Antlia Solar Discover energy protection filter with cell - free opening 200 mm

Antlia energy protection filters for solar observation and solar photography

The filter is placed in front of the telescope and thus prevents infrared heat radiation from penetrating the inside of the telescope. This prevents heating with all its consequences. The seeing improves dramatically and contrast filters, such as H-alpha or calcium, can also be used with larger telescopes.

The filter transmission

The ERF has two transmission ranges, on the one hand H-alpha around 656.3 nm and on the other hand a window around CaK (393 nm) and CaH (396.8 nm). This allows the important light ranges for solar observation and photography to pass through. Other areas and in particular the IR light are reflected.

Attaching to the telescope

Especially when observing the sun, it is important that the energy protection filter does not come off. That is why this filter is held in a high-quality temperature-compensated cell. The cell is fixed to the telescope with a total of six knurled screws. The screws are provided with a plastic tip to prevent scratches on the telescope.

Safety informations: PDF Download