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Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece
Explore Scientific 52 Degree Waterproof Eyepiece

Explore Scientific 52 Degree Waterproof Eyepiece

Vendor
Explore Scientific
Sale price
$79.99
Regular price
$89.99 You save 11%
Unit price
per 
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Availability:

Estimated Arrival: Between Apr 20 and Apr 26. *ETA to USA Only

Shipping & Returns: Satisfaction guaranteed 30 day return policy.

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High power eyepieces (e.g. 3mm to 10mm) are used not only for obvious observations of planets and double stars, but can be employed for bright, compact deep sky objects. Not only will the scale of an object like a planetary nebula or globular cluster be impressive as it fills the eyepiece FOV, but the background sky will be very dark as the contrast effect increases with added magnification, provided that the atmospheric seeing conditions are favorable enough to reveal a sharp image.

Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore Scientific 52° Series eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality and value versus a comparably priced Plossl.

Another great benefit of these eyepieces is the excellent contrast and ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.

Specs

3mm

Item Number EPWP5203–01
Focal Length 3mm
Length 90.9mm
Width 43mm
Weight 204.1 grams; 7.2 oz.
Barrel Size/Type 1.25" O.D. / Double Taper
Eye Relief 15mm
Field Stop Diameter 2.7mm
Coatings: EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 6 Elements in 3 Groups; Edge Blackened
Filter Thread Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand

4.5mm
Item Number EPWP5245–01
Focal Length 4.5mm
Length 83.5mm
Width 43mm
Weight 181.4 grams; 6.4 oz.
Barrel Size/Type 1.25" O.D. / Double Taper
Eye Relief 15mm
Field Stop Diameter 4.1mm
Coatings EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 6 Elements in 3 Groups; Edge Blackened
Filter Thread Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand


6.5mm

Item Number EPWP5265–01
Focal Length 6.5mm
Length 103.5mm
Width 43mm
Weight 226.8 grams; 8 oz.
Barrel Size/Type 1.25" O.D. / Double Taper
Eye Relief 15.9mm
Field Stop Diameter 5.9mm
Coatings EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 6 Elements in 3 Groups; Edge Blackened
Filter Thread Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand


10mm

Item Number EPWP5210–01
Focal Length 10mm
Length 83mm
Width 43mm
Weight 181.4 grams; 6.4 oz.
Barrel Size/Type 1.25" O.D. / Double Taper
Eye Relief 16.6mm
Field Stop Diameter: 9.1mm
Coatings EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 6 Elements in 3 Groups; Edge Blackened
Filter Thread Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand 


15mm 

Item Number EPWP5215-01
Focal Length 3mm
Size (L) 93mm x (W) 43mm
Weight 206 g/7.3 oz
Barrel Size/Type 1.25" (31.7mm) / Tapered barrel
Eye Relief 16.3mm
Field Stop Diameter 15.5mm
Coatings EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 6 in 3 groups
Filter Thread Standard 1.25" Filter Thread (M28.5 x 0.6)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand

 

20mm

Item Number EPWP5220–01
Focal Length 20mm
Length 71mm
Width 43mm
Weight 181.4 grams; 6.4 oz.
Barrel Size/Type 1.25" O.D. / Double Taper
Eye Relief 15mm
Field Stop Diameter: 18.2mm
Coatings: EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 5 Elements in 3 Groups; Edge Blackened
Filter Thread Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand

 

25mm

Item Number EPWP5225–01
Focal Length 25mm
Length 67.7mm
Width 43mm
Weight 181.4 grams; 6.4 oz.
Barrel Size/Type 1.25" O.D. / Double Taper
Eye Relief 16.4mm
Field Stop Diameter 18.2mm
Coatings EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 4 Elements in 2 Groups; Edge Blackened
Filter Thread Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand

30mm
Item Number EPWP5230–01
Focal Length 30mm
Length 75.5mm
Width 47.8mm
Weight 204.1 grams; 7.2 oz.
Barrel Size/Type 1.25" O.D. / Double Taper
Eye Relief 19.9mm
Field Stop Diameter 27.2mm
Coatings: EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 4 Elements in 2 Groups; Edge Blackened
Filter Thread Fits Standard 1.25-inch Dia. Thread in Filters (1.125-inches x 42 TPI)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand

 

40mm

Item Number EPWP5240–01
Focal Length 40mm
Length 96,6mm
Width 61.8mm
Weight 385.5 grams; 13.6 oz.
Barrel Size/Type 2.0" O.D. / Double Taper
Eye Relief 27.1mm
Field Stop Diameter 36.3mm
Coatings EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups 4 Elements in 2 Groups; Edge Blackened
Filter Thread Fits Standard 2.0-inch Dia. Thread in Filters (48mm x 0.75mm)
Waterproof O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup Removable Flip-Down Style Soft Silicone Rubber
Lens Caps Slide-on Top and Bottom
Materials Optical Glass; Aluminum; Steel; Silicone Rubber
Markings Laser Engraved: Focal Length; Series; Serial Number; Brand

Shipping

We know that once you've placed your order, you are anxious to receive it! We make every effort to get your order shipped out to you as quickly as possible.

As soon as you place your order, you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorized your credit card for the purchase. We will process the charges to your credit card and your order will ship within five business days from the date of your order. We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at info@telescopetek.com.

Standard shipping time in the US is between 3-5 business days, though it can vary slightly depending on the destination. We typically For updates on your shipment you can enter your tracking number here.

We distribute nationwide via UPS and Fedex. Unfortunately, at this time we are not able to provide expedited or international shipping.