Reflectors (Newtonians)

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Sky-Watcher 10" Flextube 250P SynScan GoTo Collapsible Dobsonian Telescope

Sky-Watcher 10" Flextube 250P SynScan GoTo Collapsible Dobsonian Telescope

B&H # SK10GTCDK MFR # S11810
Key Features
  • Large 10" Aperture
  • SynScan Controller Finds 42,000 Objects
  • Collapsible Design for Easy Travel
$1,71500
In Stock
Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Telescope

Sky-Watcher Flextube 200P 8" Collapsible Dobsonian Telescope

B&H # SKSW8DOBK MFR # S11700
Key Features
  • 8" Dobsonian-Style Reflector
  • 1200mm Focal Length, f/5.9 Focal Ratio
  • Space-Saving Collapsible Tube Design
  • Highly Reflective Borosilicate Mirror
$59900
Reg. $755.00
Save $156.00
In Stock

Sky-Watcher Virtuoso GTi 150P GoTo Tabletop Dobsonian Telescope

B&H # SKVGTI150 MFR # S21205
Key Features
  • 5.9" / 150mm Aperture
  • f/5 Focal Ratio, 750 Focal Length
  • 25mm & 10mm Super Eyepieces
  • SynScan GoTo App for iOS and Android
$42300
In Stock

Sky-Watcher Heritage 150 150mm f/5 Tabletop Reflector AZ Telescope

B&H # SKS11710 MFR # S11710
Key Features
  • 150mm Dobsonian Reflector OTA
  • 750mm Focal Length, f/5 Focal Ratio
  • Collapsible Design: Just 16.75" Closed
  • Aluminum-Coated Parabolic Mirrors
$31000
In Stock

Sky-Watcher Heritage 130mm f/5 Tabletop Reflector Telescope

B&H # SKS11705 MFR # S11705
Key Features
  • International Year of Astronomy Edition
  • 130mm Dobsonian Reflector OTA
  • 650mm Focal Length, f/5 Focal Ratio
  • Collapsible Design: Just 14.5" Closed
$27500
In Stock

Celestron StarSense Explorer 8" Smartphone App-Enabled Dobsonian Telescope

B&H # CESSE203DOBT MFR # 22470
Key Features
  • Use Smartphone for Tour of Night Sky
  • StarSense Sky Recognition Technology
  • Dobsonian-Style Base
  • 8" Newtonian Reflector Optical Tube
$79900
In Stock

Celestron StarSense Explorer LT 114AZ 114mm f/9 AZ Reflector Telescope

B&H # CESSELT114R MFR # 22452
Key Features
  • Use Smartphone App for Star Navigation
  • Follow Directions to Find Great Objects
  • Advanced Precise Alignment Algorithm
  • Powerful 114mm Reflector Optical Tube
$19995
In Stock
Other Buying Options

Celestron StarSense Explorer 150mm f/5 Tabletop Dobsonian Telescope

B&H # CESSE150TDT MFR # 22482
Key Features
  • Use Smartphone for Tour of Night Sky
  • See Moon, Planets, Nebulae, Galaxies
  • 150mm / 5.9" Parabolic Mirror
  • 25mm & 10mm Eyepieces
$46499
In Stock

Celestron StarSense Explorer 130mm f/5 Tabletop Dobsonian Telescope

B&H # CESSE130TDT MFR # 22481
Key Features
  • Use Smartphone for Tour of Night Sky
  • See Moon, Planets, Nebulae, Galaxies
  • 130mm / 5.1" Parabolic Mirror
  • 25mm & 10mm Eyepieces
$39215
In Stock

Celestron Astro Fi 130mm f/5 Reflector Telescope

B&H # CEA130WIFIRF MFR # 22203
Key Features
  • 130mm Newtonian Reflector OTA
  • 650mm Focal Length, f/5 Focal Ratio
  • Multi-Coated Parabolic Primary Mirror
  • 1.25" Focuser, 10mm and 25mm Eyepieces
$49900
In Stock

Sky-Watcher S11610 Classic 200P Dobsonian Kit

B&H # SK8TDK MFR # S11610
Key Features
  • Beginner Telescope with Base
  • Bright 200mm Aperture
  • Parabolic Primary Mirror
  • Heavy-Duty Rocker Box
$65500
In Stock

Celestron FirstScope 76mm f/4 Signature Series Moon Alt-Az Reflector Telescope

B&H # CEFSSMT MFR # 22016
Key Features
  • Graphic of the Moon on Tube
  • 76mm Aperture Newtonian Reflector
  • 300mm Focal Length, f/4 Focal Ratio
  • 1.25" Rack-and-Pinion Focuser
$6900
In Stock

Celestron StarSense Explorer LT 114AZ Reflector Telescope and EclipSmart Solar Filter Kit

B&H # CESSELT114RF
Key Features
  • Use Smartphone App for Star Navigation
  • Powerful 114mm Reflector Optical Tube
  • Manual Alt-Azimuth Yoke Mount
  • ISO-Certified Safe Solar Filter
$22790
In Stock
  • This item cannot be returned.

