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Sky-Watcher Explorer 150PDS
349.00
Tax included 
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150 mm parabolic Newtonian optimised for prime-focus astrophotography. The Sky-Watcher Explorer 150PDS features a 750 mm focal length at f/5, 2-inch dual-speed 10:1 Crayford focuser, 94% reflective RAQ mirror coatings and support for 1.25-inch and 2-inch eyepieces.
Designed for prime-focus astrophotography while retaining strong visual performance, the Sky-Watcher Explorer 150PDS uses a 150 mm Newtonian optical system with a 750 mm focal length and f/5 focal ratio.
Its parabolic primary mirror, dual-speed 2-inch Crayford focuser and mechanical design make the optical tube particularly suitable for astronomical imaging.
150 mm Parabolic Primary Mirror
The 150 mm parabolic primary mirror is designed to bring incoming light rays to the same focal point and eliminate the spherical aberration associated with spherical mirrors at fast focal ratios.
Sky-Watcher specifies diffraction-limited optics designed to produce sharp, contrast-rich and detailed images.
750 mm Focal Length and f/5 Focal Ratio
With a 750 mm focal length and 150 mm aperture, the Explorer 150PDS operates at f/5.
Sky-Watcher specifically optimises this configuration for prime-focus astrophotography while retaining suitability for visual observation.
2-Inch Dual-Speed Crayford Focuser
Focusing is provided by a 2-inch dual-speed Crayford focuser.
Its 10:1 reduction allows both rapid coarse adjustment and highly precise fine focusing, particularly useful when establishing critical focus for astrophotography.
The focuser also incorporates an M54 internal thread.
1.25-Inch and 2-Inch Compatibility
Adapters for both 1.25-inch and 2-inch eyepieces are supplied.
This provides compatibility with a wide range of astronomical eyepieces and accessories.
Radiant Aluminum Quartz RAQ Coating
Both primary and secondary mirrors feature Sky-Watcher Radiant Aluminum Quartz RAQ coatings.
The coating system combines reflective aluminium, dielectric tantalum pentoxide to improve reflectivity and durability, and a protective silicon dioxide layer.
Sky-Watcher specifies 94% reflectivity.
52 mm Secondary Mirror
The secondary mirror has a 52 mm minor axis.
It is supported by four 0.5 mm thin spider vanes designed to minimise obstruction of the optical path and reduce diffraction spikes.
Rigid Internally Darkened Tube
The optical tube is manufactured from rolled steel and features an internally darkened finish.
This construction is designed to reduce unwanted internal reflections while maintaining good mechanical rigidity.
Optional Coma Corrector
Sky-Watcher offers an optically matched M48 coma corrector for this range to optimise astrophotography performance.
The coma corrector is available separately.
28 mm LET Eyepiece
A 28 mm 2-inch LET eyepiece is supplied with the telescope.
It provides 27× magnification with the telescope's 750 mm focal length.
6 × 30 Finderscope
A fully multi-coated 6 × 30 optical finderscope is supplied.
It incorporates a crosshair reticle and centring bracket for alignment with the main optical tube.
Mounting
The telescope is supplied with tube rings and a 45 mm dovetail bar.
With an optical tube weight of 5 kg, Sky-Watcher specifically lists the EQ3 Pro, EQ5 Pro, EQM-35 Pro and EQ-AL55i Pro among suitable mounts.
Technical Specifications
• Manufacturer : Sky-Watcher
• Model : Explorer 150PDS
• Product code : 10218
• Type : Newtonian telescope optimised for imaging
• Primary mirror diameter : 150 mm
• Primary mirror : Parabolic
• Focal length : 750 mm
• Focal ratio : f/5
• Secondary mirror diameter : 52 mm
• Mirror coating : Radiant Aluminum Quartz RAQ
• Stated reflectivity : 94%
• Secondary mirror supports : Four 0.5 mm vanes
• Focuser : Crayford
• Focuser size : 2 inch
• Reduction ratio : 10:1
• Focuser internal thread : M54
• Eyepiece compatibility : 1.25 inch and 2 inch
• Supplied eyepiece : 28 mm 2-inch LET
• Magnification with supplied eyepiece : 27×
• Highest practical power stated : 300×
• Finder : 6 × 30 with crosshair reticle
• Optical tube : Internally darkened rolled steel
• Dovetail : 45 mm
• Tube rings : Included
• Camera adapter : Included
• Optical tube weight : 5 kg
• Stated light gathering compared with 130 mm : +33%
Package Contents
• Sky-Watcher Explorer 150PDS optical tube
• Tube rings
• 45 mm dovetail bar
• 28 mm 2-inch LET eyepiece
• 6 × 30 finderscope with crosshair reticle
• 1.25-inch eyepiece adapter
• 2-inch eyepiece adapter
• Camera adapter
Sky-Watcher Explorer 150PDS
Specific References
- UPC
- 10218
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150 mm parabolic Newtonian optimised for prime-focus astrophotography. The Sky-Watcher Explorer 150PDS features a 750 mm focal length at f/5, 2-inch dual-speed 10:1 Crayford focuser, 94% reflective RAQ mirror coatings and support for 1.25-inch and 2-inch eyepieces.