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Sales & Clearance

Astronomy sales at David Astro, current markdowns across the catalogue, including open-box units, discontinued models still fully supported, and overstock we would rather see on a telescope than on a shelf. Everything here is held in Canadian stock and carries the same warranty and support as full-price inventory.

Reduced price does not mean reduced service. We will still calculate your back-focus, confirm compatibility and support the item after the sale, exactly as we would for anything else in the catalogue.

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Original price CA$70.00
Original price CA$70.00 - Original price CA$70.00
Original price CA$70.00
Current price CA$49.00
CA$49.00 - CA$49.00
Current price CA$49.00

Explore Scientific Replacement Illuminator for Polar Finder EXOS2/EXOS2GT

Deep Red LED Illumination Variable Brightness Control Fits Explore Scientific 50mm Reticle Finder Scopes Compatible with EXOS2 & EXOS2GT Mount...

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Original price CA$70.00
Original price CA$70.00 - Original price CA$70.00
Original price CA$70.00
Current price CA$49.00
CA$49.00 - CA$49.00
Current price CA$49.00
Save 30% Save %
Original price CA$182.00
Original price CA$182.00 - Original price CA$182.00
Original price CA$182.00
Current price CA$146.00
CA$146.00 - CA$146.00
Current price CA$146.00

Explore Scientific Right Ascension Drive for EQ3 Mounts

Adds automatic Right Ascension tracking to manual mounts Keeps celestial objects centered in the eyepiece Ideal for high-magnification planetary a...

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Original price CA$182.00
Original price CA$182.00 - Original price CA$182.00
Original price CA$182.00
Current price CA$146.00
CA$146.00 - CA$146.00
Current price CA$146.00
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Original price CA$56.00
Original price CA$56.00 - Original price CA$56.00
Original price CA$56.00
Current price CA$45.00
CA$45.00 - CA$45.00
Current price CA$45.00

Explore Scientific Soft-Sided Eyepiece Case - EPWP KIT Case

Soft-sided, compact design for easy transport Layered EVA foam and rigid PE board for protection Keeps contents from shifting between compartments...

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Original price CA$56.00
Original price CA$56.00 - Original price CA$56.00
Original price CA$56.00
Current price CA$45.00
CA$45.00 - CA$45.00
Current price CA$45.00
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Original price CA$294.00
Original price CA$294.00 - Original price CA$294.00
Original price CA$294.00
Current price CA$206.00
CA$206.00 - CA$206.00
Current price CA$206.00

Explore Scientific Soft-Sided Telescope Case

Designed for ED127, ED127CF, DAR127 & DAR152 Models Adjustable Velcro Compartments for Telescope & Accessories Padded Polyester Outer Shel...

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Original price CA$294.00
Original price CA$294.00 - Original price CA$294.00
Original price CA$294.00
Current price CA$206.00
CA$206.00 - CA$206.00
Current price CA$206.00
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Original price CA$8.00
Original price CA$8.00 - Original price CA$8.00
Original price CA$8.00
Current price CA$7.00
CA$7.00 - CA$7.00
Current price CA$7.00

Explore Scientific Solar Filter/Sun Shade for Galileoscope Refractor Telescope STEM Kit

Designed for the Galileoscope STEM Kit Enables Safe, Direct Observation of the Sun Features Durable, Tear-Resistant Solarlite Film Produces a Cons...

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Original price CA$8.00
Original price CA$8.00 - Original price CA$8.00
Original price CA$8.00
Current price CA$7.00
CA$7.00 - CA$7.00
Current price CA$7.00
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Original price CA$35.00
Original price CA$35.00 - Original price CA$35.00
Original price CA$35.00
Current price CA$25.00
CA$25.00 - CA$25.00
Current price CA$25.00

Explore Scientific Tirion Double-Sided Multi-Latitude Planisphere

Double-Sided Design Reduces Distortion Multi-Latitude for Northern Hemisphere Observers Celestial Cartography by Wil Tirion Durable Plastic Constr...

