Skip to content

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.

Filters

Orion Optics UK AG10 Angled Finder 50mm Wide Field
CA$218.00 - CA$218.00
CA$218.00
CA$238.00
CA$238.00 - CA$238.00
CA$238.00

Orion Optics UK AG10 Angled Finder 50mm Wide Field

OOUK-AG10-ANGLED-FINDER-50MM-WIDE

50mm Aperture 90-Degree Angled Design Fully Coated Optics Integrated Crosshairs for Centering Dovetail Quick-Release Mounting System Descriptio...

View full details
CA$218.00 - CA$218.00
CA$218.00
CA$238.00
CA$238.00 - CA$238.00
CA$238.00
Orion Optics UK AG10 Straight Finder 50mm Wide Field
CA$198.00 - CA$198.00
CA$198.00
CA$218.00
CA$218.00 - CA$218.00
CA$218.00

Orion Optics UK AG10 Straight Finder 50mm Wide Field

OOUK-AG10-STRAIGHT-FINDER-50MM-WIDE

50mm Aperture Straight-Through Optical Design Fully Coated Optics Visible Crosshair Reticle Quick-Release Dovetail Shoe Sprung-Loaded Adjustment S...

View full details
CA$198.00 - CA$198.00
CA$198.00
CA$218.00
CA$218.00 - CA$218.00
CA$218.00
Orion Optics UK AG14 Angled Finder 50mm Wide Field
CA$218.00 - CA$218.00
CA$218.00
CA$238.00
CA$238.00 - CA$238.00
CA$238.00

Orion Optics UK AG14 Angled Finder 50mm Wide Field

OOUK-AG14-ANGLED-FINDER-50MM-WIDE

50mm Aperture Angled Viewing Position Fully Coated Optics Integrated Crosshairs for Centering Designed for Quick-Release Dovetail Shoe Descript...

View full details
CA$218.00 - CA$218.00
CA$218.00
CA$238.00
CA$238.00 - CA$238.00
CA$238.00
Orion Optics UK AG14 Straight finder 50mm wide field
CA$198.00 - CA$198.00
CA$198.00
CA$218.00
CA$218.00 - CA$218.00
CA$218.00

Orion Optics UK AG14 Straight finder 50mm wide field

OOUK-AG14-STRAIGHT-FINDER-50MM-WIDE

50mm Aperture 8x Magnification Straight-Through Optical Path Fully Coated Optics Quick-Release Dovetail Mounting System Description FAQ Specifi...

View full details
CA$198.00 - CA$198.00
CA$198.00
CA$218.00
CA$218.00 - CA$218.00
CA$218.00
Orion Optics UK AG16 50mm Angled Finder Scope
CA$218.00 - CA$218.00
CA$218.00
CA$238.00
CA$238.00 - CA$238.00
CA$238.00

Orion Optics UK AG16 50mm Angled Finder Scope

OOUK-AG16-ANGLED-FINDER-50MM-WIDE

50mm Aperture 90-Degree Angled Viewing Fully Coated Optics Non-illuminated Crosshair Reticle Designed for Dovetail Mounting Shoes Description F...

View full details
CA$218.00 - CA$218.00
CA$218.00
CA$238.00
CA$238.00 - CA$238.00
CA$238.00
Orion Optics UK AG8 matching Carbon Fibre Dew Shield
CA$560.00 - CA$560.00
CA$560.00
CA$660.00
CA$660.00 - CA$660.00
CA$660.00

Orion Optics UK AG8 matching Carbon Fibre Dew Shield

OOUK-AG8-MATCHING-CARBON-FIBRE-DEW

Carbon fibre construction Slides directly onto the AG8 tube Reduces dew formation and stray light Description Specifications In the Box Warrant...

View full details
CA$560.00 - CA$560.00
CA$560.00
CA$660.00
CA$660.00 - CA$660.00
CA$660.00
Orion Optics UK AG8 Straight Finder 50mm Wide Field
CA$198.00 - CA$198.00
CA$198.00
CA$218.00
CA$218.00 - CA$218.00
CA$218.00

Orion Optics UK AG8 Straight Finder 50mm Wide Field

OOUK-AG8-STRAIGHT-FINDER-50MM-WIDE

50mm Aperture 8x Magnification Straight-Through Optical Design Fully Coated Optics Quick-Release Dovetail Mounting System Integrated Crosshairs fo...

View full details
CA$198.00 - CA$198.00
CA$198.00
CA$218.00
CA$218.00 - CA$218.00
CA$218.00
Orion Optics UK Angled Finder 50mm Wide Field
CA$218.00 - CA$218.00
CA$218.00
CA$238.00
CA$238.00 - CA$238.00
CA$238.00

Orion Optics UK Angled Finder 50mm Wide Field

OOUK-AG8-ANGLED-FINDER-50MM-WIDE

50mm Aperture 90-Degree Angled Viewing Fully Multi-Coated Optics Illuminated Crosshair Reticle Quick-Release Dovetail Shoe Description FAQ Spec...

