ZWO LRGB FILTERS flat field 110 and 130 tripods

110 and 130 tripods

ZWO-OIII7nmD31

The secondary mirror is oversized in order to have a fully illuminated field and to avoid any vignetting

The optional SkyWatcher coma corrector for f/5 Newtonians corrects the coma superbly

ZWO LRGB FILTERS flat field 110 and 130 tripodsZWO LRGB filters are specially designed for deep space photography with monochrome cameras. The width of their bandpass is balanced with the spectral response of the ZWO cameras, starting with the ASI1600MM Pro. This results in the exposure time of each channel having a ratio of 1: 1: 1, meaning the exposure time in red is equal to the exposure time in green and in blue. The L filter is an IR UV cut filter for the luminance. The filters are parfocal