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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Réflecteurs

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.

Filtres

$1,099.00 - $1,099.00
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$1,099.00 - $1,099.00
$1,099.00

Askar N160 f/3.6 Newtonian

ASK-N160
1 en 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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$1,099.00 - $1,099.00
$1,099.00
$1,099.00 - $1,099.00
$1,099.00
$1,299.00 - $1,299.00
$1,299.00
$1,299.00 - $1,299.00
$1,299.00

Celestron Advanced VX Newtonien 6"

CEL-32054

Caractéristiques La conception optique de 6" (150 mm) f/5 offre d'excellentes vues à large champ Le miroir primaire parabolique minimise l'aberr...

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$1,299.00 - $1,299.00
$1,299.00
$1,299.00 - $1,299.00
$1,299.00
$1,599.00 - $1,599.00
$1,599.00
$1,599.00 - $1,599.00
$1,599.00

Celestron Advanced VX Newtonien 8"

CEL-32062

Caractéristiques La conception optique de 8" (200 mm) f/5 offre d'excellentes vues à large champ Le miroir primaire parabolique minimise l'aber...

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$1,599.00 - $1,599.00
$1,599.00
$1,599.00 - $1,599.00
$1,599.00
$599.95 - $599.95
$599.95
$599.95 - $599.95
$599.95

Celestron Astro Fi Newtonien 130mm - Wifi GoTo

CEL-22203

Caractéristiques Télescope newtonien de 130 mm avec optique en verre entièrement revêtue Contrôlez votre télescope via le Wi-Fi intégré à l'aid...

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$599.95 - $599.95
$599.95
$599.95 - $599.95
$599.95
$329.95 - $329.95
$329.95
$329.95 - $329.95
$329.95

Celestron AstroMaster 114EQ

CEL-31042

Caractéristiques Monture équatoriale allemande manuelle avec cercles de réglage pour localiser et suivre avec précision les objets du ciel Trépi...

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$329.95 - $329.95
$329.95
$329.95 - $329.95
$329.95
$359.95 - $359.95
$359.95
$359.95 - $359.95
$359.95

Celestron AstroMaster 130EQ

CEL-31045
1 en stock

Caractéristiques Monture équatoriale allemande manuelle avec cercles de réglage - pour localiser et suivre les objets du ciel Trépied en acier p...

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$359.95 - $359.95
$359.95
$359.95 - $359.95
$359.95
$389.95 - $389.95
$389.95
$389.95 - $389.95
$389.95

Celestron AstroMaster 130EQ-MD (Motorisé)

CEL-31051

Caractéristiques Monture équatoriale allemande manuelle avec cercles de réglage - pour localiser et suivre avec précision les objets du ciel Tré...

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$389.95 - $389.95
$389.95
$389.95 - $389.95
$389.95
$134.95 - $134.95
$134.95
$134.95 - $134.95
$134.95

Celestron AstroMaster LT 76AZ

CEL-31036

Caractéristiques Installation rapide et facile sans outil StarPointer pour plus de commodité Fixation en queue d'aronde à dégagement rapide ...

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$134.95 - $134.95
$134.95
$134.95 - $134.95
$134.95
$209.95 - $209.95
$209.95
$209.95 - $209.95
$209.95

Celestron ExploreScope 114AZ

CEL-22103

Caractéristiques Télescope à réflecteur newtonien manuel de 114 mm avec optique en verre entièrement revêtu et cadre léger. Observez en un rien ...

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$209.95 - $209.95
$209.95
$209.95 - $209.95
$209.95
$699.95 - $699.95
$699.95
$699.95 - $699.95
$699.95

Celestron NexStar 130SLT GoTo

CEL-31145

Caractéristiques Réflecteur newtonien 130 mm de haute qualité Monture Altazimuth Altazimuth entièrement informatisée Chercheur à point rouge St...

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$699.95 - $699.95
$699.95
$699.95 - $699.95
$699.95
$739.95 - $739.95
$739.95
$739.95 - $739.95
$739.95

Celestron Omni XLT 150

CEL-31057

Caractéristiques Les optiques de haute qualité commencent par la sélection manuelle de chaque lentille et/ou miroir afin que seule la meilleure q...

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$739.95 - $739.95
$739.95
$739.95 - $739.95
$739.95
$4,299.00 - $4,299.00
$4,299.00
$4,299.00 - $4,299.00
$4,299.00

Celestron Origin Mark II - Intelligent Home Observatory

CEL-12100

152mm (6") Rowe-Ackermann Schmidt Astrograph (RASA) Optics Ultra-Fast f/2.2 Focal Ratio for Short Exposures 8.3 Megapixel Sony IMX678 Color CMOS S...

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$4,299.00 - $4,299.00
$4,299.00
$4,299.00 - $4,299.00
$4,299.00
$199.95 - $199.95
$199.95
$199.95 - $199.95
$199.95

Celestron PowerSeeker 114EQ

CEL-21045

Caractéristiques Monture équatoriale allemande manuelle avec cercles de réglage pour localiser et suivre les objets du ciel Trépied en acier ple...

