Sky-Watcher Black Diamond 200/800 Dual Speed Newtonian OTA | PixelSkiesAstro
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Sky-Watcher Black Diamond 200/800 Dual Speed Newtonian OTA

Quattro 200P — 200/800 imaging Newtonian The Quattro 200P is a fast parabolic imaging Newtonian with a nominal 200 mm aperture and 800 mm native focal length at f/4. Its low-expansion borosilicate primary is intended to reduce sensitivity to changing temperature during an imaging session.

Manufacturer model: Quattro 200P — 200/800 imaging Newtonian · Specifications checked against manufacturer data on 2026-11-04

Quattro 200P — 200/800 imaging Newtonian

The Quattro 200P is a fast parabolic imaging Newtonian with a nominal 200 mm aperture and 800 mm native focal length at f/4. Its low-expansion borosilicate primary is intended to reduce sensitivity to changing temperature during an imaging session.

Optical correction

Use a matching f/4 coma corrector to improve off-axis star shapes when imaging. Corrector spacing and camera adapters must follow the specification of the chosen corrector. A reduced focal ratio is not assigned to the native optical tube.

Focusing and structure

A 2-inch dual-speed linear-power focuser supports precise camera focus. Thin 0.5 mm secondary vanes and ray-traced internal baffles reduce diffraction/stray-light effects. The listed finder is 8×50.

Mounting and model details

The manufacturer’s published tube mass is 9.5 kg. The global table identifies the physical optical diameter as 205 mm; the nominal product designation is retained.

Sky-Watcher manufacturer documentation

Compatibility notes

Global nominal and published optical diameter distinguished; suspect global tube dimensions omitted rather than copied.

Additional specifications

Nominal aperture (mm)200
Primary mirror materialLow-expansion borosilicate glass
Published optical diameter (mm)205
Secondary spider thickness (mm)0.5
Stray light controlRay-traced internal baffles
SW0305

Ficha técnica

Corrector
Matched coma corrector required for corrected wide-field imaging; see configuration below
Finder
8×50
Focal length (mm)
800
Focuser
2-inch dual-speed linear-power focuser
Model
Quattro 200P — 200/800 imaging Newtonian
Native focal ratio
f/4
Optical design
Parabolic imaging Newtonian
OTA weight (kg)
9.5
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