The Explore Scientific 40mm focal length and own field of view (AFOV) of 62 degrees is a new, more affordable proposition for people looking for a very good "for years" eyepiece for nebula-galactic observations at zooms close to the minimum usable. According to the high production standards that have been characterized by Explore Scientific glasses for years, the eyepiece is water-proof, filled with argon and offers an outstanding retraction of the exit pupil equal to 28 mm.
• focal length: 40 mm
• own field of view: 62 °
• offset of the exit dust: 28 mm
• Luminaire diameter: 2 "
• eyecup: rubber, with the possibility of swiveling
• water resistance: yes, filled with Ar
• weight: 650 g