Aperture: f/4.9
- Optical Design: Petzval (4 element)
- Focuser: Helical Focuser with 2GT Gear Ring
- Image Circle: >43mm
- Tube Length (with dew shield): 435mm
- Dew Shield Circumference: 323.4mm
- Dew Shield Diameter: 103mm
- Rear Camera Side Threads: M48x0.75
- Weight:
- 6.2lbs / 2.8kg (OTA only)
- 8.2lbs / 3.7kg (OTA with ring, dovetail and saddle)
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