
Reference: ZWEAF-N
Brand: ZWO
Reference: ZWEAF-N
Brand: ZWO
Reference: POA-URANUS-C
Brand: Player One
Reference: ZWASI120MINI
Brand: ZWO
Reference: POA-ACS
Brand: Player One
Reference: AS-FRA400
Brand: ASKAR - Sharpstar
Reference: AS-SET-DUO-D1D2
Brand: ASKAR - Sharpstar
Reference: ZWDC-Y-SPLIT
Brand: ZWO
Reference: AS-REDFRA400
Brand: ASKAR - Sharpstar
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6.5nm Optolong SII Filter
This filter is a 6.5 nm SII filter designed for observing nebulae with a wavelength centered at 672 nm and reduces the transmission of certain wavelengths of light.
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This filter is a 6.5 nm SII filter designed for observing nebulae with a wavelength centered at 672 nm and reduces the transmission of certain wavelengths of light, especially those produced by artificial lights , including mercury vapor, high and low pressure sodium vapor lamps and unwanted sodium vapor lamps. natural light caused by the emission of neutral oxygen into our atmosphere (eg Skyglow).
Narrowband imaging can be obtained by combining the filters of the SHO set (H-ALPHA, OIII, SII), in lunar and light pollution conditions, in this way the equipment does not remain stationary for weeks .
The SII filter does not eliminate the effects of light pollution and does not increase the brightness of the photographed object, but on the contrary increases the contrast between the nebula and the night sky, which facilitates image processing.
This 6.5nm narrowband SII filter is designed for use in filter wheels, in filter holder drawers or directly on the camera (not valid for those not mounted in the cell)
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6.5nm Optolong SII Filter
This filter is a 6.5 nm SII filter designed for observing nebulae with a wavelength centered at 672 nm and reduces the transmission of certain wavelengths of light.
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