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Closed October 10–12 for Thanksgiving weekend
Closed October 10–12 for Thanksgiving weekend

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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CA$1,538.00 - CA$1,538.00
CA$1,538.00
CA$1,538.00 - CA$1,538.00
CA$1,538.00

Askar N160 f/3.6 Newtonian

ASK-N160
1 in stock

160mm Aperture Parabolic Mirror f/3.4 Focal Ratio with Included 0.95x Corrector 544mm Corrected Focal Length Carbon Fiber Tube Construction 3.97kg...

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CA$1,538.00 - CA$1,538.00
CA$1,538.00
CA$1,538.00 - CA$1,538.00
CA$1,538.00
CA$667.00 - CA$667.00
CA$667.00
CA$667.00 - CA$667.00
CA$667.00

Celestron 114LCM Computerized Telescope

CEL-31150

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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CA$667.00 - CA$667.00
CA$667.00
CA$667.00 - CA$667.00
CA$667.00
CA$1,806.00 - CA$1,806.00
CA$1,806.00
CA$1,806.00 - CA$1,806.00
CA$1,806.00

Celestron Advanced VX 6" Newtonian Telescope

CEL-32054

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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CA$1,806.00 - CA$1,806.00
CA$1,806.00
CA$1,806.00 - CA$1,806.00
CA$1,806.00
CA$2,223.00 - CA$2,223.00
CA$2,223.00
CA$2,223.00 - CA$2,223.00
CA$2,223.00

Celestron Advanced VX 8" Newtonian Telescope

CEL-32062

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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CA$2,223.00 - CA$2,223.00
CA$2,223.00
CA$2,223.00 - CA$2,223.00
CA$2,223.00
CA$834.00 - CA$834.00
CA$834.00
CA$834.00 - CA$834.00
CA$834.00

Celestron Astro Fi 130mm Newtonian Telescope

CEL-22203

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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CA$834.00 - CA$834.00
CA$834.00
CA$834.00 - CA$834.00
CA$834.00
CA$459.00 - CA$459.00
CA$459.00
CA$459.00 - CA$459.00
CA$459.00

Celestron AstroMaster 114EQ Telescope

CEL-31042

114mm (4.48") Newtonian Reflector 1000mm focal length (f/8.77) CG-2 Equatorial Mount with manual slow-motion controls Includes 20mm (50x) and 10mm...

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CA$459.00 - CA$459.00
CA$459.00
CA$459.00 - CA$459.00
CA$459.00
CA$500.00 - CA$500.00
CA$500.00
CA$500.00 - CA$500.00
CA$500.00

Celestron AstroMaster 130EQ Telescope

CEL-31045
1 in stock

130mm (5.11") Newtonian Reflector Optics 650mm Focal Length and f/5 Focal Ratio CG-3 Manual German Equatorial Mount Gathers 345x More Light Than t...

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CA$500.00 - CA$500.00
CA$500.00
CA$500.00 - CA$500.00
CA$500.00
CA$542.00 - CA$542.00
CA$542.00
CA$542.00 - CA$542.00
CA$542.00

Celestron AstroMaster 130EQ-MD (Motor Drive) Telescope

CEL-31051

130mm (5.11") Newtonian Reflector 650mm Focal Length, f/5 Focal Ratio CG-3 Equatorial Mount Included Clock Drive for Automatic Tracking 345x Light...

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CA$542.00 - CA$542.00
CA$542.00
CA$542.00 - CA$542.00
CA$542.00
CA$188.00 - CA$188.00
CA$188.00
CA$188.00 - CA$188.00
CA$188.00

Celestron AstroMaster LT 76AZ Telescope

CEL-31036

76mm (2.99") Newtonian Reflector Optics 700mm Focal Length (f/9.21) Manual Alt-Azimuth Mount with Steel Tripod Includes Two Eyepieces for 35x &...

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CA$188.00 - CA$188.00
CA$188.00
CA$188.00 - CA$188.00
CA$188.00
CA$292.00 - CA$292.00
CA$292.00
CA$292.00 - CA$292.00
CA$292.00

Celestron ExploraScope 114AZ Telescope

CEL-22103

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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CA$292.00 - CA$292.00
CA$292.00
CA$292.00 - CA$292.00
CA$292.00
CA$104.00 - CA$104.00
CA$104.00
CA$104.00 - CA$104.00
CA$104.00

Celestron FirstScope Signature Series Moon by Robert Reeves Telescope

CEL-22016

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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CA$104.00 - CA$104.00
CA$104.00
CA$104.00 - CA$104.00
CA$104.00
CA$973.00 - CA$973.00
CA$973.00
CA$973.00 - CA$973.00
CA$973.00

Celestron NexStar 130SLT Computerized Telescope

CEL-31145

130mm (5.12") Newtonian Reflector 650mm Focal Length, f/5 Focal Ratio Computerized GoTo Mount with 40,000 Object Database SkyAlign Technology for ...

