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Reflectors

No design delivers more aperture for the money than a Newtonian reflector. A mirror is cheaper to make well than a lens, has no chromatic aberration whatsoever, and scales to sizes that would be impossible in glass — which is why almost every large amateur telescope is a reflector. David Astro carries reflectors in Canada, from fast imaging astrographs to large visual Newtonians, stocked in Canada and shipped worldwide.

The trade is collimation and a coma corrector. Both are manageable, and we will be straightforward about what each telescope actually needs.

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$1,099.00 USD - $1,099.00 USD
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Askar N160 f/3.6 Newtonian

160mm Aperture Parabolic Mirror f/3.4 Corrected Focal Ratio with Included 0.95x Corrector 544mm Corrected Focal Length Carbon Fiber Tube Construct...

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$479.95 USD - $479.95 USD
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Celestron 114LCM Computerized Telescope

114mm (4.49") Newtonian Reflector optics 1000mm focal length (f/8.77) Fully computerized Alt-Azimuth mount NexStar+ database with 40,000 celestial...

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$479.95 USD - $479.95 USD
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$1,299.00 USD - $1,299.00 USD
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Celestron Advanced VX 6" Newtonian Telescope

150mm (6") Newtonian Reflector 750mm Focal Length (f/5) Advanced VX Computerized Equatorial Mount 30 lb Instrument Load Capacity NexStar+ GoTo wit...

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Celestron Advanced VX 8" Newtonian Telescope

200mm (7.87") Newtonian Reflector 1000mm Focal Length, f/5 Focal Ratio Advanced VX Computerized GoTo Equatorial Mount 30 lb Instrument Payload Cap...

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Celestron Astro Fi 130mm Newtonian Telescope

130mm (5.19") Newtonian Reflector 650mm Focal Length, f/5 Focal Ratio Integrated WiFi for Smartphone/Tablet Control SkyAlign Technology for Fast, ...

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$329.95 USD - $329.95 USD
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Celestron AstroMaster 114EQ Telescope

114mm (4.48") Newtonian Reflector Telescope 1000mm Focal Length (f/8.77) Manual CG-2 Equatorial Mount with Slow-Motion Controls Includes 20mm (50x...

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$329.95 USD - $329.95 USD
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Celestron AstroMaster 130EQ Telescope

130mm (5.11") Newtonian Reflector Optics 650mm Focal Length, f/5 Focal Ratio CG-3 Manual German Equatorial Mount 345x Light Gathering Power Includ...

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$359.95 USD - $359.95 USD
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$389.95 USD - $389.95 USD
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Celestron AstroMaster 130EQ-MD (Motor Drive) Telescope

130mm (5.11") Newtonian Reflector 650mm Focal Length, f/5 Focal Ratio CG-3 Equatorial Mount with Slow-Motion Controls Included RA Motor Drive for ...

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$389.95 USD - $389.95 USD
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$209.95 USD - $209.95 USD
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Celestron ExploraScope 114AZ Telescope

114mm (4.5") Newtonian Reflector 1000mm Focal Length (f/9) 265x Light Gathering Power Manual Alt-Azimuth Mount with Clutch Total Kit Weight of 6.7...

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Celestron FirstScope Signature Series Moon by Robert Reeves Telescope

76mm (2.99") Newtonian Reflector Fast f/3.95 Focal Ratio for Wide Views Includes 15x and 75x Eyepieces Ultra-Portable 4.3 lb Tabletop Dobsonian Mo...

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$699.95 USD - $699.95 USD
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Celestron NexStar 130SLT Computerized Telescope

130mm (5.12") Newtonian Reflector with Parabolic Primary Mirror 650mm Focal Length, f/5 Focal Ratio Computerized GoTo Mount with 40,000 Object Dat...

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Celestron Omni XLT 150 Telescope

150mm (5.91") Newtonian Reflector with a Parabolic Primary Mirror 750mm Focal Length (f/5) Omni CG-4 German Equatorial Mount StarBright XLT Optica...

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$739.95 USD - $739.95 USD
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$199.95 USD - $199.95 USD
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$199.95 USD

Celestron PowerSeeker 114EQ Telescope

114mm (4.49") Newtonian Reflector 900mm Focal Length (f/7.89) Manual German Equatorial Mount with Slow-Motion Controls Gathers 265x More Light Tha...

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$199.95 USD - $199.95 USD
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$229.95 USD - $229.95 USD
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Celestron PowerSeeker 127EQ Telescope

127mm (5") Newtonian Reflector 1000mm Focal Length (f/7.87) Manual German Equatorial Mount Light Gathering Power: 329x Human Eye Highest Useful Ma...

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$229.95 USD - $229.95 USD
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Celestron StarSense Explorer 12" Smartphone App-Enabled Dobsonian Telescope

305mm (12") Newtonian Reflector Optics 1500mm Focal Length (f/4.9) StarSense Explorer App-Enabled Telescope Guidance Gathers 1895x More Light Than...

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$379.95 USD - $379.95 USD
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Celestron StarSense Explorer™ 114mm Smartphone App-Enabled Tabletop Dobsonian Telescope

114mm (4.48") Newtonian Reflector with Parabolic Primary Mirror Fast f/4 focal ratio for wide, bright fields of view Uses patented StarSense Explo...

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$379.95 USD - $379.95 USD
$379.95 USD
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$479.95 USD - $479.95 USD
$479.95 USD
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Celestron StarSense Explorer™ 130mm Smartphone App-Enabled Tabletop Dobsonian Telescope

130mm (5.12") Newtonian Reflector with a Parabolic Primary Mirror StarSense Explorer app uses your smartphone for real-time object locating 650mm ...

