Good wide-angle spectroscope from Explore Scientific, with a focal length of 25 mm, its own 70 ° field of view, in a 2-inch bezel. The 70 ° apparent field of view (AFOV) eyepiece is 40% larger in the field of view and almost twice as large in the sky compared to typical 50-degree Ploessl glasses with the same focal length.
• focal length: 25 mm
• weight: 333 g (net)
• Luminaire diameter: 2 "/ 50.8 mm
• eyecup: rubber, with the possibility of swiveling