Explore Scientific O-III Nebula Filter - 2" - 310200 IR Filters This shifting is indeed minimal

This shifting is indeed minimal

Celestron CPC Deluxe 800 HD Computerized Telescope Specifications

The Celestron C5 Spotting Scope is an ideal choice for the serious bird watcher

and mirror star diagonal

57 arc seconds

Explore Scientific O-III Nebula Filter - 2" - 310200 IR Filters This shifting is indeed minimalExplore Scientific Oxygen III Nebula Filter Fits 2" Eyepieces Narrowband Nebula Filter Useful for viewing objects that glow in O III light Bandwidth of 483 nm to 511 nm, peak at 496 nm 96. 7% Transmission Fits 2" Eyepieces This is the highest contrast Nebula Filter in the series, a Narrowband line filter for only the two emission lines of oxygen. A great choice for observations of supernova remnants and other nebulae that glow in O III emission light.