Coronado SolarMax 90 Telescope

This SolarMax 90 Telescope from Coronado is a dedicated dual etalon H-Alpha solar viewing telescope with doublestacked 90 mm SolarMax filters, two T-Max 90 tuners a BF-30 blocking filter, and a full CEMAX eyepiece set. The SolarMax 90 features a <0.7 Å solar-viewing system that will provide detailed views of plage, flares, filaments, prominences, and granulation. In comparison to the SolarMax 90 0.7 Å, this scope will produce enhanced contrast on subtle features within the active areas of the solar disk, along with a marginal reduction in detail in the disk-edge prominences. This scope's second external filter is fitted with a matching T-Max tuning unit - this affords the viewer a substantial advantage when fine-tuning the optical system.

The heart of the SolarMax 90's viewing system are the SolarMax 90 filters and their matching T-Max 90 Doppler Tuning Units. 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 90 allows these phenomena to become more visible.

All SolarMax filters must be used with a secondary interference filter. This package includes the BF-30 blocking filter - a 2.0" straight-through that produces a 27.2 mm image. The BF-30 is thermally stable, so the image will not drift off the H-Alpha line as it heats up during use. Its 30 mm aperture offers full disk views of the Sun, and the ability to use digital imaging systems with large sensors, most Barlow lenses, and 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.