ZWO 2" H-alpha SII OIII 7nm Narrowband Filter Set. PHD2 compatible Fast polar alignment routine

Fast polar alignment routine

increase light transmission through the optical path to deliver crisp

you’ll notice needle-sharp stars

we name the planetary cameras after planets (They are Mercury

ZWO 2" H-alpha SII OIII 7nm Narrowband Filter Set. PHD2 compatible Fast polar alignment routineImproved 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