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Original price CA$35.00
Original price CA$35.00 - Original price CA$35.00
Original price CA$35.00
Current price CA$25.00
CA$25.00 - CA$25.00
Current price CA$25.00
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Original price CA$419.99
Original price CA$419.99 - Original price CA$419.99
Original price CA$419.99
Current price CA$336.00
CA$336.00 - CA$336.00
Current price CA$336.00

Explore Scientific Twilight I Adjustable Angle Alt-Azimuth Mount

Light-to-medium-duty alt-azimuth mount Supports telescopes up to 18 lb (8.2 kg) Adjustable angle head for zenith clearance Manual slow-motion cont...

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Original price CA$419.99
Original price CA$419.99 - Original price CA$419.99
Original price CA$419.99
Current price CA$336.00
CA$336.00 - CA$336.00
Current price CA$336.00
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Original price CA$252.00
Original price CA$252.00 - Original price CA$252.00
Original price CA$252.00
Current price CA$202.00
CA$202.00 - CA$202.00
Current price CA$202.00

Explore Scientific Twilight Medium Duty Tripod (Black)

Direct Stability Upgrade for the iEXOS-100 Mount Increases Payload Capacity for Heavier Equipment Adjustable Stainless Steel Legs Die-Cast Aluminu...

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Original price CA$252.00
Original price CA$252.00 - Original price CA$252.00
Original price CA$252.00
Current price CA$202.00
CA$202.00 - CA$202.00
Current price CA$202.00
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Original price CA$1,050.00
Original price CA$1,050.00 - Original price CA$1,050.00
Original price CA$1,050.00
Current price CA$840.00
CA$840.00 - CA$840.00
Current price CA$840.00

Explore Scientific U-Mount with Tripod for Large Binoculars

Designed for large astronomy and terrestrial binoculars U-Mount head with adjustable friction on both axes Heavy-duty field tripod with steel and ...

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Original price CA$1,050.00
Original price CA$1,050.00 - Original price CA$1,050.00
Original price CA$1,050.00
Current price CA$840.00
CA$840.00 - CA$840.00
Current price CA$840.00
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Original price CA$154.00
Original price CA$154.00 - Original price CA$154.00
Original price CA$154.00
Current price CA$108.00
CA$108.00 - CA$108.00
Current price CA$108.00

Explore Scientific USB Power Bank with Red LED Flashlight

Rechargeable Lithium-Ion Battery 12V DC and 5V USB Power Outputs Integrated Red LED Flashlight Rugged, Impact-Resistant Housing Multi-Level Power ...

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Original price CA$154.00
Original price CA$154.00 - Original price CA$154.00
Original price CA$154.00
Current price CA$108.00
CA$108.00 - CA$108.00
Current price CA$108.00
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Original price CA$1,253.00 - Original price CA$1,393.00
Original price CA$1,270.00
CA$1,049.00 - CA$1,393.00
CA$1,049.00 - CA$1,393.00
Current price CA$1,049.00

Lunt 40mm Solar Telescope

40mm Aperture 400mm Focal Length (f/10) 0.45 Angstrom Bandpass External, Tilt-Tuned Etalon Multiple Blocking Filter Options (B500, B600, B1200) ...

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Original price CA$1,253.00 - Original price CA$1,393.00
Original price CA$1,270.00
CA$1,049.00 - CA$1,393.00
CA$1,049.00 - CA$1,393.00
Current price CA$1,049.00
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Original price CA$53.00
Original price CA$53.00 - Original price CA$53.00
Original price CA$53.00
Current price CA$34.00
CA$34.00 - CA$34.00
Current price CA$34.00

Moon Map Poster - 24" x 36"

Every astronomer should have at his disposition a detailed map of our only natural satellite: the Moon. Our map is based on thousands of images ...

