Musou Black Goes To Space Pt 2

This is part 2 of a series detailing how our products are contributing to space exploration!

Previously, we shared that our infrared absorption flocking fabric, "IR Flock Sheet", was utilized in the creation of a darkroom for JAXA's satellite star tracker tests. Now, further information reveals that our anti-reflection materials, "Fineshut KIWAMI" and "Musou Black Paint", are currently being used in their visible light cameras of astronomical observation telescopes!

Anti-Reflection Materials For Visible Light Cameras In Telescopes

We recently received an order for "Fineshut KIWAMI" from Professor Nagayama of Kagoshima University's Physics and Space Program. Upon inquiry, it was confirmed that the material is used in their visible light cameras of astronomical observation telescopes. Photos of the camera’s internal components were also provided, showcasing the use of both "Fineshut KIWAMI" and "Musou Black Paint" for anti-reflection purposes.

Images of the Camera Interior and Telescope Assembly

"Fineshut KIWAMI" is a well-known product among astronomy enthusiasts, previously featured by this Japanese article on Tenmon Reflexions. However, its application in a national university’s telescope camera was a new discovery for us.

Further research indicated its use in the 1m optical-infrared telescope at the Milky Way Galaxy Research Center, specifically for observing Mira variable stars and supernovae. Mira variables are pulsating stars in the final stages of their evolution, while supernovae are massive stellar explosions. Observing such faint celestial objects necessitates minimizing unwanted light, making the anti-reflection properties of "Fineshut KIWAMI" and "Musou Black Paint" highly valuable.

Professor Nagayama highlighted the superior blackness of these products compared to others and their effective application in both complex shapes and flat surfaces.

Overview of "Fineshut KIWAMI"

The "Fineshut KIWAMI" is part of the "Fineshut" series, a thin, fine-pored polyurethane sheet developed for anti-reflection in optical devices. It offers excellent optical properties and maintains high absorption in the infrared range, thanks to its textured surface. Unlike dye-based blacks, which lose absorption performance in longer wavelengths, the carbon-infused black of the "Fineshut" series ensures stable absorption from visible to infrared wavelengths. This makes it ideal for industrial cameras sensitive to near-infrared light.

Application in Telescopes and Cameras

Our anti-reflection materials have been confirmed for use in telescopes at the Milky Way Galaxy Research Center, demonstrating their effectiveness in astronomical observation equipment. These materials are also suitable for upgrading personal observation tools. "Fineshut KIWAMI" is available in three sizes through our official store and on Amazon. For even lower reflectivity, the new and upgraded model "Fineshut KIWAMI XX" is recommended.

Conclusion

From "IR Flock Sheet" used in star tracker darkrooms to "Fineshut KIWAMI" and "Musou Black Paint" in telescope cameras, our products are steadily advancing toward space applications. There is a growing anticipation of seeing these materials used in rockets and satellites. Stay tuned for future blogs!