Skywatcher Quattro 300P
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305 mm f/4 Newtonian astrograph designed for deep-sky astrophotography and visual use. Large aperture, accurate focusing, full-frame sensor compatible.
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Description
The Sky-Watcher Quattro 300P Imaging Newtonian is a fast f/4 astrograph with a 305 mm aperture, ideal for wide-field astrophotography and also suitable for visual observation.
It features a parabolic borosilicate glass primary mirror with a high-reflectivity RAQ™ coating (94%), providing bright, high-contrast images.
The oversized 102 mm secondary mirror ensures even illumination across full-frame sensors, making it highly effective for DSLR and CCD imaging.
The 1135 mm long steel optical tube is equipped with a 2" dual-speed (10:1) Crayford focuser for smooth, precise focusing.
The package includes tube rings, a D-style dovetail plate, a 9x50 achromatic finder, and 1.25"/2" eyepiece adapters.
Technical Specifications
Type: Newtonian Reflector
Aperture: 305 mm
Focal Length: 1200 mm
Focal Ratio: f/4
Primary Mirror: Parabolic borosilicate glass, RAQ™ 94%
Secondary Mirror: 102 mm (33% obstruction diameter / 11% area)
Focuser: 2" dual-speed Crayford (10:1)
Finderscope: 9x50
Tube Length: 1135 mm
Tube Diameter: 362 mm
Tube Weight: 25.8 kg (with accessories)
Max. Useful Magnification: 600x
Limiting Magnitude: 14.9
Dawes Limit: 0.38"
Rayleigh Limit: 0.46"
Additional Information
Design: Steel tube with Black Diamond finish
Compatibility: Full-frame DSLR / CCD sensors
Recommended Accessories: Coma corrector for astrophotography
Usage: Deep-sky imaging and visual observation