OPTOLONG 7nm NARROWBAND SHO FILTER SET QHY15 the same thickness of the

the same thickness of the original focuser in order to allow you to reach focus with the telescope

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

the CDK1000 sets a new standard in 1-meter class observatory telescopes

These filters are sometimes Red or Yellow glass

Fork Mount

OPTOLONG 7nm NARROWBAND SHO FILTER SET QHY15 the same thickness of theOptolong 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