Optolong L-Pro Filter for Deep Sky narrowband Imaging - 2" adapter Universal Self-Centering Saddle (USCS)

Universal Self-Centering Saddle (USCS)

The Scope Cloaks are available in 2 sizes:

Explore Scientific 100° Series hyper-wide field eyepieces are optimized to produce high contrast

Off Axis Guiders have been around for a long time

The longer wavelength red light produced by our Night Reader is detected by the cone cells in your eye and does not deplete Rhodopsin in your rod cells

Optolong L-Pro Filter for Deep Sky narrowband Imaging - 2" adapter Universal Self-Centering Saddle (USCS)1. Optolong L Pro Introduction Optolong L Pro (L Professional) filter is designed to improve the visibility of various deepsky objects. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i. e. skyglow). Together with