OPTOLONG 7nm NARROWBAND SHO FILTER SET QHY15 These filters are sometimes Red

These filters are sometimes Red or Yellow glass

This adapter is made anodized aluminium and adds an optical thickness of 5mm

Not compatible with the 071MC Pro

The absolute encoders provide high-accuracy

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

OPTOLONG 7nm NARROWBAND SHO FILTER SET QHY15 These filters are sometimes RedOptolong 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