Chroma Sloan u' photometric filter - 2″ Mounted

Chroma Sloan u' Photometric Filter

Visit Chroma Sloan u' photometric filter is a precision filter designed to capture the near ultraviolet band (approx. 320-400 nm) for photometric studies according to the Sloan Digital Sky Survey (SDSS) system. This filter is ideal for scientific observations and advanced astronomical imaging, enabling precise measurement of the magnitude of stars, galaxies and other celestial objects in the u' band. Constructed with high-quality materials and advanced coatings, it guarantees reliable performance and exceptional durability.

Key features

• Spectral transmission:
  • Focused on the near ultraviolet band (u'), with optimized transmission around 360 nm.
  • Effective blocking of out-of-band wavelengths to prevent light interference.
• Sustainable construction:
  • Sputter coatings for stable transmission and increased resistance to ageing.
  • Blackened edges to eliminate stray reflections.
  • Standard 3 mm thickness, compatible with modern filter wheels and optical systems.
• Compatibility:
  • Parfocal with other Sloan filters (g', r', i', z'), eliminating the need for refocusing.
  • Works perfectly with modern CCD and CMOS cameras, even on high-speed telescopes.

Sloan filter technology and application

Photometric system filters Sloan Digital Sky Survey (SDSS) filters have been developed to provide uniform, precise spectral coverage in five bands (u', g', r', i', z'). Unlike traditional UBVRI filters, Sloan filters use modern dielectric coatings that offer well-defined transmission windows and excellent spectral stability. These filters are specially designed to meet the demands of modern CCD/CMOS sensors, which require strict control of reflections and halos.

The Sloan u' filter is particularly useful for studying hot stars, active galaxies or star-forming regions where ultraviolet emission is predominant. It provides precise magnitude data in the u' band, essential for characterizing the physical properties of celestial objects, such as their temperature or chemical composition.

Applications

• Scientific photometry (Sloan SDSS):
  • Precise measurement of brightness in the near ultraviolet band.
  • Study of young stars, active galaxies and HII regions.
• Advanced astrophotography:
  • Perfect complement to other Sloan filters (g', r', i', z') to produce scientifically calibrated data sets.
• Astronomical research:
  • Detailed spectral analysis and physical characterization of celestial objects in the near ultraviolet.

Conclusion

Visit Chroma Sloan u' photometric filter is an indispensable tool for amateur or professional astronomers wishing to carry out precise photometric studies in the near ultraviolet band. Its robust design, optimized optical performance and compatibility with modern sensors make it an essential choice for scientific imaging and advanced astronomical observation.