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

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.