ZWO 2" OIII 7nm Narrowband Filter svbony planetary camera Full-frame imaging support with a

Full-frame imaging support with a 44 mm image circle

The question of which full-width-half-maximum (FWHM) is the "best" shows up in emails on our monitor or when talking to customers at fairs very often

you have the possibility to expose longer - probably 30 min instead - to record fainter structures

Focal length of primary mirror：364mm

The ASIAIR Mini replaces much of that complexity with a compact device that sits directly on your imaging rig

ZWO 2" OIII 7nm Narrowband Filter svbony planetary camera Full-frame imaging support with aThe ZWO OIII 7nm narrowband filter is designed for nebula observation allowing 7nm bandwidth of light centred on a wavelength of 500nm, which corresponds to OIII emission lines, blocking out all other light. Adding the ZWO OIII narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favourite nebulae in a totally new light. No matter how polluted your skies may be! Combine it with H alpha and SII