S-II Filters

The S-II line of the simply ionized sulfur is deep red (671nm and 673nm), not as prominent as H-alpha but nevertheless very interesting, as very fine details are visible here in different objects.

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The Altair Astro Premium Sii 6.5nm filter is designed for astro imaging of nebulae with Mono CCD or CMOS cameras, blocking light pollution by cutting out the light pollution wavelengths. The filter blocks UV IR and has an anti-reflection AR coating.
 
199.00 €
Astronomik SII CCD Filter, 12 nm, Clip-Filter EOS XL
299.00 €
Astronomik SII CCD Filter, 12 nm, 50x50mm
339.00 €
Astronomik SII CCD Filter, 12 nm, 1.25 inch mounted
129.00 €
Astronomik SII CCD Filter, 12 nm, 2 inch mounted
299.00 €
Astronomik SII CCD Filter, 12 nm, d=27mm unmounted
129.00 €
Astronomik SII CCD Filter, 12 nm, d=50mm mounted
299.00 €
Astronomik SII CCD Filter, 12 nm, SC mounted
299.00 €
Astronomik SII CCD Filter, 12 nm, Clip-Filter EOS APS-C
189.00 €
Astronomik SII CCD Filter, 12 nm, Clip-Filter EOS M
209.00 €
Astronomik SII CCD Filter, 12 nm, d=31mm mounted
159.00 €
Astronomik SII CCD Filter, 12 nm, d=36mm mounted
189.00 €