This SolarMax 40 Telescope from Coronado is a dedicated H-Alpha solar viewing telescope with a 40mm SolarMax filter, a T-Max 40 tuner, and a BF-10 blocking filter. The SolarMax 40 features a <0.7 Å solar-viewing system that will provide detailed views of plage, flares, filaments, prominences, and granulation.
The heart of the SolarMax 40's viewing system is the SolarMax 40 filter and its matching T-Max 40 Doppler Tuning Unit. This combination can be selectively adjusted by the viewer to de-tune the telescope's optical system. The wavelengths produced by high-velocity events such as active flares and coronal mass ejections (CME) can Doppler-shift and become invisible to a fixed H-Alpha system. The slight adjustment range made possible by the T-Max 40 allows these phenomena to become more visible.
All SolarMax filters must be used with a secondary interference filter. This package includes the BF-10 blocking filter - a 1.25" right-angle diagonal that produces a 9.0mm image. The BF-10 is thermally stable, so the image will not drift off the H-Alpha line as it heats up during use. Its 10mm aperture is matched to the telescope's focal length for full disk views of the Sun. This large aperture also enables the use of most Barlow lenses - this simplifies digital photography and enables the use of binoviewers.
SolarMax telescopes produce outstanding views of the Sun's active surface with 100% safety. None of the parts in this kit are stand-alone units - each component is equally crucial to the user's safety and the system's performance.