Antlia

The photographic filter provides high contrast solar images in the calcium light around 393.3 nm.

• The filter is for photography only, not for visual observation of the sun.
• Housed in a 1.25" low profile filter cell
• Transmittance at 393.3nm - FWHM is 3nm
• Ideal for use with photographic objective solar filters, Herschel prisms or other solar prisms

Antlia 3 nm H-Alpha ultra - narrow band filter for astrophotography - images with extreme contrast even with strong light pollution

• 1.25" mounted with low-profile filter cell
• Suitable for telescopes and lenses with a focal ratio of f/3 and lower
• Schott optical base substrate
• Blackened edges to avoid internal reflections
• Extremely narrow bandwidth of only 3 nm for maximum contrast
• Central wavelength 656.3 nm
• Filter thickness 2 mm
• Comes in convenient plastic transport box

Antlia 3 nm H-Alpha ultra - narrow band filter for astrophotography - images with extreme contrast even with strong light pollution

• 2" mounted with low-profile filter cell
• Suitable for telescopes and lenses with a focal ratio of f/3 and lower
• Schott optical base substrate
• Blackened edges to avoid internal reflections
• Extremely narrow bandwidth of only 3 nm for maximum contrast
• Central wavelength 656.3 nm
• Filter thickness 2 mm
• Comes in convenient plastic transport box

Antlia 1.25" 3 nm O-III ultra - narrow band filter for astrophotography - images with extreme contrast even with strong light pollution

• 1.25" mounted with low-profile filter cell
• Suitable for telescopes and lenses with a focal ratio of f/3 and lower
• Schott optical base substrate
• Blackened edges to avoid internal reflections
• Extremely narrow bandwidth of only 3 nm for maximum contrast
• Central wavelength 500,7 nm
• Filter thickness 2 mm
• Comes in convenient plastic transport box

Antlia 2" 3 nm O-III ultra - narrow band filter for astrophotography - images with extreme contrast even with strong light pollution

• 2" mounted with low-profile filter cell
• Suitable for telescopes and lenses with a focal ratio of f/3 and lower
• Schott optical base substrate
• Blackened edges to avoid internal reflections
• Extremely narrow bandwidth of only 3 nm for maximum contrast
• Central wavelength 500,7 nm
• Filter thickness 2 mm
• Comes in convenient plastic transport box

Antlia 1.25" 3 nm S-II ultra - narrow band filter for astrophotography - images with extreme contrast even with strong light pollution

• 1.25" mounted with low-profile filter cell
• Suitable for telescopes and lenses with a focal ratio of f/3 and lower
• Schott optical base substrate
• Blackened edges to avoid internal reflections
• Extremely narrow bandwidth of only 3 nm for maximum contrast
• Central wavelength 671,6 nm
• Filter thickness 2 mm
• Comes in convenient plastic transport box

Antlia 2" 3 nm S-II ultra - narrow band filter for astrophotography - images with extreme contrast even with strong light pollution

• 2" mounted with low-profile filter cell
• Suitable for telescopes and lenses with a focal ratio of f/3 and lower
• Schott optical base substrate
• Blackened edges to avoid internal reflections
• Extremely narrow bandwidth of only 3 nm for maximum contrast
• Central wavelength 671,6 nm
• Filter thickness 2 mm
• Comes in convenient plastic transport box

The photographic filter is designed for solar photography in calcium light.

• Telescope side connection is 1.25" and 2".
• Camera side mount is 2" with ring clamp
• Transmission at 393.3nm - FWHM is 3nm
• Maximises contrast of sunspots, granulation and faculae on the solar surface
• Ideal for use with a Herschel prism
• The filter is not intended for visual viewing

Antlia Solar Discover Dualband ERF filter 130 mm in cell

Antlia Solar Discover Dualband ERF filter 150 mm in cell

Antlia Solar Discover Dualband ERF filter 200 mm in cell

The photographic filter increases contrast on the solar surface in the calcium and H-alpha ranges.

• Telescope side connection is 1.25" and 2".
• Camera side connection is 2" with ring clamp
• The filter has a wider transmission in the calcium and H-alpha ranges
• Enhances the contrast of sunspots, granulation and details on the edge of the "solar disk
• Ideal for use with a Herschel prism
• Not intended for visual observation