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$199.95 - $199.95
$199.95
$199.95 - $199.95
$199.95
$229.95 - $229.95
$229.95
$229.95 - $229.95
$229.95

Celestron PowerSeeker 127EQ

CEL-21049
4 en stock

Caractéristiques Monture équatoriale allemande manuelle avec cercles de réglage pour localiser et suivre avec précision les objets du ciel Trép...

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$229.95 - $229.95
$229.95
$229.95 - $229.95
$229.95
$499.95 - $499.95
$499.95
$499.95 - $499.95
$499.95

Celestron StarSense Explorer™ DX 130AZ Newtonien

CEL-22461

Caractéristiques Libérez la puissance de votre smartphone pour vous emmener dans une visite guidée du ciel nocturne - aucune expérience de télesc...

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$499.95 - $499.95
$499.95
$499.95 - $499.95
$499.95
$259.95 - $259.95
$259.95
$259.95 - $259.95
$259.95

Celestron StarSense Explorer™ LT 114AZ Newtonien

CEL-22452

Caractéristiques Libérez la puissance de votre smartphone pour vous emmener dans une visite guidée du ciel nocturne - aucune expérience de télesc...

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$259.95 - $259.95
$259.95
$259.95 - $259.95
$259.95
Explore Scientific 114mm Newtonian Reflector Telescope with Equatorial Mount
$199.99 - $199.99
$199.99
$199.99 - $199.99
$199.99

Explore Scientific 114mm Newtonian Reflector Telescope with Equatorial Mount

ES-ON11444EQ3
1 en stock

114mm (4.5") primary mirror gathers ample light for planets and bright deep-sky objects Fast f/4.4 focal ratio provides expansive, wide-field view...

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$199.99 - $199.99
$199.99
$199.99 - $199.99
$199.99
Explore Scientific 6-inch Dobsonian Reflector Telescope
$499.99 - $499.99
$499.99
$499.99 - $499.99
$499.99

Explore Scientific 6-inch Dobsonian Reflector Telescope

ES-ON15476

154mm (6-inch) Primary Mirror 1170mm Focal Length f/7.6 Focal Ratio 2-inch Crayford-style Focuser with 1.25-inch Adapter Dobsonian Mount with Spri...

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$499.99 - $499.99
$499.99
$499.99 - $499.99
$499.99
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific FirstLight Newtonien 114mm avec Monture EQ3

ES-FL-N114500EQ3
2 en stock

Que vous cherchiez à vous plonger dans les détails de notre système solaire ou à explorer des trésors inspirants du ciel profond, la série polyval...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
Explore Scientific Sidara Essential 130 Telescope
$399.99 - $399.99
$399.99
$399.99 - $399.99
$399.99

Explore Scientific Sidara Essential 130 Telescope

ES-N130650-MAZ01-ST10

130mm (5.1") Newtonian Reflector Optics 650mm Focal Length (f/5) Essential Alt-Azimuth Mount Dual-Axis Slow-Motion Controls Integrated SkyAssist N...

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$399.99 - $399.99
$399.99
$399.99 - $399.99
$399.99
Explore Scientific Sidara Nano 114 Telescope
$199.99 - $199.99
$199.99
$199.99 - $199.99
$199.99

Explore Scientific Sidara Nano 114 Telescope

ES-N114500-MAZ-NANO

114mm Newtonian Reflector Optics Lightweight Nano Alt-Azimuth Mount Slow-Motion Controls for Precise Tracking Integrated SkyAssist Navigation Aid ...

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$199.99 - $199.99
$199.99
$199.99 - $199.99
$199.99
Explore Scientific Sidara Plus 150 Reflector Telescope
$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99

Explore Scientific Sidara Plus 150 Reflector Telescope

ES-N150750-MAZ01

150mm Newtonian Reflector 750mm Focal Length (f/5) Nano Alt-Azimuth Mount Smooth Slow-Motion Controls SkyAssist Navigation Aid Description FAQ ...

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$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99
$458.00 - $458.00
$458.00
$458.00 - $458.00
$458.00

iOptron 150mm f/4 Imagerie Newtonienne

IOP-6311

L'ensemble de tube optique newtonien (OTA) de 150 mm (environ 6") f/4 d'iOptron avec un rapport focal rapide F/4 est parfait pour l'imagerie d'obj...

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$458.00 - $458.00
$458.00
$458.00 - $458.00
$458.00
$628.00 - $628.00
$628.00
$628.00 - $628.00
$628.00

iOptron 200mm f/4 Imagerie Newtonienne

IOP-6312

L'ensemble de tube optique newtonien (OTA) de 200 mm (environ 7,9") f/4 d'iOptron avec un rapport focal rapide F/4 est parfait pour l'imagerie d'o...

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$628.00 - $628.00
$628.00
$628.00 - $628.00
$628.00

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.