Inventory closeout sale, everything must go. Up to 35% off. Some conditions apply.

We are closing our inventory side of the business and focusing solely on software - going back to our roots so to speak. No store coupons required, all prices have been marked down. First come, first served, until quantities last. We are no longer placing orders with manufacturers. Absolutely no rain checks. We reserve the right to cancel and refund orders at our sole discretion. We do our best to maintain our inventory accurate, but mistakes do happen, if you purchase an item that is no longer in stock, you will be refunded. The sale does not apply to some higher-end items such as 10Micron. Prices subject to change without notice. ALL SALES ARE FINAL.

Occasionally, we find a box under a box under a box in the back of the warehouse with hidden treasures, and when we do, we add these items on the site, so even though you may not find what you're looking for today, it could automagically appear next week.

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Eyepieces & Diagonals

11 products

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Explore Scientific 100° 14mm - 2'' [ES-EPWP10014-01]

$619.06 CAD ~~$814.55 CAD~~

1 in stock On sale
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Explore Scientific: Explore Scientific eyepiece, 14 mm focal length, 100 ° visible field, 50.8 mm (2 ").

In recent years, Explore Scientific eyepieces have built a solid reputation in terms of quality, The eyepiece of Explore is a pleasant and easy experience, the image is beautiful from the first glance.

This eyepiece offers an apparent wide field of 100 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

Each eyepiece of the 100 ° series is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings. To ensure watertightness, each eyepiece of the 100 ° series is factory tested by immersing it under water for 30 minutes to a depth of one meter.

All 100 ° eyepieces are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 100 ° delivers sharp, contrasting images. The apparent field of 100 ° is so wide, that you can keep in sight a celestial object observed in a non-motorized instrument.

The focal length of the Explore Scientific 100 ° eyepiece of 14 mm predestines it at medium magnifications (71x on an optical tube of 1 meter of focal length). It is therefore versatile and suitable for planetary observations (Moon, planets, Sun), double or multiple stars, as well as observation of planetary nebulae and the search for details in nebulae and galaxies.

The eye relief of 14 mm is 14.5 mm: this means that the image remains comfortable up to 14.5 mm above the lens, to fully enjoy the field offered by the lens, ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

The inside of the sink is threaded in M48 x 0.75 mm to accommodate filters with a diameter of 50.8 mm (2 "), Such as interference filters of type OIII, UHC, H-Beta..., Which serve to enhance contrast on many nebulae.

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Explore Scientific 100° 20mm [ES-EPWP10020-00]

$619.06 CAD ~~$814.55 CAD~~

2 in stock On sale
Back Order / Waiting List

Explore Scientific:Explore Scientific eyepiece, 20 mm focal length, 100 ° field of view, 50.8 mm (2 ").

A few years ago, Explore Scientific eyepieces have developed a solid reputation in terms of quality, The eyepiece of Explore is a pleasant and easy experience, the image is beautiful from the first glance.

This eyepiece offers an apparent wide field of 100 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

Each eyepiece of the 100 ° series is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings. To ensure watertightness, each eyepiece of the 100 ° series is factory tested by immersing it under water for 30 minutes to a depth of one meter.

All 100 ° eyepieces are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 100 ° delivers sharp, contrasting images. The apparent field of 100 ° is so wide, that you can keep in sight a celestial object observed in a non-motorized instrument.

The focal length of the 20 "Scientific Explore Scientific eyepiece predestines it at low magnifications (47x on an optical tube of 1 meter of focal length), making it very suitable for the observation in detail of large nebulae or galaxies, clusters Galaxies or comets, while benefiting from a very wide field of vision.

The eye relief of 20 mm is 14.5 mm: this means that the image remains comfortable up to a distance of 14.5 mm above the lens, to take full advantage of the field offered by the lens, ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

The inside of the sink is threaded in M48 x 0.75 mm to accommodate 50.8 mm (2 ") diameter filters, Such as interference filters of type OIII, UHC, H-Beta..., Which serve to enhance the contrast on many nebulae

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Explore Scientific 100° 25mm - 2" [ES-EPWP10025-01]

$954.66 CAD ~~$1,256.13 CAD~~

2 in stock On sale
Back Order / Waiting List

Explore Scientific: Explore Scientific Eyepiece, 25 mm focal length, 100 ° visible field, 2"( 50.8 mm).

Over the past few years, the Explore Scientific eyepieces have forged a solid reputation in terms of quality and competitive rates. Looking in an eyepiece Explore is a pleasant and easy experience, the picture is beautiful from the first glance.

This eyepiece offers an apparent wide field of 100 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

Each eyepiece of the 100 ° series is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings. To ensure watertightness, each eyepiece of the 100 ° series is factory tested by immersing it under water for 30 minutes to a depth of one meter.

