TEST SELECTOR

Step 1 – Select your optimal narrowband filter according to the criteria below:

Step 3 – Select filter category based on your entries:

Our 6.5nm Narrowband/Highspeed Filters are less critical due to their wider halfbandwidth, and therefore continue to be divided into only two categories, as before. Please select the correct color from the graphic above to determine your required filter family:

•  6.5nm Narrowband Filters, CMOS-optimized – for aperture ratios > f/3.4
•  6.5 nm f/2 Highspeed Filters, CMOS-optimized – for aperture ratios ≤ f/3.4

Baader Planetarium offers three categories of 3.5nm/4nm Ultra-Narrowband/Highspeed filters with different pre-shift to the respective central wavelength. Please select the correct color from the graphic above to determine your required filter family:

•  3,5 / 4 nm Ultra-Narrowband Filters, CMOS-optimized – for aperture ratios > f/3.4
•  3,5 / 4 nm f/3 Ultra-Highspeed Filters, CMOS-optimized – for aperture ratios f/3.4 bis f/2.3
•  3,5 / 4 nm f/2 Ultra-Highspeed Filter, CMOS-optimized – for aperture ratios < f/2.3