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Sky-Watcher Quattro 200P
629.00
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205 mm parabolic Newtonian astrograph designed primarily for astrophotography. The Sky-Watcher Quattro 200P features an 800 mm focal length at f/4, low-expansion borosilicate mirrors and a 2-inch dual-speed 10:1 Linear Power focuser.
Designed primarily for astrophotography, the Sky-Watcher Quattro 200P combines a 205 mm parabolic Newtonian optical system with an 800 mm focal length and fast f/4 focal ratio.
Its low-expansion borosilicate mirrors provide good thermal stability, while Radiant Aluminum Quartz RAQ coatings deliver a stated reflectivity of 94%.
The 2-inch dual-speed 10:1 Linear Power focuser provides precise focusing, particularly when using a camera.
The internally darkened steel tube incorporates baffles designed to reduce stray light and improve image contrast.
Compatible with both 1.25-inch and 2-inch accessories, the Quattro 200P is also supplied with tube rings, a 45 mm dovetail bar and a 9 × 50 optical finderscope.
205 mm Parabolic Newtonian Optics
The parabolic primary mirror has a diameter of 205 mm.
With an 800 mm focal length, the Quattro 200P operates at f/4, a configuration particularly suited to deep-sky imaging.
Borosilicate Mirrors
The primary and secondary mirrors are manufactured from low-expansion borosilicate glass.
This material promotes faster thermal equilibrium and helps minimise changes in mirror shape during cooling.
Radiant Aluminum Quartz RAQ Coating
The primary and secondary mirrors feature Sky-Watcher Radiant Aluminum Quartz RAQ coatings.
Sky-Watcher specifies 94% reflectivity together with a durable optical finish.
70 mm Secondary Mirror
The secondary mirror has a 70 mm minor axis.
It is supported by four 0.5 mm thin spider vanes designed to minimise optical obstruction and diffraction effects.
2-Inch Linear Power Focuser
Focusing is provided by a 2-inch dual-speed Linear Power focuser.
The drawtube is supported by four precision ball bearings to provide good mechanical stability when carrying a camera or heavy accessory.
The 10:1 reduction allows highly precise fine focusing.
Internally Baffled Tube
The steel optical tube features an internally darkened finish and nine internal baffle rings.
This design reduces stray light and contributes to improved image contrast.
Fully Collimatable Optics
Both primary and secondary mirrors are adjustable.
The primary mirror cell incorporates large adjustment knobs for convenient collimation.
9 × 50 Finderscope
A fully multi-coated 9 × 50 optical finderscope is supplied.
Its crosshair reticle assists with locating and centring celestial objects.
Technical Specifications
• Manufacturer : Sky-Watcher
• Model : Quattro 200P
• Product code : 10238
• Type : Newtonian astrograph
• Primary mirror diameter : 205 mm
• Primary mirror : Parabolic
• Focal length : 800 mm
• Focal ratio : f/4
• Mirror material : Low-expansion borosilicate glass
• Secondary mirror diameter : 70 mm
• Mirror coating : Radiant Aluminum Quartz RAQ
• Stated reflectivity : 94%
• Secondary mirror supports : Four 0.5 mm vanes
• Focuser : Linear Power
• Focuser size : 2 inch
• Reduction ratio : 10:1
• Drawtube support : Four precision ball bearings
• Eyepiece compatibility : 1.25 inch and 2 inch
• Supplied eyepieces : None
• Highest practical power stated : 410×
• Finder : 9 × 50 with crosshair reticle
• Collimation : Adjustable primary and secondary mirrors
• Optical tube : Internally darkened rolled steel
• Internal baffles : 9
• Tube rings : Included
• Dovetail : 45 mm
• Camera adapter : Included
Package Contents
• Sky-Watcher Quattro 200P optical tube
• Tube rings
• 45 mm dovetail bar
• 9 × 50 finderscope with crosshair reticle
• 1.25-inch eyepiece adapter
• 2-inch eyepiece adapter
• Camera adapter
Sky-Watcher Quattro 200P
Specific References
- UPC
- 10238
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205 mm parabolic Newtonian astrograph designed primarily for astrophotography. The Sky-Watcher Quattro 200P features an 800 mm focal length at f/4, low-expansion borosilicate mirrors and a 2-inch dual-speed 10:1 Linear Power focuser.