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Original price CA$53.00
Original price CA$53.00 - Original price CA$53.00
Original price CA$53.00
Current price CA$34.00
CA$34.00 - CA$34.00
Current price CA$34.00
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Original price CA$804.00
Original price CA$804.00 - Original price CA$804.00
Original price CA$804.00
Current price CA$599.00
CA$599.00 - CA$599.00
Current price CA$599.00

Optec Flip-Flat Motorized Flat Panel

In good condition. Comes with original packaging Works with OTA dew shields up to 7-5/8" (194mm) Illumination up to 170mm

Original price CA$804.00
Original price CA$804.00 - Original price CA$804.00
Original price CA$804.00
Current price CA$599.00
CA$599.00 - CA$599.00
Current price CA$599.00
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Original price CA$411.00 - Original price CA$411.00
Original price CA$411.00
CA$711.00
CA$711.00 - CA$711.00
Current price CA$711.00

Orion Optics UK 150mm Dobsonian Mount

Designed for 150mm Newtonian Telescopes Classic Dobsonian Alt-Azimuth Design Intuitive Point-and-View Operation Stable, Ground-Based Platform Manu...

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Original price CA$411.00 - Original price CA$411.00
Original price CA$411.00
CA$711.00
CA$711.00 - CA$711.00
Current price CA$711.00
Original price CA$498.00 - Original price CA$601.00
Original price CA$498.00
CA$578.00 - CA$681.00
CA$578.00 - CA$681.00
Current price CA$578.00

Orion Optics UK 150mm F/4 Mirror

150mm aperture, f/4 Research grade, 1/8 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

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Original price CA$498.00 - Original price CA$601.00
Original price CA$498.00
CA$578.00 - CA$681.00
CA$578.00 - CA$681.00
Current price CA$578.00
Original price CA$291.00 - Original price CA$601.00
Original price CA$291.00
CA$371.00 - CA$681.00
CA$371.00 - CA$681.00
Current price CA$371.00

Orion Optics UK 150mm F/5 Mirror

150mm aperture, f/5 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

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Original price CA$291.00 - Original price CA$601.00
Original price CA$291.00
CA$371.00 - CA$681.00
CA$371.00 - CA$681.00
Current price CA$371.00
Original price CA$307.00 - Original price CA$597.00
Original price CA$307.00
CA$387.00 - CA$677.00
CA$387.00 - CA$677.00
Current price CA$387.00

Orion Optics UK 150mm F/8 Mirror

150mm aperture, f/8 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

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Original price CA$307.00 - Original price CA$597.00
Original price CA$307.00
CA$387.00 - CA$677.00
CA$387.00 - CA$677.00
Current price CA$387.00
Original price CA$490.00 - Original price CA$490.00
Original price CA$490.00
CA$790.00
CA$790.00 - CA$790.00
Current price CA$790.00

Orion Optics UK 200mm Dobsonian Mount

Designed for 200mm (8-inch) Newtonian Telescopes Accepts Optical Tubes up to 225mm in Diameter Classic Dobsonian Rocker-Box Design Provides a Stab...

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Original price CA$490.00 - Original price CA$490.00
Original price CA$490.00
CA$790.00
CA$790.00 - CA$790.00
Current price CA$790.00
Original price CA$601.00 - Original price CA$1,036.00
Original price CA$601.00
CA$681.00 - CA$1,116.00
CA$681.00 - CA$1,116.00
Current price CA$681.00

Orion Optics UK 200mm F/4.5 Mirror

200mm aperture, f/4.5 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

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Original price CA$601.00 - Original price CA$1,036.00
Original price CA$601.00
CA$681.00 - CA$1,116.00
CA$681.00 - CA$1,116.00
Current price CA$681.00
Original price CA$589.00 - Original price CA$981.00
Original price CA$589.00
CA$669.00 - CA$1,061.00
CA$669.00 - CA$1,061.00
Current price CA$669.00

Orion Optics UK 200mm F/6 Mirror

200mm aperture, f/6 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descriptio...

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Original price CA$589.00 - Original price CA$981.00
Original price CA$589.00
CA$669.00 - CA$1,061.00
CA$669.00 - CA$1,061.00
Current price CA$669.00
Original price CA$501.00 - Original price CA$501.00
Original price CA$501.00
CA$801.00
CA$801.00 - CA$801.00
Current price CA$801.00

Orion Optics UK 250mm Dobsonian Mount

Designed for 250mm (10-inch) class Newtonian telescopes Accepts optical tubes with an outer diameter up to 280mm Classic Dobsonian rocker box desi...

