ZWO 1.25" SII 7nm Narrowband Filter - SII7nm125 type-cameras-and-imaging-accessories The inner liner radiant barrier

The inner liner radiant barrier of the TeleGizmos 365 Series Telescope Cover provides radiant heat protection

and evenness of illumination by adjusting the distance between the Abbe condenser and objective or by adjusting the condenser''s iris diaphragm

The 2" barrel is threaded to accept standard screw-on filters

16-character LCD screen with adjustable backlighting

ZWO 1.25" SII 7nm Narrowband Filter - SII7nm125 type-cameras-and-imaging-accessories The inner liner radiant barrierThe ZWO SII 7nm Narrowband Filter passes light at the 672nm wavelength with a bandpass of 7nm for nebula observation. It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants. Use this SII (Sulfur II) with H alpha and Oxygen III narrowband filters (SHO Set) for tricolor CCD astrophotography. This rendition of the ZWO SII 7nm Filter is housed in a 1. 25" threaded metal cell and can be used in 1. 25"