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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

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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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Original price $849.99 - Original price $849.99
Original price
$849.99
$849.99 - $849.99
Current price $849.99

Explore Scientific FirstLight 127mm Mak-Cassegrain with Twilight I Mount - Discontinued

ES-FL-MC1271900MAZ01

127mm (5") Maksutov-Cassegrain Optics 1900mm Focal Length (f/15) Twilight I Manual Alt-Azimuth Mount Includes 25mm Plössl Eyepiece and 90° Diagona...

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Original price $849.99 - Original price $849.99
Original price
$849.99
$849.99 - $849.99
Current price $849.99
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Original price $529.99 - Original price $529.99
Original price
$529.99
$529.99 - $529.99
Current price $529.99

Explore Scientific FirstLight 127mm Mak-Cassegrain with EQ3 Mount - Discontinued

ES-FL-MC1271900EQ3

127mm Aperture Maksutov-Cassegrain Optical Design EQ3 German Equatorial Mount Complete Kit with Eyepiece and Finder Includes Smartphone Adapter ...

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Original price $529.99 - Original price $529.99
Original price
$529.99
$529.99 - $529.99
Current price $529.99
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Original price $59.99 - Original price $59.99
Original price
$59.99
$59.99 - $59.99
Current price $59.99

Explore Scientific Finder Scope Illuminator Only - Discontinued

ES-FNDRILLUM

Direct replacement for Explore Scientific 50mm finder scopes Variable brightness control for deep red LED illumination Preserves night vision whil...

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Original price $59.99 - Original price $59.99
Original price
$59.99
$59.99 - $59.99
Current price $59.99
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Original price $139.99 - Original price $139.99
Original price
$139.99
$139.99 - $139.99
Current price $139.99

Explore Scientific Nebula Filter UHC - 2.0" - Discontinued

ES-310210

Ultra-High Contrast (UHC) Narrow-Band Filter Designed for Two-Inch Eyepieces and Filter Wheels Significantly Reduces Artificial Light and Airglow ...

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Original price $139.99 - Original price $139.99
Original price
$139.99
$139.99 - $139.99
Current price $139.99
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Original price $139.99 - Original price $139.99
Original price
$139.99
$139.99 - $139.99
Current price $139.99

Explore Scientific Nebula Filter Oxygen III - 2.0" - Discontinued

ES-310200

Oxygen III (OIII) Nebula Filter 2.0" Barrel Size Isolates Two Doubly-Ionized Oxygen Emission Lines Maximizes Contrast on Emission Nebulae Blocks B...

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Original price $139.99 - Original price $139.99
Original price
$139.99
$139.99 - $139.99
Current price $139.99
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Original price $119.99 - Original price $119.99
Original price
$119.99
$119.99 - $119.99
Current price $119.99

Explore Scientific Nebula Filter CLS - 2.0" - Discontinued

ES-310220

2.0" City Light Suppression (CLS) Filter Enhances Contrast for Deep-Sky Objects Darkens Sky Background in Light-Polluted Areas Threads into Standa...

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Original price $119.99 - Original price $119.99
Original price
$119.99
$119.99 - $119.99
Current price $119.99
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Original price $109.99 - Original price $109.99
Original price
$109.99
$109.99 - $109.99
Current price $109.99

Explore Scientific Nebula Filter UHC - 1.25" - Discontinued

ES-310215

UHC (Ultra-High Contrast) Narrow-Band Design Standard 1.25" Filter Threading Maximizes Contrast on Emission and Planetary Nebulae Aggressively Blo...

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Original price $109.99 - Original price $109.99
Original price
$109.99
$109.99 - $109.99
Current price $109.99
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Original price $299.99 - Original price $299.99
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$299.99
$299.99 - $299.99
Current price $299.99

Explore Scientific Twilight Heavy Duty Tripod (White) - Discontinued

ES-TL-ST3W-00

Adjustable Height from 26.5" to 42.5" 13.6 lb (6.2 kg) Total Weight Designed for Twilight I & iEXOS-100 Mounts Stainless Steel Legs with Die-C...

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Original price $299.99 - Original price $299.99
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$299.99
$299.99 - $299.99
Current price $299.99
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Original price $2,230.00 - Original price $2,230.00
Original price
$2,230.00
$2,230.00 - $2,230.00
Current price $2,230.00

Sky-Watcher Esprit 80mm ED Triplet APO Refractor - Discontinued

SW-S11400

Like new, but has been displayed at our store! Never used outside. Brand new!Designed with the discerning astrophotographer in mind, Sky-Watcher US...

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Original price $2,230.00 - Original price $2,230.00
Original price
$2,230.00
$2,230.00 - $2,230.00
Current price $2,230.00
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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.