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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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CA$363.99
CA$363.99 - CA$363.99
CA$363.99
CA$291.00
CA$291.00 - CA$291.00
CA$291.00

Explore Scientific 62° 40mm Waterproof Eyepiece - 2"

40mm Focal Length 62° Apparent Field of View 2" Diameter Barrel Waterproof & Argon-Purged Construction Flat-Field Multi-Element Optics Desc...

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CA$363.99
CA$363.99 - CA$363.99
CA$363.99
CA$291.00
CA$291.00 - CA$291.00
CA$291.00
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CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$78.00
CA$78.00 - CA$78.00
CA$78.00

Explore Scientific 62° 5.5mm Waterproof Eyepiece - 1.25"

5.5mm Focal Length 62° Apparent Field of View 1.25" Diameter Barrel Waterproof & Argon-Purged Flat-Field Multi-Element Design Description F...

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CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
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CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$78.00
CA$78.00 - CA$78.00
CA$78.00

Explore Scientific 62° 9mm Waterproof Eyepiece - 1.25"

9mm Focal Length 62° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Flat-Field Optical Design Description FAQ Speci...

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CA$97.99
CA$97.99 - CA$97.99
CA$97.99
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
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CA$153.99
CA$153.99 - CA$153.99
CA$153.99
CA$123.00
CA$123.00 - CA$123.00
CA$123.00

Explore Scientific 68° 16mm Waterproof Eyepiece - 1.25"

16mm Focal Length 68° Apparent Field of View 1.25" Barrel Diameter Waterproof & Argon-Purged Parfocal with 68° Series Eyepieces Long Eye Relie...

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CA$153.99
CA$153.99 - CA$153.99
CA$153.99
CA$123.00
CA$123.00 - CA$123.00
CA$123.00
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CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$168.00
CA$168.00 - CA$168.00
CA$168.00

Explore Scientific 82° 4.5mm LER Waterproof Eyepiece - 1.25"

82° Apparent Field of View 4.5mm High-Magnification Focal Length 15.9mm Long Eye Relief (LER) Argon-Purged Waterproof Construction 1.25" Barrel Di...

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CA$209.99
CA$209.99 - CA$209.99
CA$209.99
CA$168.00
CA$168.00 - CA$168.00
CA$168.00
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CA$279.99
CA$279.99 - CA$279.99
CA$279.99
CA$224.00
CA$224.00 - CA$224.00
CA$224.00

Explore Scientific 8x50 Illuminated Right Angle Polar Finder Scope

8x Magnification 50mm Aperture Right-Angle Eyepiece Erect-Image Optics Illuminated Polar Reticle for Northern & Southern Hemispheres Variable ...

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CA$279.99
CA$279.99 - CA$279.99
CA$279.99
CA$224.00
CA$224.00 - CA$224.00
CA$224.00
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CA$111.99
CA$111.99 - CA$111.99
CA$111.99
CA$78.00
CA$78.00 - CA$78.00
CA$78.00

Explore Scientific 8x50 Non-Illuminated Finder Scope

8x50 Optical Design Straight-Through Viewing Standard Crosshair Reticle 6° Field of View Compatible with Explore Scientific Finder Bases Descri...

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CA$111.99
CA$111.99 - CA$111.99
CA$111.99
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
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CA$251.99
CA$251.99 - CA$251.99
CA$251.99
CA$202.00
CA$202.00 - CA$202.00
CA$202.00

Explore Scientific 8x50 Straight Through Illuminated Viewfinder with Bracket

8x Magnification & 50mm Aperture Wide 6° True Field of View Illuminated, Open-Center Reticle with Measurement Scales Correct-Image View (Uprig...

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CA$251.99
CA$251.99 - CA$251.99
CA$251.99
CA$202.00
CA$202.00 - CA$202.00
CA$202.00
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CA$307.99
CA$307.99 - CA$307.99
CA$307.99
CA$246.00
CA$246.00 - CA$246.00
CA$246.00

Explore Scientific 99% Reflective Diagonal -2"

2-inch Diagonal Barrel with Tapered Safety Edge 99% Reflectivity from Dielectric Coatings Includes 1.25-inch Eyepiece Adapter Compression Ring Loc...

