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Discontinued Products

Products no longer in production. This collection exists as a reference — for identifying what you own, checking what a discontinued model was compatible with, and finding out whether parts and service are still available. Being discontinued does not mean unsupported, and a great deal of excellent astronomy equipment is no longer made.

If you own something listed here and need a part, an adapter or a repair, contact us. We can frequently source service parts through dealer channels that are not publicly listed.

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Explore Scientific Neutral Density Filter ND 0.9 - 2" - Discontinued

ES-310240

ND 0.9 Optical Density 12.5% Light Transmission 2-inch Barrel Size Neutral Color Transmission Reduces Glare on Lunar Surfaces Description FAQ S...

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CA$182.00 - CA$182.00
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Explore Scientific Nebula Filter H-Beta - 1.25" - Discontinued

ES-310235

1.25" Diameter Filter Cell Isolates Hydrogen-Beta (H-Beta) Emission Line Dramatically Increases Contrast on Specific Nebulae Blocks Light Pollutio...

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CA$154.00 - CA$154.00
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Explore Scientific Nebula Filter Oxygen III - 1.25" - Discontinued

ES-310205

1.25" Barrel Size Oxygen III (OIII) Line Filter High-Contrast Visual Observing Ideal for Planetary Nebulae & Supernova Remnants Fits Standard ...

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Explore Scientific 70° 25mm Eyepiece - 2" - Discontinued

ES-EP7025-00

The new eyepiece design represent a major advance compared to the original Plössl and Super-Plössl design. The five element design features tack sh...

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Explore Scientific Twilight Medium Duty Tripod (White) - Discontinued

ES-TL-ST2W-00

Direct Stability Upgrade for the iEXOS-100 Mount Fully Adjustable Stainless Steel Legs Die-Cast Aluminum Spreader Tray with Threaded T-Bar Enginee...

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Explore Scientific FirstLight Twilight Nano Mount - Discontinued

ES-FL-TWINANOT1-00
Only 2 left!

Light-Duty Alt-Azimuth Mount Head Vixen-Style Dovetail Saddle Adjustable-Height Metal Tripod Single-Arm Control Handle for Smooth Motion Designed ...

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Celestron Hummingbird 9-27x56mm Micro Spotting Scope - Discontinued

CEL-52310

Magnification: 9-27x Zoom Objective Lens: 56mm Diameter Weight: 20.8 oz (590 g) Close Focus: 9.8 ft (3 m) Protection: Waterproof & Nitrog...

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Lunt 100mm Ha Etalon Filter - Discontinued

LSS-LS100FHA

100mm Hydrogen-alpha Etalon Filter Enables Double-Stacking on Compatible Telescopes Dramatically Increases Solar Surface Contrast Designed for Lun...

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William Optics Birding 250mm Duelside Plate (Manfrotto & Arca Swiss Type) - DISCONTINUED

WO-M-PMA250

Length: 250 mm Width: 50 mm Dual Dovetail: Manfrotto & Arca-Swiss Compatible Weight: 0.32 kg / 0.71 lbs Ideal for Balancing Long Lenses & ...

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William Optics Canon EOS Camera Adapter - Discontinued

WO-AD4-A009-L00BL03

Allows attachment of Canon EOS cameras to William Optics telescopes Ensures a secure and stable connection for astrophotography Description ...

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William Optics Bahtinov Mask Cover for WO Z61

WO-CPBM-61GD

Patented Bahtinov Mask and Dust Cover Combination Designed Exclusively for the William Optics ZenithStar 61 Durable Metal Construction Signature W...

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Explore Scientific 12V Car Adapter for EXOS2GT - Discontinued

ES-EXOS2GTDC

Powers Explore Scientific EXOS2GT Mounts Connects to Standard 12V DC Power Supplies Center-Positive Polarity Extended Cord Length for Field Flexib...

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Explore Scientific Cradle for Carbon Fiber ED152mm - Discontinued

ES-TED152CFCRDL

Explore Scientific cradle assemblies fit their appointed telescope OTA snuggly, yet protect the delicate surface of the tube. The hinged ring syste...

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Explore Scientific Cradle for Comet Hunter 152mm - Discontinued

ES-TEDMN152CRDL

Explore Scientific cradle assemblies fit their appointed telescope OTA snuggly, yet protect the delicate surface of the tube. The hinged ring syste...

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Explore Scientific Cradle for DAR 152mm - Discontinued

ES-DAR152CRDL

Designed for the Explore Scientific Doublet AR Series 152mm Telescope Hinged ring design for easy and secure OTA installation Oversized metal thum...

