Chroma V-Bessell photometric filter - 2″ Mounted

CHF 699

Part no. FILTER-0037

Disponible en stock chez le fournisseur

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Chroma V-Bessell photometric filter

Visit Chroma V-Bessell photometric filter is a high-precision filter designed for astronomical photometry. Optimized to capture the green spectral band (approx. 500-600 nm), it is ideal for scientific studies of stars, galaxies and variable objects. This filter complies with Johnson-Cousins/Bessell photometric standards, guaranteeing reliable measurements that are comparable with historical databases.

Key features

  • Spectral transmission:
    • Focused on the green (V) band, with high transmission and effective UV and IR wavelength cut-off.
  • Compatibility:
    • Parfocal with other Chroma photometric filters (U, B, R, I), eliminating the need for refocusing.
  • Sustainable construction:
    • Multi-layer anti-reflective coatings to minimize halos and stray reflections.
    • Blackened edges to prevent internal reflections.
    • Standard 2 mm thickness, compatible with most filter wheels.

Use and technology behind Bessell filters

Bessell filters have been designed to reproduce the characteristics of the original Johnson-Cousins filters, while adapting to modern CCD/CMOS sensors. They are widely used in astrophotometry, thanks to their ability to provide accurate, standardized measurements of the brightness and color of celestial objects.

Unlike the tinted glass filters used historically, modern Bessell filters use advanced dielectric coatings that offer stable transmission and better resistance to aging. The V-Bessell filter is particularly suitable for studying the visible luminosity of stars and determining color indices such as g'-r'. It is essential for photometric observations of stellar variables, exoplanets and star clusters.

Applications

  • Scientific photometry (UBVRI):
    • Precise measurement of brightness in the green band.
    • Studies of stellar variables, exoplanets and transient events.
  • Advanced astrophotography:
    • The perfect complement to other UBVRI filters for creating scientifically calibrated data sets.
  • Scientific research:
    • Spectral analysis and study of the physical properties of stars and galaxies.

Conclusion

Visit Chroma V-Bessell filter combines scientific tradition and technological innovation. It is an indispensable tool for amateur or professional astronomers wishing to carry out precise photometric studies in the green band of the visible spectrum. Its robust design and optical performance make it an essential choice for scientific imaging.

Filter typePhotometric
BandwidthBessell system
ParafocusingData currently being integrated, estimated availability shortly
WavelengthData currently being integrated, estimated availability shortly
WeightData currently being integrated, estimated availability shortly
In the boxData currently being integrated, estimated availability shortly
Special featuresData currently being integrated, estimated availability shortly

Why choose Deep Space Astronomy?

Because astronomy is our passion! Our team of experts is here to guide you in your choice of equipment, from beginner telescopes to the most sophisticated astrophotography equipment.

  • Personalized advice: Take advantage of our expertise to choose the ideal instrument for your needs and budget.
  • A wide choice of products: We offer a rigorous selection of quality equipment from the leading brands on the market.
  • Customized training: Expand your knowledge of astronomy with our online and face-to-face training courses.
  • Responsive after-sales service: We're here to help you make the most of your experience.

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