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and varying telescope apertures
Designed for eyepiece use rather than imaging
Dual-band operation on the 2m and 70cm amateur bands allows flexible use across common VHF and UHF frequencies
This filter allows nearly 100% transmission of O-III and H-beta radiation
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Antlia 4.5nm Edge Filters Size:SII 50mm and varying telescope aperturesAntlia 4. 5nm EDGE Filters (H alpha, SII, OIII) Overview Antlia 4. 5nm EDGE Filters are engineered to overcome the challenges of conventional narrowband filters, which often experience significant transmission loss due to Central Wavelength (CWL) shifts. With a guaranteed transmission rate of over 90% (T>90%) within a 1nm range of the central bandwidth, Antlia 4. 5nm EDGE Filters deliver outstanding performance for both long focal ratios and fast
