Filtre Hα 7nm Pegasus – 2″ Monté

CHF 209

Référence FILTER-0015

Disponible en stock chez le fournisseur

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Filtre Pegasus Astro H-alpha (Hα)

The filter Pegasus Astro H-alpha (Hα) is a high-quality narrow-band filter designed for astrophotography. Here are its detailed features:

Technical specifications

  • Diameter : 50.8 mm (2 inches)
  • Thread : M48 x 0.75 mm
  • Total thickness : 7.5 mm (5 mm filter body + 2.5 mm thread)
  • Bandwidth : 7 nm
  • Central wavelength : 656 nm
  • Transmission : Tave > 80% à 656 nm
  • Polishing : 1/4 wavelength
  • Coating : Anti-reflective multilayer
  • Type : Narrow-band interference filter

Features and benefits

  • Optimum transmission : Le filtre offre une transmission supérieure à 80% à la longueur d’onde centrale de 656 nm, correspondant à la raie d’émission de l’hydrogène alpha.
  • Narrow bandwidth : Avec une bande passante de seulement 7 nm, ce filtre isole efficacement la raie d’émission Hα, permettant une excellente séparation des détails spectraux.
  • Parafocality: Comme tous les filtres Pegasus Astro, le filtre Hα est parafocal avec les autres filtres de la série, simplifiant le processus d’acquisition d’images.
  • Superior optical quality : The 1/4-wavelength polish guarantees excellent image quality and optimum sharpness.
  • Anti-reflective coating : Multi-layer anti-reflective coating eliminates halos, ghosting and unwanted reflections.
  • Durability: The filter is designed to withstand scratches and temperature changes.
  • UV and IR blocking : The filter effectively blocks UV and IR wavelengths, improving image sharpness and reducing halos.

Astrophotography applications

  • Imagerie des nébuleuses d’émission : Idéal pour capturer les détails des nébuleuses riches en hydrogène ionisé.
  • Reducing light pollution : La bande passante étroite permet d’imager efficacement même dans des zones à forte pollution lumineuse.
  • False color imaging : Used in the Hubble palette technique (SHO) to create spectacular false-color images.
  • High-resolution imaging : The narrow bandwidth enables high-contrast images to be obtained, revealing fine details in nebular structures.

Conclusion

In conclusion, the filter Hα Pegasus Astro est un outil de haute qualité pour l’astrophotographie spécialisée, offrant une excellente transmission dans une bande étroite centrée sur la raie d’émission de l’hydrogène alpha.

Filter typeSHO (narrow bands)
Bandwidth7 nm
ParafocusingYes
Wavelength656nm
WeightN/A
In the boxFilter only
Special featuresNarrow-band filter, high transmittance >80%

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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