Lunt B600 blocking filter: Solar observation in H-alpha light
The Lunt B600 blocking filter, integrated into a 2" format straight tube, is an essential component for observing the Sun in H-alpha light. Designed to guarantee total safety and exceptional image quality, this filter is specifically optimized to isolate the Hydrogen Alpha spectral line (656.28 nm). Thanks to its 6 mm diameter, it offers a field of view suitable for telescopes equipped with 2" eyepiece holders and focal lengths up to 540 mm. This straight-tube model is particularly appreciated for use in solar imaging or with configurations requiring a shorter optical path.
What is the purpose of a blocking filter?
A blocking filter is indispensable in any H-alpha solar system. Whereas the Fabry-Perot standard isolates a narrow band around the H-alpha line, the blocking filter acts as a "spectral cleaner". It eliminates stray wavelengths and unwanted harmonics, ensuring that only light centered on 656.28 nm reaches the eyepiece or camera.
The B600 model, with its 6 mm diameter, is designed for moderate focal length telescopes. Its straight-tube design allows optimum compatibility with astrophotographic cameras and accessories requiring a reduced optical path, while offering exceptional image quality.
Key features
- Blocking filter diameter : 6 mm (B600), optimized for focal lengths up to 540 mm.
- Straight tube : 2" format, ideal for configurations requiring a short optical path.
- Multiple connections :
- 2" inlet for eyepiece holder.
- 1.25" outlet with integrated T2 thread for camera or eyepiece.
- Maximum safety : Complies with international standards for safe solar observation.
- Spectral optimization : Eliminates unwanted harmonics to isolate exclusively the H-alpha line (656.28 nm).
- Robust construction: Machined aluminum case with high-precision optical components.
Why choose the Lunt B600 blocking filter in straight tube?
- Optimized visual observation and imaging : The B600 offers a field of view suitable for observing the complete solar disk, and is also suitable for small to medium-sized sensors.
- Compact, versatile design: The straight tube format is ideal for configurations where the optical path must be reduced, as in astrophotography.
- Outstanding image quality : Thanks to its multi-layer system, it guarantees sharp, high-contrast images without light interference.
- Absolute safety : Effectively blocks harmful UV and IR radiation, ensuring safe use for your eyes and equipment.
- Universal compatibility : Works with all Lunt solar telescopes equipped with a 2" eyepiece holder.
Recommended applications
- Visual observation of the Sun in H-alpha : Explore solar prominences, filaments and chromospheric granulation with optimum contrast.
- Advanced solar astrophotography : Compatible with modern cameras thanks to integrated T2 thread.
- Ideal for focal lengths up to 540 mm, on compact or intermediate instruments.
Included in the package
- Lunt B600 blocking filter integrated into a 2" straight tube.
- Adapter for 1.25" eyepieces.
- Detailed user manual.
Compatibility
The B600 blocking filter is designed for use with :
- Lunt solar telescopes such as the LS40THa or LS50THa.
- Standard 1.25" eyepieces.
- Modern astrophotographic cameras with T2 threads.
Important
The B600 blocking filter must be used exclusively with a solar telescope equipped with an H-alpha standard. It cannot be used alone or as an independent accessory on an instrument not dedicated to solar observation.
Transform your solar viewing experience with the Lunt B600 blocking filter in a 2" straight tube. Treat yourself to a safe, clear view of the Sun in H-alpha light as you explore its fascinating structures!