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Explore Scientific Cradle for Carbon Fiber 102mm - Discontinued

ES-TED102CFCRDL

Inside Diameter: 4.65" - 4.82" (118.11mm - 122.43mm) Dovetail Plate Length: 8" (203mm) Construction: Extruded Aluminum with Hinged Rings Acces...

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Explore Scientific Large Vixen-Style Saddle Plate - Discontinued

ES-VXNLG

Large Vixen-Style Mounting Plate Solid, Single-Piece Extruded Aluminum Construction Black Anodized Finish for Durability Provides a Rigid and Secu...

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CA$112.00 - CA$112.00
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Explore Scientific Saddle Plate for ED80mm / TED80mm - Discontinued

ES-TED80CRDL

Compatibility: Explore Scientific ED80mm & TED80mm Mount Style: Vixen-style Material: Extruded Aluminum Finish: Black Anodized Includes Stand-...

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Explore Scientific Short Vixen-Style Saddle Plate - Discontinued

ES-VXNSML

5.125-inch length for compact optical tubes Industry-standard Vixen-style dovetail profile Machined from a single piece of extruded aluminum Durab...

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Explore Scientific 2" AR Series Focuser - Discontinued

ES-FOCDAR-00

2" Focuser Drawtube Dual-Speed Coarse and Micro-Focusing Knobs Supports 1.25" Accessories with Optional Adapter Adjustable Drawtube Tension Contro...

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Explore Scientific 2" Comet Hunter Focuser - Includes Extension Tubes - Discontinued

ES-FOCCMTHTR-00

Explore Scientific™ David H. Levy Comet Hunter Telescope is rich in quality components. Among those is the 2? Comet Hunter Focuser, which also can ...

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Explore Scientific EXOS2-GT Cable Set - Discontinued

ES-EXOS2GT-CABLESET

This adapter cable set updates the EXOSII GOTO EQ handset to v2.3 and can be used with the Bresser EXOSII Mount Driver that is compatible with Wind...

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Explore Scientific Touch Screen Buttons for PMC-Eight - Discontinued

ES-TSB4-00

Explore Scientific Touch Screen Buttons for PMC-Eight

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Explore Scientific Dobsonian Shroud for 16" Truss Tube DOB - Discontinued

ES-DOB16SHR

Keep out stray and unwanted light from your 16" Truss Tube Dobsonian telescope with a lightweight light shroud. Keeping the path dark between your ...

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Owning Discontinued Equipment

Astronomy equipment has a long service life, and a discontinued model is often mechanically identical to something still in production.

  • Parts availability: Manufacturers often maintain service stock well beyond a product's sales life and supply it to authorized dealers on request.
  • Common failure parts: Thumbscrews, springs, gears and cables are the items that typically fail, and many are shared across product generations.
  • Adapters and compatibility: Older equipment frequently uses the same thread standards as current products, so modern accessories often fit.
  • Repair rather than replacement: Mechanical assemblies can often be repaired or refurbished in-house even when a factory part no longer exists.
  • Used market: Discontinued models remain available second hand, and many are excellent value for their capability.
  • Successor identification: If a repair is not economic, we can identify the current model that replaced yours and what changed.

Why Choose David Astro for Discontinued Equipment Support

Being an authorized dealer matters most for products that are no longer sold.

  • Dealer channel parts access: We can request service parts that never appear in public catalogues, which is often the only route to a specific component.
  • Identification from photographs: Send us a picture and we will identify the model and the part, since documentation for older equipment is frequently unavailable.
  • In-house repair: Where no part exists, we can often repair or fabricate a working solution rather than declare the equipment finished.
  • Compatibility advice: We will tell you which current accessories fit older equipment, which is more often than people expect.
  • Ships from Canada: Parts and accessories delivered domestically without duties or brokerage fees.

Discontinued Products in Canada — Frequently Asked Questions

Can I still get parts for a discontinued product?
Often yes. Manufacturers keep service stock beyond a product's sales life and supply it to dealers. Tell us the model and what you need and we will check availability.
Is old astronomy equipment still worth using?
Frequently. Optics that are cared for hold their performance for decades, and mechanically sound mounts often outperform newer budget ones. Electronics are what usually date first.
Will modern accessories fit older equipment?
More often than expected, since thread standards like M42, M48 and SCT have been stable for a long time. Tell us the equipment and we will confirm.
What if no part is available?
We can often repair the assembly or fabricate a functional replacement in-house. Where that is not economic, we will identify the current equivalent and what has changed.

Own something no longer made?

Send us a photo and the model and we will find parts or repair it. Canadian stock and in-house service.