Pegasus Astro Green filter
The filter Pegasus Astro Green is a high-quality photographic filter designed specifically for astrophotography. Here's a detailed description of its features and technical specifications:
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%, 500-550 nm
- Polishing : 1/4 wavelength
- Coating : Anti-reflective multilayer
- Type : Band-pass filter
Features and benefits
- Optimum transmission : The Pegasus Green filter offers exceptional transmission of over 95% in the 500 to 550 nm range, corresponding to the green region of the visible spectrum.
- Infrared block : This filter is designed to effectively block infrared wavelengths, improving image sharpness and reducing thermal noise.
- Parafocality: Like all Pegasus Astro filters, the Green filter is parafocal with the other filters in the LRGB series. It is generally not necessary to refocus when changing filters.
- Superior optical quality : The 1/4-wavelength polish guarantees excellent image quality and optimum sharpness.
- Anti-reflective coating : The multi-layer anti-reflective coating eliminates halos, ghosting and unwanted reflections, improving contrast and overall image quality.
- Durability: The filter is designed to resist scratches and temperature changes, ensuring long life and consistent performance in a wide range of operating conditions.
Astrophotography applications
The filter Pegasus Astro Green is particularly useful for :
- RGB imaging : This filter is an integral part of an LRGB set for creating color composite images with monochrome cameras.
- Deep sky astrophotography : Ideal for capturing the green details of nebulae and other celestial objects.
- Reducing light pollution : The bandwidth of the Green filter is designed to block certain light pollution lines, improving color balance and separation.
- Planetary imaging : It can be used to capture specific details on certain planets, such as the bands of Jupiter or the surface features of Mars.
Conclusion
In conclusion, the filter Pegasus Astro Green is a high-quality tool for astrophotography, offering excellent transmission in the green band while blocking out unwanted wavelengths. Its optical quality, durability and compatibility with other filters make it a top choice for demanding astrophotographers seeking to capture detailed, balanced images of the deep sky.