Celestron PowerSeeker 127EQ 127mm f/8 Reflector Telescope with Accessory Kit

B&H # CEP127EQAK
Key Features
  • 127mm Newtonian Reflector OTA
  • 1000mm Focal Length, f/7.87 Focal Ratio
  • Multi-Coated Primary Parabolic Mirror
  • Manual German Equatorial Mount
$24323
In Stock

Celestron StarSense Explorer 114mm f/4 Tabletop Dobsonian Telescope

B&H # CESSE114TDT MFR # 22480
Key Features
  • Use Smartphone for Tour of Night Sky
  • See Moon, Planets, Nebulae, Galaxies
  • 114mm / 4.5" Parabolic Mirror
  • 17mm & 10mm Eyepieces
$29750
In Stock

Celestron AstroMaster 130EQ 130mm f/5 Reflector Telescope

B&H # CEAM130EQ MFR # 31045
Key Features
  • 130mm Newtonian Reflector OTA
  • 650mm Focal Length, f/5 Focal Ratio
  • Spherical Mirror
  • CG-3 Manual German Equatorial Mount
$29900
In Stock
Other Buying Options

Celestron AstroMaster 130EQ-MD 130mm f/5 Reflector Telescope

B&H # CEAM130EQMD MFR # 31051
Key Features
  • 130mm Newtonian Reflector OTA
  • 650mm Focal Length, f/5 Focal Ratio
  • Spherical Mirror
  • CG-3 Manual German Equatorial Mount
$32000
In Stock

Sky-Watcher Classic 150P 6" Traditional Dobsonian Telescope

B&H # SK6TDK MFR # S11600
Key Features
  • Ideal Beginner Scope
  • Bright 150mm Aperture
  • Parabolic Primary Mirror
  • Rocker Box with Teflon Bearings
$34900
Reg. $460.00
Save $111.00
In Stock

Explore Scientific FirstLight 130mm f/4.6 Newtonian Telescope with EQ3 Mount

B&H # EXFLN130EQ3 MFR # FL-N130600EQ3
Key Features
  • 600mm Focal Length
  • 25mm Eyepiece
  • Red-Dot Finder
  • Smartphone Adapter
$34999
Special Order
Expected availability: 2-4 Weeks

Celestron Omni XLT 150 150mm f/5 EQ Reflector Telescope

B&H # CEOXLT150K MFR # 31057
Key Features
  • 150mm Newtonian Reflector OTA
  • 750mm Focal Length, f/5 Focal Ratio
  • StarBright XLT Multicoated Optics
  • 1.25" 25mm Focal Length Eyepiece
$69995
In Stock

Explore Scientific FirstLight 203mm f/6 Alt-Az Dobsonian Telescope

B&H # EXFL8STD MFR # FL-DOB0806-02
Key Features
  • Large 203mm Aperture
  • 1218mm Focal Length, f/6 Focal Ratio
  • Low-Expansion Glass Primary Mirror
  • Borosilicate Glass Secondary Mirror
$69999
Special Order
Expected availability: 2-4 Weeks

iOptron 300mm f/4 Imaging Newtonian Telescope Optical Tube Assembly

B&H # IO6315 MFR # 6315
Key Features
  • Newtonian Reflector
  • 1200mm Focal Length, f/4 Focal Ratio
  • BK7 Optical Glass Primary Mirror
  • 8x50mm Finderscope
$99800
Special Order
Expected availability: 2-4 Weeks

Sky-Watcher Flextube 300P 12" Collapsible Dobsonian Telescope Kit

B&H # SKSW12DOBK MFR # S11740
Key Features
  • 12" Dobsonian-Style Reflector
  • Space-Saving Collapsible Tube Design
  • 1500mm Focal Length, f/4.9 Focal Ratio
  • Highly Reflective Borosilicate Mirror
$1,39900
Reg. $1,715.00
Save $316.00
In Stock

