Reflectors (Newtonians)

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Sky-Watcher 8" Dobsonian Telescope

Sky-Watcher 8" Dobsonian Telescope

B&H # SKSW8DOB MFR # S11700

Key Features

  • 8" Dobsonian-Style Newtonian
  • 1200mm Focal Length
  • 2" Crayford-Style Focuser
  • 2 Plossl 1.25" Eyepieces
$57500
12 Mos. Promo Financing*
In Stock
Sky-Watcher 6" f/8 Traditional Dobsonian Telescope

Sky-Watcher 6" f/8 Traditional Dobsonian Telescope

B&H # SK6TD MFR # S11600/OLD

Key Features

  • 6" / 152 mm Aperture
  • 1200mm Focal Length, f/8 Focal Ratio
  • 2" Single-Speed Rack-and-Pinion Focuser
  • 25mm and 10mm Super Eyepieces
$34000
6 Mos. Promo Financing*
In Stock

Celestron StarSense Explorer DX 130AZ 130mm f/5 AZ Reflector Telescope

B&H # CESSEDX130R MFR # 22461

Key Features

  • Use Smartphone App for Star Navigation
  • Follow Directions to Find Great Objects
  • Advanced Precise Alignment Algorithm
  • Oversized 130mm Reflector Optical Tube
$39995
6 Mos. Promo Financing*
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
$18995
6 Mos. Promo Financing*
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
$28000
6 Mos. Promo Financing*
More on the Way
Expected availability: 2-4 weeks

Sky-Watcher 8" f/5.9 Traditional Dobsonian Telescope

B&H # SK8TD MFR # S11610

Key Features

  • 8" / 203 mm Aperture
  • 1200mm Focal Length, f/5.9 Focal Ratio
  • 2" Single-Speed Crayford Focuser
  • 25mm and 10mm Super Eyepieces
$48500
6 Mos. Promo Financing*
More on the Way
Expected availability: 2-4 weeks

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
$46995
6 Mos. Promo Financing*
In Stock
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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
  • Aluminum-Coated Primary Parabolic Mirror
  • CG-3 Manual German Equatorial Mount
$31995
6 Mos. Promo Financing*
In Stock

Celestron Cometron FirstScope 76mm f/4 Alt-Az Reflector Telescope

B&H # CECFSTS MFR # 21023

Key Features

  • 76mm Aperture Newtonian Reflector
  • 300mm Focal Length, f/4 Focal Ratio
  • Aluminum / SiO2 Mirror Coatings
  • 1.25" Rack-and-Pinion Focuser
$6495
In Stock

Celestron NexStar 130SLT 130mm f/5 Reflector Telescope

B&H # CEN130SLT MFR # 31145

Key Features

  • 130mm Newtonian Reflector OTA
  • 650mm Focal Length, f/5 Focal Ratio
  • Anti-Reflection Multi-Coated Optics
  • 1.25" Focuser, 9mm and 25mm Eyepieces
$52995
12 Mos. Promo Financing*
In Stock
Other Buying Options

Sky-Watcher Flextube 8" f/6 Collapsible GoTo Dobsonian Telescope

B&H # SK8GTCBK MFR # S11800

Key Features

  • 8" Dobsonian-Style Reflector
  • 1200mm Focal Length, f/6 Focal Ratio
  • Space-Saving Collapsible Tube Design
  • Motorized GoTo AZ Base Mount
$1,16500
Call For Promotion: 800-606-6969
12 Mos. Promo Financing*
In Stock

Celestron PowerSeeker 127EQ 127mm f/8 Reflector Telescope

B&H # CEP127EQ MFR # 21049

Key Features

  • 127mm Newtonian Reflector OTA
  • 1000mm Focal Length, f/7.87 Focal Ratio
  • Multi-Coated Primary Parabolic Mirror
  • Manual German Equatorial Mount
$17995
6 Mos. Promo Financing*
In Stock

Celestron 114LCM 114mm f/9 Computerized GoTo Reflector Telescope

B&H # CE114LCM MFR # 31150

Key Features

  • 114mm Newtonian Reflector OTA
  • 1000mm Focal Length, f/9 Focal Ratio
  • Aluminum-Coated Parabolic Primary Mirror
  • 1.25" 25mm and 9mm Eyepieces
$36995
6 Mos. Promo Financing*
In Stock

Celestron ExploraScope 114AZ 4.5" f/8.8 Alt-Az Reflector Telescope

B&H # CEES114AZT MFR # 22103

Key Features

  • Aperture: 114mm / 4.5"
  • Focal Length: 1000mm, f/8.8 Focal Ratio
  • Anti-Reflection Fully Coated Optics
  • 1.25" Rack-and-Pinion Focuser
$15995
6 Mos. Promo Financing*
In Stock
Other Buying Options

