닫기 oronado has developed a series of telescopes as a result of the often asked question, “What is the best telescope to use with a Coronado filter?”

While almost all refractors and most reflecting telescopes can be used with a Coronado filter, no other telescope has been designed with all its optical aberrations and coatings optimised at H-Alpha. Most nighttime telscopes, when used at H-alpha, will not have the image contrast exhibited by a SolarMax nor the image quality. Most broadband coatings, used on such telescopes, will have reduced effectiveness at this wavelength and telescopes (particularly reflectors) not specifically designed for Solar viewing, will exhibit unnecesary scattering and spurious light transmission. All of the Coronado scopes, even the PST, have been designed with this one wavelength of light in mind and will increase contrast and give you a darker background for viewing and imaging.

“Why buy a telescope that can only look at one object?”

The Sun in H-A is the most dynamic object you will ever see while pointing a telescope skywards. Constantly changing and never repeating itself the Sun through a Coronado filter will hold your attention for a lifetime. Our telescopes serve to enhance that view for you, your family, and friends. The telescopes provide an easy and portable set up that is always ready right out of the box.

The SolarMax 40 has the same aperture as the P.S.T. but is distinguished by several key factors. The SolarMax 40 comes standard with a < 0.7angstrom bandpass which results in increased surface detail across the disk. A T-Max attached directly behind the etalon gives you the ability to adjust for Doppler shifted light. Bino-viewers and most imaging equipment will come to focus, sometimes with the use of a Barlow or OCS. These features plus enhanced surface detail make the SolarMax 40 a more versatile instrument with remarkable solar images.

With the SolarMax 40 you will see all of the limb detail of the P.S.T. but with enhanced surface features. The SolarMax 40 comes standard with a BF5 blocking filter but a BF10 version is also available and recommended for use with imaging equipment and bino-viewers. The larger blocking filter allows you to extend the focal length without vignetting but does not enhance detail or lower the bandpass. You can also purchase a second SolarMax 40 / T-Max filter, along with a small adaptor plate, and attach these to the front in order to lower the bandpass to < 0.5 angstroms. This is called ‘double stacking’ and further enhances surface detail.

>>> Coronado - SolarMax 40 - 40mm f/10 OTA Only
The SolarMax 40 OTA - for those who already own a SolarMax 40 filter.
The OTA comes with clamshell mounting rings.
Narrowband filter not included in this package.

>>> Coronado - SolarMax 40 - 40mm f/10 <0.7A H-Alpha Telescope with BF10
The SolarMax 40 has the same aperture as the PST, but with a bandpass of <0.7A, yields greater detail and resolution.
Double-stacking is possible with addition of SolarMax 40 filter.
This model comes with larger blocking filter (BF10).
Easy to mount on photo tripod, etc.
Comes with mounting rings and case.

>>> SolarMax 40 - 40mm f/10 <0.5A H-Alpha Telescope with BF10
This SolarMax 40 is a deluxe \'double-stacked\' 40mm dedicated solar telescope with a bandwidth of <0.5A.
This bandwidth provides images of enhanced contrast.
Easy to mount on photo tripod, etc.
Comes with mounting rings and case.