Celestron Advanced VX 8 200mm f/5 GoTo Reflector Telescope

B&H # CEAVX8NK MFR # 32062
Key Features
  • 200mm Aperture
  • 1000mm Focal Length, f/5 Focal Ratio
  • Anti-Reflection Fully Coated Optics
  • Rack-and-Pinion Focuser
$1,62900
In Stock

Unistellar eQuinox 2 114mm f/4 Digital Reflector Telescope

B&H # UNEQUINOX2 MFR # EQUINOX 2
Key Features
  • Auto Light Pollution Filter Software
  • Onboard Image Processing Computer
  • Autonomous Field Detection Alignment
  • 64GB of Onboard Memory
$2,09900
Reg. $2,499.00
Save $400.00
In Stock
Other Buying Options

Sky-Watcher Flextube 400P SynScan 16" f/4.4 Dobsonian GoTo AZ Telescope

B&H # SK16GTCD MFR # S11840
Key Features
  • Large 16" f/4.4 Aperture
  • 1800mm Focal Length
  • Highly Reflective Borosilicate Mirror
  • Space-Saving Collapsible Tube Design
$4,68000
Special Order
Expected availability: 3-5 Weeks

Explore Scientific National Geographic 76mm Compact Reflector Telescope

B&H # EXNG76CRT MFR # 80-20103
Key Features
  • Tabletop Dobsonian-Style Reflector
  • Fully Assembled & Ready to Use
  • 6mm and 20mm Eyepieces
  • 2x Barlow Lens
$5999
In Stock

Polaroid 76700 60mm f/9 Reflector Telescope

B&H # PO525RFLT MFR # IT-525X-RFL
Key Features
  • 60mm Reflector-Style OTA
  • 700mm Focal Length, f/9 Focal Ratio
  • Manual Alt-Azimuth Mount
  • 0.965" Rack-and-Pinion Focuser
$6589
Back-Ordered

Learning About Newtonian Reflectors

Newtonian reflectors are a popular choice in astronomical telescopes that use curved mirrors to reflect light onto smaller angled mirrors and into side-mounted eyepieces. Newton developed this telescope to overcome chromatic aberration problems with the lenses used in early refractor telescopes. You can use this simple, yet effective design with a large aperture that's ideal for looking at faint objects in the sky.


What Are Newtonian Reflectors?

Newton telescopes, such as Bushnell reflector telescopes, have a cylindrical shape that's open at the top. A large diameter parabolic primary mirror is at the bottom, and a small flat mirror sits at 45 degrees near the top of the tube. This second mirror reflects light onto an eyepiece mounted on the side of the telescope. Some reflector telescopes have coma corrector lenses to reduce aberrations at the edge of your viewing field. Because the eyepiece is on the side of the telescope, viewing is more comfortable than with comparable lens-based refractor telescopes.

The focal length of the primary mirror in a Newtonian telescope determines its overall length. Compound telescopes, also known as catadioptric (Cassegrain) telescopes, use a combination of two curved mirrors and an end-mounted eyepiece that reduces the overall length of the telescope, while permitting an increase in focal length.


Dobsonian Telescopes

Dobsonian telescopes, such as Tasco reflector telescopes, are Newtonian reflector telescopes mounted on an altazimuth mount. This type of mount has two degrees of movement, one vertical and the other horizontal, and is similar in concept to a photographic tripod. Although the original Dobsonian telescope concept was that it was lighter than comparative Newtonian telescopes, the main attribute of current Dobsonian telescope kits is a mount that's simple and easy to use.


Celestial Tracking Capabilities

While an altazimuth mount is easy to use, it doesn't follow the path taken by stars, so constant horizontal and vertical adjustments are necessary when tracking celestial bodies. An equatorial mount overcomes this problem by tilting the angle of rotation to match the earth's axis of rotation. This satisfies any astrophotographer's need for a long-time exposure. However, you can overcome the disadvantages of the altazimuth mount by using GoTo Dobsonians. These are Dobsonian telescopes with digital axis control that automatically tracks the movement of the stars.


Telescope Aperture and Magnification

A telescope's aperture is the diameter of its primary mirror. Larger mirrors collect more light and are brighter and sharper. The focal ratio is the focal length of the lens divided by its aperture, and as with camera lenses, smaller values are brighter. Determine magnification by dividing the focal length of the lens by the focal length of the telescope eyepiece. As a rule of thumb, it's best to avoid magnifications greater than 50 times per inch of aperture. If you're an amateur photographer, you may want to use a lower magnification, especially when using solar telescopes to view large objects like the sun or moon.


You can find the best Newtonian reflector telescope for your celestial viewing at B&H Photo and Video.