ZWO 2" H-alpha SII OIII 7nm Narrowband Filter Set. PHD2 compatible we name the planetary cameras

we name the planetary cameras after planets (They are Mercury

which avoids accidentally pressing the side button

you’ll notice needle-sharp stars

Astronomik H-alpha 12nm CCD MaxFR Clip-Filter Sony alpha 7

increase light transmission through the optical path to deliver crisp

ZWO 2" H-alpha SII OIII 7nm Narrowband Filter Set. PHD2 compatible we name the planetary camerasImproved ZWO Narrowband Filters Since mid 2018, ZWO has supplied an improved version of their narrowband filters. The improvement is most noticeable when imaging night sky landscapes containing very bright stars, particularly with the H alpha and SII filters. With the updated OIII filters, the difference is more subtle. Production of the 2" version began at the end of 2019 and it has only ever been available in this improved form. For this reason, ZWO