Optolong SII-CCD 6.5nm (2'') CCD Filter [OPTO-SII-CCD65-2]
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About Optolong SII-CCD 6.5nm (2'') CCD Filter [OPTO-SII-CCD65-2]
Optolong: Extra narrow band SII-CCD 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow).
- Qualité de verre Verre Schott
- Epaisseur 2mm
- Qualité de surface 60/40 norme MIL-O-13830
- Transmission 80% sur SII 672nm
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$24.00 USD - [zus] USPS Ground Shipping (7-14 days)
Size0 in × 0 in × 0 in