All 100 ° eyepieces are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 100 ° delivers sharp, contrasting images. The apparent field of 100 ° is so wide, that you can keep in sight a celestial object observed in a non-motorized instrument.

The focal length of the Explore Scientific 100 ° eyepiece of 25 mm predestines it at low magnifications (40x on an optical tube of 1 meter of focal length), making it very suitable for the observation in detail of large nebulae or galaxies, clusters Galaxies or comets, while benefiting from a very wide field of vision.

The 25 mm eye relief is 14.5 mm: this means that the image remains comfortable up to 14.5 mm above the lens, in order to take full advantage of the field offered by the lens. ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

The inside of the sink is threaded in M48 x 0.75 mm to accommodate filters with a diameter of 50.8 mm (2 "), Such as interference filters of type OIII, UHC, H-Beta..., Which serve to enhance contrast on many nebulae.

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Explore Scientific 100° 9mm - 2'' [ES-EPWP1009-01]

$619.06 CAD ~~$814.55 CAD~~

1 in stock On sale
Back Order / Waiting List

Explore Scientific: Scientific eyepiece, 9 mm focal length, 100 ° visible field, 50.8 mm (2 ").
Over the past few years, the Explore Scientific eyepieces have forged a solid reputation in terms of quality and competitive rates. Looking in an eyepiece Explore is a pleasant and easy experience, the picture is beautiful from the first glance.

This eyepiece offers an apparent wide field of 100 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

Each eyepiece of the 100 ° series is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings. To ensure watertightness, each eyepiece of the 100 ° series is factory tested by immersing it under water for 30 minutes to a depth of one meter.

All 100 ° eyepieces are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 100 ° delivers sharp, contrasting images. The apparent field of 100 ° is so wide, that you can keep in sight a celestial object observed in a non-motorized instrument.

The focal length of the Scientific 100 ° Scientific eyepiece of 9 mm predestines it at fairly high magnifications (125x on an optical tube of 1 meter of focal length). It remains versatile, adaptable to planetary observations (Moon, planets, Sun), double or multiple stars, as well as observation of planetary nebulae and the search for details in nebulae and galaxies.

The 9 mm eye relief is 12.5 mm: this means that the image remains comfortable up to a distance of 12.5 mm above the lens, to take full advantage of the field offered by the camera. ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

The inside of the sink is threaded in M48 x 0.75 mm to accommodate filters with a diameter of 50.8 mm (2 "), Such as interference filters of type OIII, UHC, H-Beta..., Which serve to enhance contrast on many nebulae.

Add to cart
Explore Scientific 68° Series 16mm - 1.25" [ES-EPWP6816-01]

$205.15 CAD ~~$269.93 CAD~~

4 in stock On sale
Back Order / Waiting List

Explore Scientific: Scientific eyepiece, 16 mm focal length, visible field of 68 °,Barrel size 31.75 mm (1.25").

Over the past few years, the Explore Scientific eyepieces have forged a solid reputation in terms of quality and competitive rates. Looking in an eyepiece Explore is a pleasant and easy experience, the picture is beautiful from the first glance.

This eyepiece offers an apparent wide field of 68 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

The Explore Scientific 68 ° eyepiece range is well suited for the amateur astronomer looking for optical quality while remaining within a moderate budget. It is an excellent compromise for owners of telescopes with diameters between 150 mm and 300 mm. Observing the Orion nebula in these eyepieces through a Dobson telescope of 200 mm reserves very pleasant surprises.

Each eyepiece of the series 68 ° is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings.

All eyepieces in the 68 ° series are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 68 ° delivers sharp, contrasting images. The apparent field of 68 ° is relatively wide, allowing you to keep a celestial object observed in a non-motorized instrument long enough in sight.

The focal length of the Explore Scientific 68 ° eyepiece of 16 mm predestines it to medium to medium magnification (62x on an optical tube of 1 meter of focal length), making it very versatile both for planetary observations (Moon, planets, Sun) , As well as looking for details in nebulae and galaxies, while keeping a large field of view.

The eye relief of 16 mm is 11.9 mm: this means that the image remains comfortable up to 11.9 mm above the lens, to fully enjoy the field offered by the lens, ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

Finally, it fits into the 1.25 "(31.75 mm) eyepiece holders. The inside of the sink is threaded in M28.5 x 0.6 mm to accommodate filters with 31.75 mm (1.25"), Such as interference filters of type OIII, UHC, H-Beta, etc., which serve to enhance the contrast on many nebulae.

Add to cart
Explore Scientific 68° Series 20mm - 1.25'' [ES-EPWP6820-01]

$249.90 CAD ~~$328.81 CAD~~

3 in stock On sale
Back Order / Waiting List

Explore Scientific: Explore Scientific Eyepiece, 20 mm focal length, 68 ° visible field, 31.75 mm (1.25").

