Opiniones Telescopio Solar Coronado SolarMax III 70/400 0.7Å BF15 OTA

Single External H-Alpha Etalon, Patented Rich - View Etalon Tuning, Reveals Prominences in High Contrast, 400mm f/5.7 Solar Viewing Refractor, 15mm Rear Diagonal Blocking Filter, <0.7Å Hydrogen-Alpha Wavelength, 2-Speed 2'' Rack-and-Pinion Focuser, Vixen-Style Dovetail Mounting Plate, Solar Finder, 18mm 22x Eyepiece, Easily Convert for Nighttime Use Redesigned with a new external 60mm solar etalon filter and an upgraded 2-speed 2 rack-and-pinion focuser Coronado's single-etalon SolarMax III 70mm f/5.7 H-alpha Solar Telescope builds on the success of their earlier iterations to provide users with a compact yet capable solar viewing optic. With the primary etalon now positioned externally users can simply and easily remove the front solar and rear blocking filters to convert the SolarMax III into a competent nighttime viewing telescope - greatly increasing the scope's versatility. - Specifically calibrated to isolate the hydrogen-alpha wavelength with a less than 0.7Å bandpass for observing prominences in high contrast against the black backdrop of space the primary etalon comes equipped with their Rich - View tuning system to improve contrast and enhance views when atmospheric interference or Doppler-shift require you to bring the etalon back on-band. Directly adjusting the etalon enables it to be tuned up or down from the 6562.8Å H-a wavelength to reveal prominence details and compensate for various factors that can pull the prominences and other features off-band and affect views. - The SolarMax III gets an updated focusing system versus the earlier iteration with a 2 10:1 dual-speed rack-and-pinion system from the previous 1.25 helical one. When used as a conventional scope larger 2 conventional eyepieces and accessories can be used or the more common 1.25 size with the addition of the included 1.25 reducer adapter. The more precise focuser is complemented by a rear 90? 15mm blocking filter to provide a wider field of view and allows for full-disk viewing even with higher magnification eyepieces. This secondary blocking filter is used to further isolate the H-alpha wavelength for improved contrast on surface granulation and prominence detail. A larger blocking filter also enables the use of eyepieces with greater field-stop diameters to be used without vignetting occurring as might occur with smaller-aperture blocking filters. - To get users started Coronado includes a 2-to-1.25 reducer adapter and an 18mm 1.25 CEMAX eyepiece that produces a 22x power. The eyepiece holder and blocking filter will accept any 2 solar eyepiece or accessory and with the reducer adapter any 1.25 eyepiece can also be used — further increasing the scope versatility. The optical tube assembly is offered here without a mount or tripod but comes with a Vixen-style dovetail plate for users who already have a reliable and stable mount and support system. To protect the OTA and accessories during transport and storage Coronado includes a hard carrying case with custom-cut foam lining that is color-matched to the OTA in their elegant Black and Gold color scheme.