Optolong L-Quad Enhance Filter 2" Optolong and explore the universe with

and explore the universe with the Celestron mobile app for iOS and Android

Speaking of which

and the Y-axis shows the periodic error

easier to use

Like other 'Naglers'

Optolong L-Quad Enhance Filter 2" Optolong and explore the universe withDescription L Quad Enhance Filter is a quad bandpass light pollution suppression filter for colour cameras. Better suppression of starbursts; Higher contrast and more details of the celestial bodies; Better colour saturation; Great performance on signal to noise ratio (SNR); Near IR cut off to 1000nm, reducing the effects of IR noise; Good for night sky from Bortel 1 to Bortel 7 levels; Suitable for wide range of deep sky targets cover most nebulae,