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Original price CA$501.00 - Original price CA$501.00
Original price CA$501.00
CA$801.00
CA$801.00 - CA$801.00
Current price CA$801.00
Original price CA$778.00 - Original price CA$1,542.00
Original price CA$778.00
CA$858.00 - CA$1,622.00
CA$858.00 - CA$1,622.00
Current price CA$858.00

Orion Optics UK 250mm F/4.8 Mirror

250mm aperture, f/4.8 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

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Original price CA$778.00 - Original price CA$1,542.00
Original price CA$778.00
CA$858.00 - CA$1,622.00
CA$858.00 - CA$1,622.00
Current price CA$858.00
Original price CA$840.00 - Original price CA$1,604.00
Original price CA$840.00
CA$920.00 - CA$1,684.00
CA$920.00 - CA$1,684.00
Current price CA$920.00

Orion Optics UK 250mm F/6.3 Mirror

250mm aperture, f/6.3 Standard grade, 1/4 PV wavefront accuracy Hand-figured in the UK Supplied with a Zygo interferometer test report Descript...

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Original price CA$840.00 - Original price CA$1,604.00
Original price CA$840.00
CA$920.00 - CA$1,684.00
CA$920.00 - CA$1,684.00
Current price CA$920.00
Original price CA$635.00 - Original price CA$635.00
Original price CA$635.00
CA$935.00
CA$935.00 - CA$935.00
Current price CA$935.00

Orion Optics UK 300mm Dobsonian Mount

Designed for Optical Tubes up to 236mm in Diameter Classic Dobsonian Alt-Azimuth Design Provides a Stable, Vibration-Free Platform Ideal for High-...

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Original price CA$635.00 - Original price CA$635.00
Original price CA$635.00
CA$935.00
CA$935.00 - CA$935.00
Current price CA$935.00

What Goes on Sale and Why

Understanding why an item is discounted helps you judge whether it is the right purchase, so we are explicit about the reason wherever we can be.

  • Open-box and display units: Returned or demonstrated equipment that has been inspected and tested here, typically indistinguishable from new in use.
  • Superseded models: Products replaced by a newer revision, often with only minor changes and full parts and warranty support remaining.
  • Overstock: Items we hold more of than current demand justifies, discounted while the stock lasts.
  • Seasonal accessories: Dew control, cases and cold-weather items that move seasonally and are reduced outside their peak.
  • End-of-line accessories: Adapters, rings and small parts from lines being retired, which remain perfectly serviceable.
  • Used equipment: Our separate collection of tested second-hand gear, for buyers comfortable with pre-owned optics and mounts.

Why Choose David Astro for Discounted Astronomy Gear

A discount is only a good deal if the item is right for your setup and stays supported afterwards.

  • Compatibility checked before you commit: We will confirm a sale item actually fits your telescope or mount, because a bargain adapter that does not fit is not a bargain.
  • Condition stated honestly: Open-box and display items are described as what they are, with any cosmetic marks noted.
  • Full warranty on new items: Discounted new stock carries the same manufacturer warranty as anything else we sell, handled domestically.
  • Same support after the sale: Setup help, spacing calculations and in-house diagnostics apply to discounted purchases too.

Astronomy Sales in Canada: Frequently Asked Questions

Do sale items carry a warranty?

New discounted items carry the full manufacturer warranty. Open-box items are covered as stated on the listing, and we handle any claim domestically rather than routing it internationally.

Is an open-box item risky?

Not in our experience. Everything is inspected and functionally tested here before it is relisted, and anything with a cosmetic mark is described. Optics are checked for coating condition and collimation.

Can I still get support on a discontinued model?

Generally yes. We stock spare parts and adapters for many superseded models, and we say on the listing where parts availability is limited.

How long do sale prices last?

Until the stock is gone. These are finite quantities rather than a recurring promotion, so an item that disappears from this collection has usually sold rather than returned to full price.

Found something here?

Ask us before you order and we will confirm it fits your setup. Canadian stock, full support.