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Sales

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$658.00
CA$658.00 - CA$658.00
CA$658.00
CA$300.00
CA$300.00 - CA$300.00
CA$300.00

Astrodon H-alpha Filter - 5nm

DON-HA5_31R
Only 1 left!

H-α (hydrogen-alpha) at 656 nm (nanometers) is deep red in color and the most popular narrowband filter. Hydrogen is ubiquitous in the cosmos and i...

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CA$658.00
CA$658.00 - CA$658.00
CA$658.00
CA$300.00
CA$300.00 - CA$300.00
CA$300.00
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CA$658.00
CA$658.00 - CA$658.00
CA$658.00
CA$300.00
CA$300.00 - CA$300.00
CA$300.00

Astrodon SII Filter - 5nm

DON-SII5_31R
Only 1 left!

If you want the look of Hubble Space Telescope (HST) images, such as the famous “Pillars of Creation” (the Eagle Nebula, Messier 16), then the next...

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CA$658.00
CA$658.00 - CA$658.00
CA$658.00
CA$300.00
CA$300.00 - CA$300.00
CA$300.00
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Save 49% Save %
CA$388.00
CA$388.00 - CA$388.00
CA$388.00
CA$199.00
CA$199.00 - CA$199.00
CA$199.00

Baader 4nm 1.25" Ultra-Narrowband OIII Filter - CMOS-Optimized (USED)

BAA-2961400-125-USED
Only 1 left!

In perfect condition, used Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmo...

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CA$388.00
CA$388.00 - CA$388.00
CA$388.00
CA$199.00
CA$199.00 - CA$199.00
CA$199.00
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CA$265.00
CA$265.00 - CA$265.00
CA$265.00
CA$149.00
CA$149.00 - CA$149.00
CA$149.00

Baader 6.5nm 36mm H-alpha Filter - CMOS-Optimized (OPEN BOX)

BAA-2961100-36-OPENBOX
Only 1 left!

Isolates the 656.3nm H-alpha emission line 6.5nm bandpass for high-contrast imaging 36mm unmounted format for filter wheels CMOS-optimized to supp...

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CA$265.00
CA$265.00 - CA$265.00
CA$265.00
CA$149.00
CA$149.00 - CA$149.00
CA$149.00
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CA$420.00
CA$420.00 - CA$420.00
CA$420.00
CA$249.00
CA$249.00 - CA$249.00
CA$249.00

Baader LRGB 31mm Unmounted Filter Set (OPEN BOX)

BAA-2459474-OPENBOX
Only 1 left!

In perfect condition, open box Filter size 31 mm - round, unmounted - filter thickness 2 mm Set of L-R-G-B filters High-quality anti-reflective ...

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CA$420.00
CA$420.00 - CA$420.00
CA$420.00
CA$249.00
CA$249.00 - CA$249.00
CA$249.00
Save 41% Save %
Save 22% Save %
CA$37.00
CA$37.00 - CA$37.00
CA$37.00
CA$29.00
CA$29.00 - CA$29.00
CA$29.00

Baader T-Ring Nikon - T-2 - Used

U-BAA-2408300
Only 1 left!

Like new! Baader T-Ring to connect Nikon DSLR cameras onto the Astro T-2 system Results in the standard exact distance of 55.0mm from the front fac...

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CA$37.00
CA$37.00 - CA$37.00
CA$37.00
CA$29.00
CA$29.00 - CA$29.00
CA$29.00
Save 22% Save %
Save 11% Save %
CA$3,613.00
CA$3,613.00 - CA$3,613.00
CA$3,613.00
CA$3,230.00
CA$3,230.00 - CA$3,230.00
CA$3,230.00

Celestron Advanced VX 8" EdgeHD Telescope

CEL-12031
2 in stock

8" (203.2mm) EdgeHD Aplanatic Schmidt-Cassegrain Optics 2032mm Focal Length at a Native f/10 Focal Ratio Advanced VX Computerized German Equatoria...