Over the past few years, the Explore Scientific eyepieces have forged a solid reputation in terms of quality and competitive rates. Looking in an eyepiece Explore is a pleasant and easy experience, the picture is beautiful from the first glance.

This eyepiece offers an apparent wide field of 68 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

The Explore Scientific 68 ° eyepiece range is well suited for the amateur astronomer looking for optical quality while remaining within a moderate budget. It is an excellent compromise for owners of telescopes with diameters between 150 mm and 300 mm. Observing the Orion nebula in these eyepieces through a Dobson telescope of 200 mm reserves very pleasant surprises.

Each eyepiece of the series 68 ° is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings.

All eyepieces in the 68 ° series are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 68 ° delivers sharp, contrasting images. The apparent field of 68 ° is relatively wide, allowing you to keep a celestial object observed in a non-motorized instrument long enough in sight.

The focal length of the Explore Scientific 68 ° eyepiece of 20 mm predestines it at fairly low to medium magnifications (50x on an optical tube of 1 meter of focal length), making it very versatile for planetary observations (Moon, planets, Sun) , As well as looking for details in nebulae and galaxies, while keeping a large field of view.

The eye relief of 20 mm is 15.3 mm: this means that the image remains comfortable up to 15.3 mm above the lens, to fully enjoy the field offered by the lens, ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

Finally, it fits into the 1.25 "(31.75 mm) eyepiece holders. The inside of the sink is threaded in M28.5 x 0.6 mm to accommodate filters with 31.75 mm (1.25" ), Such as interference filters of type OIII, UHC, H-Beta, etc., which serve to enhance the contrast on many nebulae.

Add to cart
Explore Scientific 68° Series 28mm - 2'' [ES-EPWP6828-01]

$272.27 CAD ~~$358.25 CAD~~

1 in stock On sale
Back Order / Waiting List

Explore Scientific: Explore Scientific Eyepiece, 28 mm focal length, 68 ° visible field, 2" (50.8 mm).

Over the past few years, the Explore Scientific eyepieces have forged a solid reputation in terms of quality and competitive rates. Looking in an eyepiece Explore is a pleasant and easy experience, the picture is beautiful from the first glance.

This eyepiece offers an apparent wide field of 68 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

The Explore Scientific 68 ° eyepiece range is well suited for the amateur astronomer looking for optical quality while remaining within a moderate budget. It is an excellent compromise for owners of telescopes with diameters between 150 mm and 300 mm. Observing the Orion nebula in these eyepieces through a Dobson telescope of 200 mm reserves very pleasant surprises.

Each eyepiece of the series 68 ° is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings.

All eyepieces in the 68 ° series are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 68 ° delivers sharp, contrasting images. The apparent field of 68 ° is relatively wide, allowing you to keep a celestial object observed in a non-motorized instrument long enough in sight.

The focal length of the Explore Scientific 68 ° eyepiece of 28 mm predestines it at low magnifications (36x on an optical tube of 1 meter of focal length), making it very suitable for detailed observation of large nebulae or galaxies, clusters of Galaxies or comets, while benefiting from a very wide field of vision.

The 28 mm eye relief is 21.6 mm: this means that the image remains comfortable up to a distance of 21.6 mm above the lens, in order to take full advantage of the field offered by the camera. ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

The inside of the sink is threaded in M48 x 0.75 mm to accommodate filters with a diameter of 50.8 mm (2 "), Such as interference filters of type OIII, UHC, H-Beta..., Which serve to enhance contrast on many nebulae.

Add to cart
Explore Scientific 68° Series 34mm - 2'' [ES-EPWP6834-01]

$361.76 CAD ~~$476.00 CAD~~

1 in stock On sale
Back Order / Waiting List

Explore Scientific: Scientific Eyepiece, 34 mm focal length, 68 ° visible field, 2" (50.8 mm).

Over the past few years, the Explore Scientific eyepieces have forged a solid reputation in terms of quality and competitive rates. Looking in an eyepiece Explore is a pleasant and easy experience, the picture is beautiful from the first glance.

This eyepiece offers an apparent wide field of 68 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

The Explore Scientific 68 ° eyepiece range is well suited for the amateur astronomer looking for optical quality while remaining within a moderate budget. It is an excellent compromise for owners of telescopes with diameters between 150 mm and 300 mm. Observing the Orion nebula or the Pleiades in these eyepieces through a 200 mm Dobson telescope reserves very pleasant surprises.

Each eyepiece of the series 68 ° is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings.

All eyepieces in the 68 ° series are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 68 ° delivers sharp, contrasting images. Their apparent field of 68 ° is relatively wide, allowing you to keep a celestial object observed in a non-motorized instrument for a long time.

