EXPLORE SCIENTIFIC 20MM 52° SERIES WATERPROOF EYEPIECE
Brand: Explore Scientific
Estimated Arrival: Between Aug 22 and Aug 25. * ETA for USA only
Shipping & Returns: Fast Shipping. Free Returns. All The Time.
Often considered the perfect mid-range focal length for most amateur telescopes, the 20mm on the ED127 at f7.5 produces a 1 degree true field of view. Perfect for the Messier Marathon, or running down the Herschel Catalog. The 20mm 52° Series is also a good selection for most binoviewers with its relatively small size and magnification range.
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.
|Weight||181.4 grams; 6.4 oz|
|Barrel Size/Type||1.25" O.D. / Double Taper|
|Field Stop Diameter||18.2mm|
|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|
At StellaScopes.com we stand behind every purchase that we make 100%. If for any reason you are unsatisfied with your purchase. Simply send the item back to us unused in it's original packaging within 30 days of it's delivery.
Extensive Manufacturer Warranty
All of our manufacturers offer very generous warranty coverage of the products sold through our store. Based upon which brand is purchased that item is also covered from defects in workmanship and quality.
- Explore FirstLight Branded Products: Limited USA One Year Warranty.
- Explore Scientific Branded Telescopes: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty
- Explore Scientific Branded Eyepieces: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty
- Explore Scientific Branded Non-Electronic Telescope Accessories: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty
Levenhuk: All Levenhuk telescopes, microscopes, binoculars and other optical products, except for accessories, carry a lifetime warranty against defects in materials and workmanship; all accessories have a 6-month warranty. This warranty does not cover consumable parts, such as bulbs (incandescent, LED, halogen, energy-saving and other types of bulbs), batteries (rechargeable and non-rechargeable), electrical consumables, etc.
Vixen Optics:Every Vixen telescope, astronomical binocular, and mount is warranted by Vixen Optics to be free of defects in materials and workmanship for a period of 5 years from the date of original purchase in the U.S.A. and Canada. Five year warranty covers all non-electrical/mechanical parts. Electrical parts are warranted for 1 year from date of purchase.