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CA$3,613.00
CA$3,613.00 - CA$3,613.00
CA$3,613.00
CA$3,230.00
CA$3,230.00 - CA$3,230.00
CA$3,230.00
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CA$5,281.00
CA$5,281.00 - CA$5,281.00
CA$5,281.00
CA$4,690.00
CA$4,690.00 - CA$4,690.00
CA$4,690.00

Celestron Advanced VX 9.25" EdgeHD Telescope

CEL-12033
1 in stock

9.25" (235mm) EdgeHD Aplanatic Flat-Field Optics 2350mm Focal Length at f/10 42mm Image Circle Illuminates Full-Frame Sensors Advanced VX GoTo Equ...

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CA$5,281.00
CA$5,281.00 - CA$5,281.00
CA$5,281.00
CA$4,690.00
CA$4,690.00 - CA$4,690.00
CA$4,690.00
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CA$7,366.00
CA$7,366.00 - CA$7,366.00
CA$7,366.00
CA$6,580.00
CA$6,580.00 - CA$6,580.00
CA$6,580.00

Celestron CGEM II 1100 EdgeHD Telescope

CEL-12019
1 in stock

11" (279.4mm) aplanatic, flat-field EdgeHD optical system 2800mm focal length at a native f/10 ratio 42mm optimized image circle illuminates full-...

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CA$7,366.00
CA$7,366.00 - CA$7,366.00
CA$7,366.00
CA$6,580.00
CA$6,580.00 - CA$6,580.00
CA$6,580.00
Save 11% Save %
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CA$4,447.00
CA$4,447.00 - CA$4,447.00
CA$4,447.00
CA$3,970.00
CA$3,970.00 - CA$3,970.00
CA$3,970.00

Celestron CGEM II 800 EdgeHD Telescope

CEL-12017
1 in stock

8" (203.2mm) EdgeHD Aplanatic, Flat-Field Optics 2032mm Focal Length at f/10, with f/2 Fastar Capability 42mm Optimized Image Circle for Full-Fram...

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CA$4,447.00
CA$4,447.00 - CA$4,447.00
CA$4,447.00
CA$3,970.00
CA$3,970.00 - CA$3,970.00
CA$3,970.00
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CA$5,976.00
CA$5,976.00 - CA$5,976.00
CA$5,976.00
CA$5,340.00
CA$5,340.00 - CA$5,340.00
CA$5,340.00

Celestron CGEM II 925 EdgeHD Telescope

CEL-12018
1 in stock

235mm (9.25") EdgeHD Aplanatic Flat-Field Optics 2350mm Focal Length at f/10 40 lb (18 kg) Instrument Capacity CGEM II GoTo Mount StarBright XLT O...

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CA$5,976.00
CA$5,976.00 - CA$5,976.00
CA$5,976.00
CA$5,340.00
CA$5,340.00 - CA$5,340.00
CA$5,340.00
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CA$8,339.00
CA$8,339.00 - CA$8,339.00
CA$8,339.00
CA$7,450.00
CA$7,450.00 - CA$7,450.00
CA$7,450.00

Celestron CGX Equatorial 1100 HD Telescope

CEL-12057
1 in stock

279.4mm (11") EdgeHD Aplanatic, Flat-Field Optics 55 lb (25 kg) Instrument Load Capacity Computerized GoTo German Equatorial CGX Mount 0.42 Arc Se...

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CA$8,339.00
CA$8,339.00 - CA$8,339.00
CA$8,339.00
CA$7,450.00
CA$7,450.00 - CA$7,450.00
CA$7,450.00
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CA$5,420.00
CA$5,420.00 - CA$5,420.00
CA$5,420.00
CA$4,830.00
CA$4,830.00 - CA$4,830.00
CA$4,830.00

Celestron CGX Equatorial 800 HD Telescope

CEL-12055
1 in stock

8-inch (203.2mm) EdgeHD Aplanatic Schmidt-Cassegrain Optics 55 lb (25 kg) Instrument Capacity CGX Equatorial Mount StarBright XLT coatings for max...

