OPTOLONG 7nm NARROWBAND SHO FILTER SET QHY15 2 x AR-Coating

2 x AR-Coating

A vast range of accessories can be connected with the Dual-DEC system such as Vixen saddles

This configuration is designed to accommodate very heavy instruments

but it can also increase tube turbulence due to unnecessary thermal output

5267 times the human eye

OPTOLONG 7nm NARROWBAND SHO FILTER SET QHY15 2 x AR-CoatingOptolong 7nm Narrowband filters boost the contrast of emission nebulae and supernova remnants for professional results, even under a bright sky affected by light pollution. This filter is used in combination with the OIII and SII filter to compose a narrowband colour image. The 7nm band pass (6. 5nm for OIII & SII) is only 2% of the entire visible spectrum, increasing the signal to noise ratio and delivering high contrast images and extremely dark