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CA$307.99
CA$307.99 - CA$307.99
CA$307.99
CA$246.00
CA$246.00 - CA$246.00
CA$246.00
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CA$825.99
CA$825.99 - CA$825.99
CA$825.99
CA$661.00
CA$661.00 - CA$661.00
CA$661.00

Explore Scientific 99% Reflective Diagonal -3"

3-inch diagonal body for large format focusers 99% reflectivity from durable dielectric coatings Includes a 2-inch eyepiece adapter with compressi...

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CA$825.99
CA$825.99 - CA$825.99
CA$825.99
CA$661.00
CA$661.00 - CA$661.00
CA$661.00
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CA$629.99
CA$629.99 - CA$629.99
CA$629.99
CA$504.00
CA$504.00 - CA$504.00
CA$504.00

Explore Scientific AR102 Doublet Refractor

102mm (4-inch) Aperture f/6.5 Focal Ratio 11.5 lbs Optical Tube Weight Two-Speed 2" Crayford Focuser Includes 2" Dielectric Diagonal & 8x50 Fi...

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CA$629.99
CA$629.99 - CA$629.99
CA$629.99
CA$504.00
CA$504.00 - CA$504.00
CA$504.00
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CA$1,049.99
CA$1,049.99 - CA$1,049.99
CA$1,049.99
CA$840.00
CA$840.00 - CA$840.00
CA$840.00

Explore Scientific AR127 Doublet Refractor

127mm Achromatic Doublet Refractor Air-Spaced Crown-and-Flint Optics Dual-Speed Focuser for Fine Adjustment Dielectric-Coated Diagonal Included Cr...

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CA$1,049.99
CA$1,049.99 - CA$1,049.99
CA$1,049.99
CA$840.00
CA$840.00 - CA$840.00
CA$840.00
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Explore Scientific Backpack Carrying Case
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CA$112.00
CA$112.00 - CA$112.00
CA$112.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00

Explore Scientific Backpack Carrying Case

Customizable Padded Main Compartment External Tripod-Carry Straps Dedicated Pockets for Accessories and Charts Designed for Select Explore Scienti...

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CA$112.00
CA$112.00 - CA$112.00
CA$112.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
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Explore Scientific BT 82mm ED Giant Binocular
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CA$4,620.00
CA$4,620.00 - CA$4,620.00
CA$4,620.00
CA$3,696.00
CA$3,696.00 - CA$3,696.00
CA$3,696.00

Explore Scientific BT 82mm ED Giant Binocular

Dual 82mm Extra-Low Dispersion (ED) Objective Lenses Reduces Chromatic Aberration for Color-True Images Accepts Standard 1.25" Interchangeable Eye...

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CA$4,620.00
CA$4,620.00 - CA$4,620.00
CA$4,620.00
CA$3,696.00
CA$3,696.00 - CA$3,696.00
CA$3,696.00
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Explore Scientific BT-120 SF Large Binoculars
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CA$3,500.00
CA$3,500.00 - CA$3,500.00
CA$3,500.00
CA$2,800.00
CA$2,800.00 - CA$2,800.00
CA$2,800.00

Explore Scientific BT-120 SF Large Binoculars

Large-Aperture Binocular Telescope Design Angled Eyepiece Holders for Comfortable Viewing Accepts Standard 1.25" Eyepieces Nitrogen-Purged, Waterp...

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CA$3,500.00
CA$3,500.00 - CA$3,500.00
CA$3,500.00
CA$2,800.00
CA$2,800.00 - CA$2,800.00
CA$2,800.00
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Explore Scientific BT-120mm ED Giant Binocular
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CA$7,770.00
CA$7,770.00 - CA$7,770.00
CA$7,770.00
CA$6,216.00
CA$6,216.00 - CA$6,216.00
CA$6,216.00

Explore Scientific BT-120mm ED Giant Binocular

Twin 120mm ED Glass Objectives Interchangeable 1.25" Eyepiece Holders Includes Starter Eyepiece Pair Reduces Eye Strain for Long Sessions Requires...

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CA$7,770.00
CA$7,770.00 - CA$7,770.00
CA$7,770.00
CA$6,216.00
CA$6,216.00 - CA$6,216.00
CA$6,216.00
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Explore Scientific BT-70 SF Large Binoculars with 62 Degree LER Eyepieces
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CA$2,380.00
CA$2,380.00 - CA$2,380.00
CA$2,380.00
CA$1,904.00
CA$1,904.00 - CA$1,904.00
CA$1,904.00

Explore Scientific BT-70 SF Large Binoculars with 62 Degree LER Eyepieces

Large Aperture Objective Lenses Interchangeable 1.25" Eyepiece Compatibility Comfortable 45-Degree Angled Viewing Waterproof and Nitrogen-Purged M...

