Pegasus Astro Red Filter
The filter Red Pegasus Astro is a high-quality photographic filter designed for astrophotography, offering the following 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)
- Glass thickness : 2 mm
- Transmission range : Tave > 95%, 600-680 nm
- Polishing : 1/4 wavelength
- Coating : Anti-reflective multilayer
Features and benefits
- Optimum transmission : The Red Pegasus filter offers exceptional transmission of over 95% in the 600 to 680 nm range.
- Infrared block : This filter is designed to effectively block infrared wavelengths, improving image sharpness.
- Parafocality: Like all Pegasus Astro filters, the Red filter is parafocal, which means it's generally not necessary to refocus when changing filters.
- Superior optical quality : With 1/4 wavelength polishing, this filter guarantees excellent image quality and optimum sharpness.
- Anti-reflective coating : The multi-layer anti-reflective coating eliminates halos, ghosting and unwanted reflections.
- Durability: The filter is designed to withstand scratches and temperature changes.
Astrophotography applications
The filter Pegasus Red is particularly useful for :
- Planetary imaging : It offers high contrast for observing and photographing planets.
- Deep sky astrophotography : Ideal for capturing the red details of nebulae and other celestial objects.
- RGB imaging : This filter is an integral part of an LRGB set for creating color composite images with monochrome cameras.
- Reducing light pollution : The bandwidth of the Red filter is designed to block the sodium light pollution line at 589 nm, improving color balance and separation.
Conclusion
In conclusion, the filter Red Pegasus Astro is a high-quality tool for astrophotography, offering excellent transmission in the red band while blocking out unwanted wavelengths. Its optical quality, durability and compatibility with other filters make it a first-rate choice for demanding astrophotographers.
