Comet SWAN Šmidt-Kasegreno filtras

The Lumicon 1.25" Comet Filter, a narrow band-pass filter (25nm), isolates the 501nm OIII line and both C2 lines at 511nm and 514nm. The high contrast of the filter reveals the delicate ionized tail of gaseous comets, allowing you to see their full extent. The Comet Filter also helps you to better distinguish gaseous comets from dusty comets, which normally show little contrast gain.

To ensure that your Lumicon filter remains the World's Best, the strictest quality control standards are employed throughout the production process. Each Lumicon Comet Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the primary emission lines at 501, 511 & 514nm.

Comet Filter

Filter Construction:

Lumicon nebula filters are made using thin-film dielectric coatings on optically flat glass. These exclusively designed dielectric coatings consist of over 30 alternating layers of several different materials. Each layer is about a wavelength of light thick and has a thickness accurate to 2 - 3 angstroms. Lumicon nebula filters include anti-reflection coatings on both sides to prevent ghosting and increase light transmittance. They also have a hard, electron-beam deposited coating for mechanical protection. While still delicate, Lumicon filters may be carefully cleaned with isopropyl alcohol, or Lumicon’s Advanced Cleaning Kit.

Mechanical Design:

These filters thread directly into most eyepieces and telescope accessories. Threads are standard for 1.25" filters. 48mm filters are standard for 2" O.D. eyepieces.