Celestron Cometron 114mm f/4 Reflector Telescope

B&H # CEC114AZTS MFR # 21079

Key Features

  • 114 mm Newtonian Reflector
  • 450mm Focal Length, f/4 Focal Length
  • Multi-Coated Parabolic Primary Mirror
  • 10mm and 20mm Kellner Eyepieces
$19995
6 Mos. Promo Financing*
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
  • Aluminum-Coated Primary Parabolic Mirror
  • CG-3 Manual German Equatorial Mount
$28995
6 Mos. Promo Financing*
In Stock

Sky-Watcher Flextube 250P SynScan 10" f/4.7 Dobsonian GoTo AZ Telescope

B&H # SK10GTCD MFR # S11810

Key Features

  • Large 10" f/4.7 Aperture
  • 1200mm Focal Length
  • Highly Reflective Borosilicate Mirror
  • Space-Saving Collapsible Tube Design
$1,42500
12 Mos. Promo Financing*
More on the Way
Expected availability: 2-4 weeks

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
$5995
In Stock

Celestron AstroMaster LT 76AZ Telescope

B&H # CEAMLT76AZ MFR # 31036

Key Features

  • Newtonian Reflector
  • 76mm Aperture
  • 700mm f/9.2
  • Steel Leg Tripod
$13995
In Stock

Celestron PowerSeeker 114EQ 114mm f/8 Reflector Telescope

B&H # CEP114EQ MFR # 21045

Key Features

  • 114mm Newtonian Reflector OTA
  • 900mm Focal Length, f/8 Focal Ratio
  • Multi-Coated Primary Parabolic Mirror
  • Manual German Equatorial Mount
$15995
6 Mos. Promo Financing*
In Stock

Celestron AstroMaster 114EQ 114mm f/8.8 Reflector Telescope

B&H # CEAM114EQ MFR # 31042

Key Features

  • 114mm Newtonian Reflector OTA
  • 1000mm Focal Length, f/9 Focal Ratio
  • Aluminum-Coated Primary Parabolic Mirror
  • CG-2 Manual German Equatorial Mount
$25995
6 Mos. Promo Financing*
In Stock
Other Buying Options

Sky-Watcher 12" Dobsonian Telescope

B&H # SKSW12DOB MFR # S11740

Key Features

  • 12" Dobsonian-Style Newtonian
  • 1500mm Focal Length
  • 2" Crayford-Style Focuser
  • 2 Plossl 1.25" Eyepieces
$1,33500
12 Mos. Promo Financing*
More on the Way
Expected availability: 2-4 weeks

Sky-Watcher Flextube 350P SynScan 14" f/4.6 Dobsonian GoTo AZ Telescope

B&H # SK14GTCD MFR # S11830

Key Features

  • Large 14" f/4.6 Aperture
  • 1650mm Focal Length
  • Highly Reflective Borosilicate Mirror
  • Space-Saving Collapsible Tube Design
$2,92500
12 Mos. Promo Financing*
In Stock

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

B&H # CEFS763004 MFR # 21024

Key Features

  • Names of Astronomers/Scientists on Tube
  • 76mm Aperture Newtonian Reflector
  • 300mm Focal Length, f/4 Focal Ratio
  • 1.25" Rack-and-Pinion Focuser
$5995
In Stock

Tasco Spacestation 4.5"/114mm Reflector Telescope Kit

B&H # TA114STST MFR # 49114500

Key Features

  • 500mm f/7.9 Newtonian Reflector
  • Manual Altazimuth Mount
$17995
6 Mos. Promo Financing*
In Stock

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
$21890
6 Mos. Promo Financing*
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
$22000
6 Mos. Promo Financing*
In Stock

Konusmotor-130 5" f/7.7 Reflector Telescope with RA Motor

B&H # KOD130F1000 MFR # 1786 V2

Key Features

  • 5" / 130mm Aperture
  • 1000mm Focal Length, f/7.7 Focal Ratio
  • Equatorial Mount, Right Ascension Motor
  • Anti-Reflection Multicoated Optics
$24900
Reg. $299.00
Save $50.00
Limited supply at this price
6 Mos. Promo Financing*
In Stock

Sky-Watcher 8" f/3.9 Quattro Imaging Newtonian Telescope (OTA Only)

B&H # SK8GTCD MFR # S11210

Key Features

  • 8" / 205mm Aperture
  • 800mm Focal Length
  • f/3.9 Focal Ratio Optimized for Imaging
  • Highly Reflective Borosilicate Mirrors
$69500
Call For Promotion: 800-606-6969
12 Mos. Promo Financing*
More on the Way
Expected availability: 2-4 weeks

Celestron SkyProdigy 130mm f/5 Reflector GoTo Telescope

B&H # CESP130 MFR # 31153

Key Features

  • 130mm Newtonian-Reflector OTA
  • 650mm Focal Length, f/5 Focal Ratio
  • Aluminum/SiO2 Primary Mirror Coatings
  • 1.25" 25mm and 9mm Eyepieces
$74995
12 Mos. Promo Financing*
In Stock

YOUR RECENTLY VIEWED ITEMS

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.

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