Nebula Filter CLS 2.0-inch Brand_Alpen The longest focal length in

The longest focal length in the 52° Series with the longest eye relief

5 Moon map features a captivating image from accomplished astronomer and astrophotographer Dr

combining the 10x42 Waterproof Performance Roof Binoculars with the Sky View 70 Refractor Telescope

the CMOS color cameras can also deliver an image quality that comes close to that of CCD monochrome cameras

Nebula Filter CLS 2.0-inch Brand_Alpen The longest focal length inExplore Scientific Nebula Filter 1. 25" CLS Range from 436nm to 536nm with peak at 488nm. Transmission 98. 3% This is a general purpose light pollution reduction filter designed for observing the broad range of deep sky objects including nebulae and galaxies. The CLS does a good job of increasing contrast, providing a darker sky background.