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CA$5,420.00
CA$5,420.00 - CA$5,420.00
CA$5,420.00
CA$4,830.00
CA$4,830.00 - CA$4,830.00
CA$4,830.00
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CA$6,949.00
CA$6,949.00 - CA$6,949.00
CA$6,949.00
CA$6,210.00
CA$6,210.00 - CA$6,210.00
CA$6,210.00

Celestron CGX Equatorial 925 HD Telescope

CEL-12056
1 in stock

235mm (9.25") EdgeHD Aplanatic, Flat-Field Optical Tube 55 lb (25 kg) Instrument Capacity CGX Equatorial Mount f/10 Focal Ratio with 2350mm Focal ...

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CA$6,949.00
CA$6,949.00 - CA$6,949.00
CA$6,949.00
CA$6,210.00
CA$6,210.00 - CA$6,210.00
CA$6,210.00
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Save 11% Save %
CA$10,424.00
CA$10,424.00 - CA$10,424.00
CA$10,424.00
CA$9,310.00
CA$9,310.00 - CA$9,310.00
CA$9,310.00

Celestron CGX-L Equatorial 1100 HD Telescope

CEL-12076

11" (279.4mm) EdgeHD Aplanatic Schmidt-Cassegrain OTA 75 lb (34 kg) instrument capacity CGX-L Equatorial Mount 42mm image circle illuminates full-...

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CA$10,424.00
CA$10,424.00 - CA$10,424.00
CA$10,424.00
CA$9,310.00
CA$9,310.00 - CA$9,310.00
CA$9,310.00
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CA$13,899.00
CA$13,899.00 - CA$13,899.00
CA$13,899.00
CA$12,420.00
CA$12,420.00 - CA$12,420.00
CA$12,420.00

Celestron CGX-L Equatorial 1400 HD Telescope

CEL-12077

356mm (14") f/10 EdgeHD Aplanatic Schmidt-Cassegrain Optics CGX-L Computerized Equatorial Mount with 75 lb load capacity Flat-field optical design...

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CA$13,899.00
CA$13,899.00 - CA$13,899.00
CA$13,899.00
CA$12,420.00
CA$12,420.00 - CA$12,420.00
CA$12,420.00
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CA$9,034.00
CA$9,034.00 - CA$9,034.00
CA$9,034.00
CA$8,070.00
CA$8,070.00 - CA$8,070.00
CA$8,070.00

Celestron CGX-L Equatorial 925 HD Telescope

CEL-12075

9.25" (234.95mm) EdgeHD Aplanatic Schmidt-Cassegrain Optics 2350mm Focal Length at f/10 42mm Optimized Image Circle for Full-Frame Sensors CGX-L C...

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CA$9,034.00
CA$9,034.00 - CA$9,034.00
CA$9,034.00
CA$8,070.00
CA$8,070.00 - CA$8,070.00
CA$8,070.00
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Save 12% Save %
CA$6,254.00
CA$6,254.00 - CA$6,254.00
CA$6,254.00
CA$5,520.00
CA$5,520.00 - CA$5,520.00
CA$5,520.00

Celestron EdgeHD 11" OTA - CGE Dovetail

CEL-91050-XLT
1 in stock

279.4mm (11") EdgeHD Aplanatic Optics 2800mm Focal Length (f/10) 42mm Image Circle for Full-Frame Sensors StarBright XLT Optical Coatings 28 lb Op...