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CA$973.00 - CA$973.00
CA$973.00
CA$973.00 - CA$973.00
CA$973.00
CA$1,029.00 - CA$1,029.00
CA$1,029.00
CA$1,029.00 - CA$1,029.00
CA$1,029.00

Celestron Omni XLT 150 Telescope

CEL-31057

150mm (5.91") Newtonian Reflector 750mm Focal Length (f/5) Omni CG-4 German Equatorial Mount StarBright XLT Optical Coatings 6x30 Optical Findersc...

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CA$1,029.00 - CA$1,029.00
CA$1,029.00
CA$1,029.00 - CA$1,029.00
CA$1,029.00
CA$278.00 - CA$278.00
CA$278.00
CA$278.00 - CA$278.00
CA$278.00

Celestron PowerSeeker 114EQ Telescope

CEL-21045

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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CA$278.00 - CA$278.00
CA$278.00
CA$278.00 - CA$278.00
CA$278.00
CA$320.00 - CA$320.00
CA$320.00
CA$320.00 - CA$320.00
CA$320.00

Celestron PowerSeeker 127EQ Telescope

CEL-21049
4 in stock

127mm (5") Newtonian Reflector 1000mm Focal Length f/7.87 Focal Ratio Manual German Equatorial Mount Includes 50x and 250x Eyepieces 3x Barlow Len...

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CA$320.00 - CA$320.00
CA$320.00
CA$320.00 - CA$320.00
CA$320.00
CA$2,223.00 - CA$2,223.00
CA$2,223.00
CA$2,223.00 - CA$2,223.00
CA$2,223.00

Celestron StarSense Explorer 12" Smartphone App-Enabled Dobsonian Telescope

CEL-22472
1 in stock

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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CA$2,223.00 - CA$2,223.00
CA$2,223.00
CA$2,223.00 - CA$2,223.00
CA$2,223.00
CA$528.00 - CA$528.00
CA$528.00
CA$528.00 - CA$528.00
CA$528.00

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

CEL-22480
1 in stock

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

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CA$528.00 - CA$528.00
CA$528.00
CA$528.00 - CA$528.00
CA$528.00
CA$667.00 - CA$667.00
CA$667.00
CA$667.00 - CA$667.00
CA$667.00

Celestron StarSense Explorer™ 130mm Smartphone App-Enabled Tabletop Dobsonian Telescope

CEL-22481

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

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CA$667.00 - CA$667.00
CA$667.00
CA$667.00 - CA$667.00
CA$667.00
CA$834.00 - CA$834.00
CA$834.00
CA$834.00 - CA$834.00
CA$834.00

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

CEL-22482

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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CA$834.00 - CA$834.00
CA$834.00
CA$834.00 - CA$834.00
CA$834.00
CA$695.00 - CA$695.00
CA$695.00
CA$695.00 - CA$695.00
CA$695.00

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

CEL-22461

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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CA$695.00 - CA$695.00
CA$695.00
CA$695.00 - CA$695.00
CA$695.00
CA$361.00 - CA$361.00
CA$361.00
CA$361.00 - CA$361.00
CA$361.00

Celestron StarSense Explorer™ LT 114AZ Smartphone App-Enabled Newtonian Reflector Telescope

CEL-22452

114mm (4.5") Newtonian Reflector optics 1000mm focal length (f/9) for high-contrast planetary views Patented StarSense Explorer app guides you to ...

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CA$361.00 - CA$361.00
CA$361.00
CA$361.00 - CA$361.00
CA$361.00
CA$1,667.00 - CA$1,667.00
CA$1,667.00
CA$1,667.00 - CA$1,667.00
CA$1,667.00

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

CEL-22471

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

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CA$1,667.00 - CA$1,667.00
CA$1,667.00
CA$1,667.00 - CA$1,667.00
CA$1,667.00
CA$1,222.00 - CA$1,222.00
CA$1,222.00
CA$1,222.00 - CA$1,222.00
CA$1,222.00

Celestron StarSense Explorer™ Smartphone App-Enabled Dobsonian Telescope - 8"

CEL-22470

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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CA$1,222.00 - CA$1,222.00
CA$1,222.00
CA$1,222.00 - CA$1,222.00
CA$1,222.00
Explore Scientific 10-inch f/5 Hybrid Truss Tube Dobsonian Telescope
CA$1,260.00 - CA$1,260.00
CA$1,260.00
CA$1,260.00 - CA$1,260.00
CA$1,260.00

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

ES-DOB1045C

254mm (10-inch) Aperture f/5 Newtonian Optical Design Hybrid Truss Tube for Portability Includes 25mm and 10mm Plössl Eyepieces Red-Dot Finder and...

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CA$1,260.00 - CA$1,260.00
CA$1,260.00
CA$1,260.00 - CA$1,260.00
CA$1,260.00

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.