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Coronado's iconic PST 40mm f/10 1.0Å H-Alpha Personal Solar Telescope optical system is tuned to the hydrogen-alpha bandwidth with a broad 1Å (Angstrom) bandpass for viewing details of the Sun's chromosphere (surface) and prominences, as well as filaments. A bandpass tuner allows users to compensate for Doppler shift or to highlight specific areas or zones.
It is designed and engineered to be set up quickly and used easily. For simplicity, the 30mm etalon and rear blocking filters are set internally, so all users need do is mount the OTA on a stable platform and drop in the included 20mm eyepiece. The PST is offered here without a mount or tripod, but it is equipped with a standard 1/4"-20 tripod mount for using conventional photo/video/field tripods, or it can be mounted on many alt-az, EQ, or motorized astronomical mounts.
f/10 focal ratio
400mm focal length
Simple focusing ring with 1.25" eyepiece holder
Eyepiece set at 90° to optical tube puts head in a comfortable viewing position when aimed at or near the zenith
30mm internal tunable etalon
Built-in blocking filter
Tuning ring allows for Doppler compensation to improve contrast and highlight specific areas/zones
Tuned for the hydrogen-alpha bandwidth with improved contrast for viewing prominences, filaments, and surface details
1.25" diameter barrel
20mm focal length yields 20x magnification
Fold-down rubber eyecup for use with or without eyewear
Mount and tripod required
1/4"-20 mount for using conventional photo, video, or field tripod
In the Box
Coronado 40mm f/10 1.0Å H-Alpha Personal Solar Telescope (OTA Only)