Explore Scientific 25mm 52° Series Waterproof Eyepiece
Manufacturer Part # EPWP5225-01
Manufacturer Part # EPWP5225-01
Looking for something out of the ordinary for your next eyepiece? The Explore Scientific 52° series is a strong contender for necessary addition to your eyepiece collection.
Looking for something out of the ordinary for your next eyepiece? The Explore Scientific 52° series is a strong contender for necessary addition to your eyepiece collection. It's long 15mm of eye relief makes it a joy to put in your scope night after night.
Long considered the “standard” eyepiece that is often supplied with telescopes that are sold by various suppliers, the 25mm focal length category is perhaps the most used eyepiece in the world. Like the 20mm, these eyepieces are great for binoviewer devices, and the 25mm is probably the longest focal length of the mid-power range eyepieces before you get into longer focal lengths.
While some might question the need for Argon-Purged waterproof eyepieces, it is a nice concept knowing the inside of your eyepiece will be just as perfect as the day it left the assembly line. No need to worry about dust, or cleaning solution, finding its way inside the elements. These eyepieces are designed to be used night after night giving you complete peace of mind about their performance.
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 |
Barrel Size | 1.25" |
---|---|
Eye Relief | 16.4mm |
Field of view | 52° |
Field Stop | 18.2mm |
Focal Length | 25mm |
Number of optical elements | 4 |
Weight | 6.4 oz |
Warranty | 1 year |
{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}