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Celestron StarSense Explorer™ 150mm Smartphone App-Enabled Tabletop Dobsonian Telescope

150mm (5.9") Newtonian Reflector Optics 750mm Focal Length (f/5) StarSense Explorer App-Enabled Navigation 30x & 75x Magnification with Includ...

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$499.95 USD - $499.95 USD
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Celestron StarSense Explorer™ DX 130AZ Smartphone App-Enabled Newtonian Reflector Telescope

130mm (5.11") Newtonian Reflector with Parabolic Primary Mirror StarSense Explorer app uses your smartphone for real-time sky recognition 650mm fo...

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$499.95 USD - $499.95 USD
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$259.95 USD - $259.95 USD
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Celestron StarSense Explorer™ LT 114AZ Smartphone App-Enabled Newtonian Reflector Telescope

114mm (4.5") Newtonian Reflector optics 1000mm focal length (f/9) Patented StarSense Explorer app guides you to targets Manual alt-azimuth mount w...

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$259.95 USD - $259.95 USD
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Celestron StarSense Explorer™ Smartphone App-Enabled Dobsonian Telescope - 10"

254mm (10") Newtonian Reflector Optics 1200mm Focal Length (f/4.7) StarSense Explorer Smartphone-Enabled Navigation Altazimuth Dobsonian Base with...

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$1,199.00 USD - $1,199.00 USD
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$879.00 USD - $879.00 USD
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Celestron StarSense Explorer™ Smartphone App-Enabled Dobsonian Telescope - 8"

203mm (8") Newtonian Reflector Optics 1200mm Focal Length (f/5.9) Patented StarSense Explorer Sky Recognition Technology 841x Light Gathering Powe...

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$879.00 USD - $879.00 USD
$879.00 USD
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$879.00 USD
Explore Scientific 10-inch Dobsonian Reflector Telescope
$899.99 USD - $899.99 USD
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Explore Scientific 10-inch Dobsonian Reflector Telescope

254mm (10-inch) Newtonian Reflector Optics 1200mm Focal Length (f/4.7) Stable Dobsonian Mount with Spring Tension System 2-inch Crayford-Style Foc...

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$899.99 USD - $899.99 USD
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Explore Scientific 10-inch f/5 Hybrid Truss Tube Dobsonian Telescope
$899.99 USD - $899.99 USD
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$899.99 USD

Explore Scientific 10-inch f/5 Hybrid Truss Tube Dobsonian Telescope

254mm (10-inch) Newtonian Reflector Optics 1270mm Focal Length Fast f/5 Focal Ratio Portable Hybrid Truss Tube Design Dobsonian Base with Altitude...

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$899.99 USD - $899.99 USD
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$899.99 USD

Newtonian Design and What It Demands

A parabolic primary and a flat diagonal secondary. Simple, efficient, and with two characteristics you have to work with rather than around.

  • Focal ratio and its consequences: Fast Newtonians around f/4 give wide bright fields for imaging but demand precise collimation and a coma corrector. Slower f/6 to f/8 designs are far more forgiving.
  • Coma: Off-axis stars take a comet shape, inherent to a parabolic mirror and increasingly obvious as focal ratio drops. A coma corrector is effectively mandatory below f/6 for imaging.
  • Collimation: Mirror alignment shifts with transport and temperature. Fast scopes need checking each session; slower ones hold for weeks.
  • Central obstruction: The secondary mirror reduces contrast slightly. Imaging Newtonians use larger secondaries to fully illuminate a sensor; visual designs minimize them.
  • Cooling: A large mirror stores heat and produces a boundary layer that softens detail until it equalizes. Rear fans reduce the wait considerably on Canadian nights.
  • Dobsonian mounting: The most practical way to support a large Newtonian for visual use, at a fraction of an equatorial's cost.

Why Choose David Astro for Reflectors

A reflector is excellent value provided you are set up to maintain it, and we would rather tell you that beforehand.

  • Collimation expectations set honestly: We tell you how often your specific focal ratio needs checking and recommend a tool that matches, so it is a two-minute routine rather than a chore.
  • Coma corrector specified with the tube: For imaging Newtonians we supply the corrector and its spacing alongside the telescope, since the field is unusable without it.
  • Focuser assessment: Stock focusers on fast Newtonians often cannot hold an imaging train squarely, and we will say when an upgrade is genuinely required.
  • Authorized dealer: Full manufacturer warranty and verified authenticity, with service in Canada.
  • Ships from Canada: Large optics delivered domestically with no duties or brokerage fees.

Reflectors in Canada — Frequently Asked Questions

How often will I need to collimate?
An f/4 imaging Newtonian benefits from a check every session. An f/6 visual scope typically holds alignment for weeks unless transported roughly. It takes about two minutes once you are practised.
Do I need a coma corrector?
For imaging below about f/6, yes — corner stars will show obvious coma otherwise. For visual use at f/5 and slower most observers are untroubled, though a corrector does improve the edge.
How long does a mirror take to cool?
A 200 mm mirror moved from a warm house to a Canadian winter night typically needs 45 minutes or more. A rear-mounted fan blowing across the mirror face reduces that substantially.
Are reflectors good for planets?
Yes, given aperture and good collimation. A well-collimated 200 mm Newtonian shows excellent planetary detail; the central obstruction costs a little contrast that extra aperture more than repays.

Considering a Newtonian?

Tell us whether it is for visual or imaging and we will specify the tube, corrector and tools. Canadian stock, worldwide shipping.