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CA$6,254.00
CA$6,254.00 - CA$6,254.00
CA$6,254.00
CA$5,520.00
CA$5,520.00 - CA$5,520.00
CA$5,520.00
Save 12% Save %
Save 11% Save %
CA$10,702.00
CA$10,702.00 - CA$10,702.00
CA$10,702.00
CA$9,520.00
CA$9,520.00 - CA$9,520.00
CA$9,520.00

Celestron EdgeHD 14" OTA - CGE Dovetail

CEL-91060-XLT

14" (356mm) EdgeHD Aplanatic Schmidt-Cassegrain Optics 3910mm Focal Length at f/11 42mm Optimized Image Circle for Full-Frame Sensors StarBright X...

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CA$10,702.00
CA$10,702.00 - CA$10,702.00
CA$10,702.00
CA$9,520.00
CA$9,520.00 - CA$9,520.00
CA$9,520.00
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CA$2,362.00
CA$2,362.00 - CA$2,362.00
CA$2,362.00
CA$2,070.00
CA$2,070.00 - CA$2,070.00
CA$2,070.00

Celestron EdgeHD 8" OTA - CGE Dovetail

CEL-91030-XLT
3 in stock

203.2mm (8") EdgeHD Aplanatic Optics 2032mm Focal Length at f/10 42mm Optimized Image Circle StarBright XLT Optical Coatings Fastar/HyperStar Comp...

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CA$2,362.00
CA$2,362.00 - CA$2,362.00
CA$2,362.00
CA$2,070.00
CA$2,070.00 - CA$2,070.00
CA$2,070.00
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CA$4,308.00
CA$4,308.00 - CA$4,308.00
CA$4,308.00
CA$3,860.00
CA$3,860.00 - CA$3,860.00
CA$3,860.00

Celestron EdgeHD 9.25" OTA - CGE Dovetail

CEL-91040-XLT
1 in stock

234.95mm (9.25") EdgeHD Aplanatic Optics 2350mm Focal Length at f/10 Astrograph-quality 42mm Corrected Image Circle StarBright XLT Optical Coating...

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CA$4,308.00
CA$4,308.00 - CA$4,308.00
CA$4,308.00
CA$3,860.00
CA$3,860.00 - CA$3,860.00
CA$3,860.00
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Save 38% Save %
CA$2,875.00
CA$2,875.00 - CA$2,875.00
CA$2,875.00
CA$1,788.00
CA$1,788.00 - CA$1,788.00
CA$1,788.00

Celestron Nexstar 6SE kit with lots of accessories - Used

U-CEL-11068
Only 1 left!

This used kit comes with: Nexstar 6SE telescope, mount and tripod Celestron Padded carrying case Celestron 2" Dieletric diagonal with twist lock C...

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CA$2,875.00
CA$2,875.00 - CA$2,875.00
CA$2,875.00
CA$1,788.00
CA$1,788.00 - CA$1,788.00
CA$1,788.00
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CA$243.00
CA$243.00 - CA$243.00
CA$243.00
CA$195.00
CA$195.00 - CA$195.00
CA$195.00

Celestron PowerTank Lithium - Used

U-CEL-18771
Only 1 left!

Like new!Features Portable power pack for your computerized Celestron telescope using Lithium-Iron Phosphate (LiFePO4) chemistry Powers your telesc...

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CA$243.00
CA$243.00 - CA$243.00
CA$243.00
CA$195.00
CA$195.00 - CA$195.00
CA$195.00
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CA$153.00
CA$153.00 - CA$153.00
CA$153.00
CA$119.00
CA$119.00 - CA$119.00
CA$119.00

Celestron X-Cel LX 9 mm - 1.25" - Used

U-CEL-93423
Only 1 left!

Like new!Features X-Cel LX eyepieces, optimized for planetary viewing, offer a 60° field of view through a six-element fully multi-coated lens syst...

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CA$153.00
CA$153.00 - CA$153.00
CA$153.00
CA$119.00
CA$119.00 - CA$119.00
CA$119.00
Save 22% Save %

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.
  • Canadian stock: Sale items ship from Canada without duties or brokerage fees for Canadian buyers.
  • 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.