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you’ll notice needle-sharp stars
94% transmission at 656nm (H-alpha)
the more unwanted noise appears in the image
Fast polar alignment routine
Astronomik H-alpha 12nm CCD MaxFR Clip-Filter Sony alpha 7
ZWO 2" H-alpha SII OIII 7nm Narrowband Filter Set. PHD2 compatible you’ll notice needle-sharp starsImproved 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
US$ 165.00
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US$ 322.50
