Description Eyepieces at or near the 10mm range are often considered a mandatory focal length in your collection, as this focal length range is departure point from medium power eyepieces for most telescopes for amateur astronomers. Fainter deep sky objects that do not have the inherent brightness to be observed at higher powers are often […]

Description Solidly in the mid-magnification range for most amateur telescopes, the 15mm is a true workhorse for visual observers. If you love deep sky observing, eyepieces in this focal length range not only give healthy increases in magnification, but the contrast enhancement of giving a darker background sky can make all the difference of how […]

Description 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 […]

Description 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 […]

Description Loved by deep sky observers, a 30mm focal length eyepiece produces a large exit pupil which floods your dilated eye with light, which is needed to see faint galaxies and nebulae. Low power eyepieces are very important to observers for a variety of reasons: Their wide true field of view make object location and […]

Description The longest focal length in the 52° Series with the longest eye relief, the 40mm is also the only 2.0-inch O.D. eyepiece in this series. Explore Scientific now has three 40mm eyepieces in its collection, the other two are the 40mm 62° Series, and the 40mm 68° Series. At this focal length, this eyepiece […]

Description Explore Scientific’s Astro R-Lite is a rugged red beam flashlight designed to specifically meet the needs of amateur astronomers. This versatile device will allow you to read star charts or make equipment changes without disturbing the crucial adjustments your eyes have made to dark conditions. The Astro R-Lite is the perfect size to be […]

Features Waterproof Fogproof BAK4 Optics Long Eye Relief Fully Multi-Coated Metallic Coated PXC Phase Coating Cleaning Pen Included Specs Item Number 390SR Magnification 10x Field of View 330/1000yds Waterproof Yes Fogproof Yes Coating Fully Multi-coated, Metallic Ctg, PXA Phase Ctg Eye Relief 16mm Exit Pupil 4.2mm Focuser Type Center Objective Lens Diameter 42mm Close Focus […]

Features Waterproof Fogproof BAK4 Optics Long Eye Relief Fully Multi-Coated Metallic Coated PXA Phase Coating Cleaning Pen Included Video Specs Item Number 387SR Magnification 8x Lens Diameter 42mm Field of View 393/1000yds Waterproof Yes Fogproof Yes Lens Coatings Fully-Multi-Ctd, Metallic Ctg, PXA Phase Ctg Eye Relief 17mm Exit Pupil 5.2mm Focuser Type Center Close Focus […]

DISCONTINUED 2019*Note that this is a discontinued product. This legacy information is for reference only. See our Alpen Binoculars Collection for current products. Features Waterproof Fog-proof BAK4 Optics Long Eye Relief Multi-Coated Specs Item Number 385 Magnification 10X Field of View 304/1000yds Waterproof Yes Fogproof Yes Lens Coatings Multi-Coated Eye Relief 19mm Exit Pupil 4.2mm […]