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CA$2,380.00
CA$2,380.00 - CA$2,380.00
CA$2,380.00
CA$1,904.00
CA$1,904.00 - CA$1,904.00
CA$1,904.00
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CA$111.99
CA$111.99 - CA$111.99
CA$111.99
CA$90.00
CA$90.00 - CA$90.00
CA$90.00

Explore Scientific Camera Dovetail Plate

Adapts cameras to any standard Vixen-style saddle Multiple slotted mounting points for precise balancing Includes a standard camera mounting bolt ...

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CA$111.99
CA$111.99 - CA$111.99
CA$111.99
CA$90.00
CA$90.00 - CA$90.00
CA$90.00
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CA$41.99
CA$41.99 - CA$41.99
CA$41.99
CA$34.00
CA$34.00 - CA$34.00
CA$34.00

Explore Scientific Camera-Ring M48x0.75 for Canon EOS

Connects Canon EOS cameras to M48x0.75 accessories Optimized for full-frame sensors to eliminate vignetting Wider clear aperture than standard M42...

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CA$41.99
CA$41.99 - CA$41.99
CA$41.99
CA$34.00
CA$34.00 - CA$34.00
CA$34.00
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Explore Scientific Counterweight 5 Pounds
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CA$84.00
CA$84.00 - CA$84.00
CA$84.00
CA$67.00
CA$67.00 - CA$67.00
CA$67.00

Explore Scientific Counterweight 5 Pounds

Weight: 5 pounds Compatibility: Explore Scientific EXOS-2 and EXOS-2GT Mounts Locking Mechanism: Large, secure hand-tightening knob Finish: Black ...

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CA$84.00
CA$84.00 - CA$84.00
CA$84.00
CA$67.00
CA$67.00 - CA$67.00
CA$67.00
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CA$69.99
CA$69.99 - CA$69.99
CA$69.99
CA$56.00
CA$56.00 - CA$56.00
CA$56.00

Explore Scientific Counterweight Set for Truss Tube DOB

Counterweight Set for ES Truss Tube Dobsonians Includes Two Counterweights Balances Heavy Accessory Loads Direct-Fit Installation on Primary Mirro...

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CA$69.99
CA$69.99 - CA$69.99
CA$69.99
CA$56.00
CA$56.00 - CA$56.00
CA$56.00
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Explore Scientific Dark-Sky Filter 77mm Slim
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CA$252.00
CA$252.00 - CA$252.00
CA$252.00
CA$202.00
CA$202.00 - CA$202.00
CA$202.00

Explore Scientific Dark-Sky Filter 77mm Slim

77mm Standard Filter Thread Slim Profile Prevents Vignetting Optimized for Wide-Angle Lenses Suppresses Sodium Vapor Streetlight Glow Enhances Con...

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CA$252.00
CA$252.00 - CA$252.00
CA$252.00
CA$202.00
CA$202.00 - CA$202.00
CA$202.00
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Explore Scientific Dobsonian Shroud for 10" and 12" Truss Tube DOB Telescope
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CA$140.00
CA$140.00 - CA$140.00
CA$140.00
CA$112.00
CA$112.00 - CA$112.00
CA$112.00

Explore Scientific Dobsonian Shroud for 10" and 12" Truss Tube DOB Telescope

Fits 10" and 12" Truss Tube Dobsonian Telescopes Blocks Stray Light to Significantly Increase Image Contrast Constructed from Opaque, Stretchable ...

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CA$140.00
CA$140.00 - CA$140.00
CA$140.00
CA$112.00
CA$112.00 - CA$112.00
CA$112.00
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Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope
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CA$1,400.00
CA$1,400.00 - CA$1,400.00
CA$1,400.00
CA$1,120.00
CA$1,120.00 - CA$1,120.00
CA$1,120.00

Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope

102mm Aperture f/7 Focal Ratio Air-Spaced Triplet Apochromatic Optics Genuine HOYA FCD1 ED Glass 2" Rack-and-Pinion Focuser Description FAQ Spe...

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CA$1,400.00
CA$1,400.00 - CA$1,400.00
CA$1,400.00
CA$1,120.00
CA$1,120.00 - CA$1,120.00
CA$1,120.00
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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.