The focal length of the Explore Scientific 68 ° eyepiece of 34 mm predestines it at low magnifications (29x on an optical tube of 1 meter of focal length), making it very suitable for observation of large nebulae or galaxies, clusters of galaxies Or comets, while benefiting from a very wide field of vision.

The 34 mm eye relief is 26.4 mm: this means that the image remains comfortable up to a distance of 26.4 mm above the lens, in order to take full advantage of the field offered by the lens. ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

The inside of the sink is threaded in M48 x 0.75 mm to accommodate filters with a diameter of 50.8 mm (2 "), Such as interference filters of type OIII, UHC, H-Beta..., Which serve to enhance contrast on many nebulae.

Add to cart
Explore Scientific 82° Series 11mm - 1.25'' [ES-EPWP8211-01]

$227.52 CAD ~~$299.37 CAD~~

1 in stock On sale
Back Order / Waiting List

Explore Scientific: Explore Scientific eyepiece, 11 mm focal length, 82 ° visible field, 31.75 mm (1.25 ").

In recent years, Explore Scientific eyepieces have gained a solid reputation in terms of quality, The eyepiece of Explore is a pleasant and easy experience, the image is beautiful from the first glance.

This eyepiece offers an apparent wide field of 82 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

Each eyepiece of the series 82 ° is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings.

All 82 ° series eyepieces are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 82 ° delivers sharp, contrasting images. The apparent field of 82 ° is wide enough to be able to keep in sight a celestial object observed in a non-motorized instrument.

The focal length of the Explore Scientific 82 ° eyepiece of 11 mm predestines it at medium magnifications (91x on an optical tube of 1 meter of focal length). It is therefore very versatile, suitable for planetary observations (Moon, planets, Sun), double or multiple stars, as well as observation of planetary nebulae and the search for details in nebulae and galaxies.

The 11 mm eye relief is 15.6 mm: this means that the image remains comfortable up to 15.6 mm above the lens, to fully enjoy the field offered by the lens, ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

Finally, it fits into the 1.25 "(31.75 mm) eyepiece holders. The inside of the sink is threaded in M28.5 x 0.6 mm to accommodate filters with 31.75 mm (1.25" ), Such as interference filters of type OIII, UHC, H-Beta, etc., which serve to enhance the contrast on many nebulae.

Add to cart
Explore Scientific 82° Series 4.7mm - 1.25'' [ES-EPWP8247-01]

$227.52 CAD ~~$299.37 CAD~~

On sale

Explore Scientific: Scientific eyepiece, focal length 4.7 mm, apparent field 82 °, barrel size 31.75 mm (1.25 ").

Over the past few years, the Explore Scientific eyepieces have forged a solid reputation in terms of quality and competitive rates. Looking in an eyepiece Explore is a pleasant and easy experience, the picture is beautiful from the first glance.

This eyepiece offers an apparent wide field of 82 °, high level optical quality, surprising light transmission and correctly corrected field planarity ...

Each eyepiece of the series 82 ° is sealed and filled with an inert gas, argon. This process prevents the formation of condensation inside the eyepiece and prevents the entry of dust to maximize the lifetime of the internal coatings.

All 82 ° series eyepieces are fully multilayered and the edges are blackened to produce maximum contrast.

The Explore Scientific 82 ° delivers sharp, contrasting images. The apparent field of 82 ° is wide enough to be able to keep in sight a celestial object observed in a non-motorized instrument.

The focal length of the Explore Scientific 82 ° 4.7 mm eyepiece is only suitable for observing small and bright objects (planets, planetary nebulae, globular clusters) since it delivers very high magnifications (212x on an optical tube of 1 Meter of focal length).

The eye relief of the 4.7 mm is 13.6 mm: this means that the image remains comfortable up to a distance of 13.6 mm above the lens, to fully enjoy the field offered by the lens, ocular. This is an important detail for the viewer wearing eyeglasses, which will keep them on the nose.

Finally, it fits into the 1.25 "(31.75 mm) eyepiece holders. The inside of the sink is threaded in M28.5 x 0.6 mm to accommodate filters with 31.75 mm (1.25" ), Such as interference filters of type OIII, UHC, H-Beta, etc., which serve to enhance the contrast on many nebulae.

Out of Stock
Explore Scientific Smart Phone Camera Adapter for 1.25'' Eyepiece [ES-SPCA125-00]

$21.69 CAD ~~$28.54 CAD~~

1 in stock On sale
Back Order / Waiting List

Explore Scientific: How many times have you wished you could center your smart phone's lens right over the center of the eyepiece lens to grab an image of the Moon or a bright planet? It's not easy to hand hold it as you will find out if you try.

This handy adapter works with any smartphone, holding it securely with a set screw to a standard size barrel 1.25-inch eyepiece. And with 35 soft silicon rubber suction cups, it will hold your smart phone firmly in the precise position, allow you to center the camera's lens.

Eyepiece not included.

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