Seti Ha, SII ja OIII 7nm filtreid ZWO 50,8 mm

The 3-piece narrowband filter set from ZWO is designed for digital imaging and allows you to obtain "Hubble-like" or "Hubble Palette" images by reducing the effects of public lighting and the Moon.

Features

• 7nm bandwidth - peak at 90% transmission
• Cut-off in infrared (700/1100nm)
• Schott glass
• Glass thickness: 1.85mm
• Precise optical polishing to ensure a precise wavefront at lambda/4 and parallelism <30" of arc on both surfaces
• Double-sided optical coating
• Anti-reflection treatment
• CNC-machined aluminum cell construction

Compatibility

These filters are compatible with CCD imaging, digital photography (modified housing) and allow for high contrast compared to the sky background on many nebulae.