new Altair 4nm DualBand Filter Sii Oiii version
Posted: Tue Feb 21, 2023 4:52 pm
Hi there, we have the new Altair Sii Oiii 4nm DualBand ULTRA filter in stock.
This filter transmits only the Sii and Oiii wavelengths, and can be used in extreme light pollution such as in urban areas, or with a full moon. It's well suited to be used tandem with the Altair Ha Oiii DualBand filter, to gather twice the Oiii data, seeing Oiii is usually much fainter!
These filters are part of the "Certified" range we started in 2021. Each filter comes with individual test report, and unique serial number.
PS : Our USA customers can order from Land Sea and Sky
This filter transmits only the Sii and Oiii wavelengths, and can be used in extreme light pollution such as in urban areas, or with a full moon. It's well suited to be used tandem with the Altair Ha Oiii DualBand filter, to gather twice the Oiii data, seeing Oiii is usually much fainter!
These filters are part of the "Certified" range we started in 2021. Each filter comes with individual test report, and unique serial number.