View full details
CA$218.00 - CA$218.00
CA$218.00
CA$238.00
CA$238.00 - CA$238.00
CA$238.00
Orion Optics UK Base Plate - 250mm Length
CA$187.00 - CA$187.00
CA$187.00
CA$217.00
CA$217.00 - CA$217.00
CA$217.00

Orion Optics UK Base Plate - 250mm Length

OOUK-BASE-PLATE-250MM-4-WIDE

Length: 250mm Width: 4 inches Thickness: 10mm Provides a stable, non-flexing mounting surface Ideal for custom telescope and astrophotography setu...

View full details
CA$187.00 - CA$187.00
CA$187.00
CA$217.00
CA$217.00 - CA$217.00
CA$217.00
Orion Optics UK Base Plate - 400mm Length
CA$270.00 - CA$270.00
CA$270.00
CA$300.00
CA$300.00 - CA$300.00
CA$300.00

Orion Optics UK Base Plate - 400mm Length

OOUK-BASE-PLATE-400MM-4-WIDE

400mm Total Length Provides a Solid Connection Between OTA and Mount Engineered to Minimize Mechanical Flexure Designed for Orion Optics UK Telesc...

View full details
CA$270.00 - CA$270.00
CA$270.00
CA$300.00
CA$300.00 - CA$300.00
CA$300.00
Orion Optics UK Base Plate 300mm length
CA$218.00 - CA$218.00
CA$218.00
CA$248.00
CA$248.00 - CA$248.00
CA$248.00

Orion Optics UK Base Plate 300mm length

OOUK-BASE-PLATE-300MM-4-WIDE

Engineered by Orion Optics UK Provides a Rigid, Flex-Free Mounting Platform Connects Telescope Tube Rings to Mount Saddles Solid Metal Constructio...

View full details
CA$218.00 - CA$218.00
CA$218.00
CA$248.00
CA$248.00 - CA$248.00
CA$248.00
Orion Optics UK Base Plate 350mm length
CA$249.00 - CA$249.00
CA$249.00
CA$279.00
CA$279.00 - CA$279.00
CA$279.00

Orion Optics UK Base Plate 350mm length

OOUK-BASE-PLATE-350MM-4-WIDE

Provides a solid, flat mounting surface for telescope tube rings Engineered to eliminate flexure in the optical train Serves as the core structura...

View full details
CA$249.00 - CA$249.00
CA$249.00
CA$279.00
CA$279.00 - CA$279.00
CA$279.00
Orion Optics UK Base Plate 450mm length
CA$363.00 - CA$363.00
CA$363.00
CA$393.00
CA$393.00 - CA$393.00
CA$393.00

Orion Optics UK Base Plate 450mm length

OOUK-BASE-PLATE-450MM-4-WIDE

450mm Length 4-inch Width 10mm Thickness Provides a rigid mounting surface for telescope tube rings Description FAQ Specifications In the Box W...

View full details
CA$363.00 - CA$363.00
CA$363.00
CA$393.00
CA$393.00 - CA$393.00
CA$393.00
Orion Optics UK Carbon Dew Heater for AG14/ODK14
CA$871.00 - CA$871.00
CA$871.00
CA$971.00
CA$971.00 - CA$971.00
CA$971.00

Orion Optics UK Carbon Dew Heater for AG14/ODK14

OOUK-TUBE-DEW-HEATER-AG14-ODK14

Custom-fit for Orion Optics UK AG14 and ODK14 astrographs Rigid carbon fiber construction for durability and efficiency Ensures uniform heat distr...

View full details
CA$871.00 - CA$871.00
CA$871.00
CA$971.00
CA$971.00 - CA$971.00
CA$971.00
Orion Optics UK Celestron CGEM Dovetail 3" wide plate 250mm long
CA$353.00 - CA$353.00
CA$353.00
CA$383.00
CA$383.00 - CA$383.00
CA$383.00

Orion Optics UK Celestron CGEM Dovetail 3" wide plate 250mm long

OOUK-CELESTRON-CGEM-DOVETAIL-3-WIDE

250mm length Fits Celestron CGEM mounts CNC machined in the UK Description Specifications In the Box Warranty 250mm Celestron CGEM Doveta...

View full details
CA$353.00 - CA$353.00
CA$353.00
CA$383.00
CA$383.00 - CA$383.00
CA$383.00
Orion Optics UK Celestron CGEM Dovetail 3" wide plate 350mm long
CA$374.00 - CA$374.00
CA$374.00
CA$404.00
CA$404.00 - CA$404.00
CA$404.00

Orion Optics UK Celestron CGEM Dovetail 3" wide plate 350mm long

OOUK-CELESTRON-CGEM-DOVETAIL-3-WIDE-2

350mm length Fits Celestron CGEM mounts CNC machined in the UK Description Specifications In the Box Warranty 350mm Celestron CGEM Doveta...

View full details
CA$374.00 - CA$374.00
CA$374.00
CA$404.00
CA$404.00 - CA$404.00
CA$404.00
Orion Optics UK Dew Heater for Sec. 12″
CA$1,001.00 - CA$1,001.00
CA$1,001.00
CA$1,101.00
CA$1,101.00 - CA$1,101.00
CA$1,101.00

Orion Optics UK Dew Heater for Sec. 12″

OOUK-SECONDARY-DEW-HEATER-AG12-ODK12

Custom-fit for 12" Orion Optics UK telescopes Specifically designed for AG12 and ODK12 models Actively prevents dew formation on the secondary mir...

