Coronado's single-etalon SolarMax II 60 60mm f/6.6 H-alpha Solar Telescope is calibrated for the hydrogen-alpha wavelength, and comes equipped with their RichView tuning system. This system allows direct adjustment of the primary etalon filter enabling it to be tuned up or down from the 6562.8Å wavelength for highlighting specific zones of the chromosphere and to compensate for Doppler shift that can pull prominences and other features off-band and affect views. Tuning areas of concentration back on-band, allows for higher-contrast views of prominences on the solar limb. Complementing the primary etalon filter is a rear 90° 10mm blocking filter. This secondary filter further isolates the H-alpha wavelength for better contrast and enhanced views.
The SolarMax II is offered here without a mount or tripod, but comes with a wide clamshell mounting ring that is outfitted with a 1/4"-20 socket for attachment onto many photo/video/field tripods or on piggyback rigs, or an optional Vixen-style dovetail plate is available for use with conventional alt-az, EQ, or motorized telescope mounts.
- 60mm aperture
- f/6.6 focal ratio
- 400mm focal length
- Refractor-style lens configuration
- Designed for viewing in the hydrogen-alpha wavelength (6562.8Å)
- Reveals prominences in high contrast; and under the right conditions, surface texture
- Internal primary etalon blocking filter
- Rear 5mm diagonal secondary blocking filter
- Proprietary RichView tuning system allows the internal etalon to be tuned for Doppler compensation or to highlight specific zones
- Thermal Stability: 0.005Å/°C
- 1.25" diameter barrel
- 25mm focal length yields 16x
- 52° field of view
- Fold-down rubber eyecup for use with or without eyewear
- Designed specifically for use at H-alpha wavelengths
- 20mm eye relief
- 1.25" diameter drawtube
- Helical focuser with easy-to-use focus collar
- Sol Range solar viewfinder enables safe aiming of the OTA at the Sun
- Included carrying case keeps OTA safe during transportation and storage
- Mount and tripod required
- Mounting ring allows the relative position of the OTA to the mount to be adjusted for comfort and limit obstruction
- Clamshell mounting ring with 1/4"-20 mount for using photo/video/field tripods or piggyback rigs
- Optional Vixen-style dovetail plate available for use with conventional telescope mounts