SKYWATCHER HELIOSTAR 100Hα SOLAR TELESCOPE

The Sky-Watcher Heliostar 100Ha is a Hydrogen-alpha solar telescope with a half bandwidth of <0.5Å, perfect for viewing and imaging prominences. 

Multiple safety features are incorporated into the design including front mounted ERF that effectively reflects infrared wavelengths, keeping the optics cool and reducing internal thermal currents. An internal UV-cut filter prevents these damaging wavelengths from reaching the observer's eye.

The pressure-tuned etalon passes H-alpha light at a bandpass of less than 0.5 Ångstrom at 656.28nm, showing exceptional detail without the need for a costly second etalon as found in some competing "double-stacked" solar scopes. While the Heliostar is optimized for viewing and imaging prominences, you will still see a remarkable amount of detail on the chromosphere.

Unlike the smaller Heliostar 76Ha, the Heliostar 100Ha has a large rack & pinion focuser, providing exceptional smoothness.

Features

• Pressure-tuned internal etalon
• Large 19mm blocking filter
• Built-in energy rejection filters
• Solar Zenith Prism and 22mm 70° wide eyepiece diagonal
• Built-in Solar finder
• Focal length: 800mm
• Diameter: 100mm
• Focal ratio: f/8
• Dual-speed Rack & Pinion focuser
  
• Tube weight: 6kg
  

Note: The Heliostar can only be used with its specific included diagonal, as this houses the important blocking filter. This diagonal is removable, but you must not look through the scope without it, otherwise irreversible eye damage will occur!

Specifications