View full details
CA$1,001.00 - CA$1,001.00
CA$1,001.00
CA$1,101.00
CA$1,101.00 - CA$1,101.00
CA$1,101.00
Orion Optics UK Dew Heater for Sec. 20″
CA$2,152.00 - CA$2,152.00
CA$2,152.00
CA$2,252.00
CA$2,252.00 - CA$2,252.00
CA$2,252.00

Orion Optics UK Dew Heater for Sec. 20″

OOUK-SECONDARY-DEW-HEATER-ODK20TR-CARBON

Custom-designed for the Orion Optics UK 20-inch ODK secondary mirror Prevents dew formation to maintain maximum image contrast Lightweight carbon ...

View full details
CA$2,152.00 - CA$2,152.00
CA$2,152.00
CA$2,252.00
CA$2,252.00 - CA$2,252.00
CA$2,252.00
Orion Optics UK Dovetail Plate for Orion Tube Cradles
CA$129.00 - CA$129.00
CA$129.00
CA$159.00
CA$159.00 - CA$159.00
CA$159.00

Orion Optics UK Dovetail Plate for Orion Tube Cradles

OOUK-DOVETAIL-PLATE-ORION-CRADLES-EQ5

Connects Orion Optics UK Tube Cradles to a Mount Vixen-Style Dovetail Profile Compatible with VX and IDEAL Series Telescopes Fits EQ5, EQ6, GP, an...

View full details
CA$129.00 - CA$129.00
CA$129.00
CA$159.00
CA$159.00 - CA$159.00
CA$159.00
Orion Optics UK Dovetail Plate Skywatcher/Vixen 355mm
CA$165.00 - CA$165.00
CA$165.00
CA$265.00
CA$265.00 - CA$265.00
CA$265.00

Orion Optics UK Dovetail Plate Skywatcher/Vixen 355mm

OOUK-DOVETAIL-PLATE-43MM-X-355MM

Length: 355mm Width: 43mm Compatibility: Vixen / Sky-Watcher Style Saddles Provides Secure Mounting for Optical Tubes Description FAQ Specifica...

View full details
CA$165.00 - CA$165.00
CA$165.00
CA$265.00
CA$265.00 - CA$265.00
CA$265.00
Orion Optics UK Female Losmandy Baseplate 400mm long
CA$533.00 - CA$533.00
CA$533.00
CA$563.00
CA$563.00 - CA$563.00
CA$563.00

Orion Optics UK Female Losmandy Baseplate 400mm long

OOUK-FEMALE-LOSMANDY-BASEPLATE-400MM

400mm length Fits Losmandy-standard mounts CNC machined in the UK Description Specifications In the Box Warranty 400mm Female Losmandy Ba...

View full details
CA$533.00 - CA$533.00
CA$533.00
CA$563.00
CA$563.00 - CA$563.00
CA$563.00
Orion Optics UK Losmandy Attachment Plate - 250mm Long
CA$353.00 - CA$353.00
CA$353.00
CA$383.00
CA$383.00 - CA$383.00
CA$383.00

Orion Optics UK Losmandy Attachment Plate - 250mm Long

OOUK-AG8-LOSMANDY-ATTACHMENT-PLATE-250MM

250mm length for optimal balance and support Standard Losmandy D-style dovetail profile Machined from a single piece of solid, aero-grade aluminum...

View full details
CA$353.00 - CA$353.00
CA$353.00
CA$383.00
CA$383.00 - CA$383.00
CA$383.00
Orion Optics UK Losmandy Attachment Plate - 300mm Long (AG10)
CA$363.00 - CA$363.00
CA$363.00
CA$393.00
CA$393.00 - CA$393.00
CA$393.00

Orion Optics UK Losmandy Attachment Plate - 300mm Long (AG10)

OOUK-AG10-LOSMANDY-ATTACHMENT-PLATE-300MM

300mm Length Losmandy D-Style Dovetail Solid Aero-Grade Aluminum Construction Mounts Orion Optics CT & AG Telescopes Adapts CNC Rings to Vixen...

View full details
CA$363.00 - CA$363.00
CA$363.00
CA$393.00
CA$393.00 - CA$393.00
CA$393.00
Orion Optics UK Losmandy Attachment Plate - 350mm Long
CA$374.00 - CA$374.00
CA$374.00
CA$404.00
CA$404.00 - CA$404.00
CA$404.00

Orion Optics UK Losmandy Attachment Plate - 350mm Long

OOUK-AG10-LOSMANDY-ATTACHMENT-PLATE-350MM

Losmandy D-Style Dovetail Profile 350mm Overall Length Solid Aerospace-Grade Aluminum Construction Direct Fit for Losmandy & Paramount Mounts ...

View full details
CA$374.00 - CA$374.00
CA$374.00
CA$404.00
CA$404.00 - CA$404.00
CA$404.00

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.
  • 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.