Coronado - SolarMax 90 Ha Filter with BF30 and TMax Tuner

$ 6045.00

SM90_30

Coronado - SolarMax 90 Ha Filter with BF30 and TMax Tuner

Like the smaller 60mm filter the SolarMax 90 can be used on almost any telescope design under 3000mm focal
length. However, the larger 90mm aperture increases resolution and allows for the user to view individual
sections of solar activity at high magnification and when viewing at full disk the user gets the impression of
curvature on the surface. The extra resolution will provide some stunning views; you haven't seen the sun
until you have looked 'down' through a filament onto an active region. The SolarMax 90 provides consistent and
breathtaking H-Alpha views.
All SolarMax series filters are sold in sets. The front mounted SolarMax and rear blocking filter. Almost all telescopes will
require an adaptor plate in order to attach the SolarMax, these are available from Coronado or through your dealer. The SolarMax
includes a T-Max de-tuning filter. Some events on the Sun,- notably active flares and coronal mass ejections (CME), are extremely
fast moving. If such features occur on the disc of the Sun, their high velocity towards the observer results in their wavelength
being Doppler shifted shorter than Ha. If the velocity is high enough, this wavelength could be outside the passband of the filter
and the feature would not be observable. The T-Max allows the user to de-tune the SolarMax slightly to bring such phenomena into
better visibility.

SolarMax 90 can also be paired with a second SolarMax 90, second T-Max and an interface adaptor. This will reduce the bandwidth
of the 90mm filter system to <0.5A and will greatly increase the contrast of the image. This addition is priced at $4,625.00. Be
aware this creates a very top heavy set up and we recommend the use of a Coronado internal module to narrow the bandwidth instead
of double stacking two 90mm filters. We recommend this configuration with the Coronado MaxScope due to the optimal design of this
telescope allowing effective use of a double filter system. We make the internal module for a range of popular telescopes and will
provide that information on request. Installing a module is not a permanent alteration to your host telescope. Not all SolarMax
filters will match in this configuration and it is recommended that you send your filter to Coronado to have this work done.
	
Coronado will not guarantee the performance, safety, or honor the warranty of any telescope being used with a non-Coronado
adaptor plate
	
Product Specifications

Aperture: 90mm
F/L: N/A
F/Ratio: N/A
Bandwidth: <0.7Å - <0.5Å
Thermal Stability: 0.005 Å/C
Blocking: Full blocking >105 from EUV to far IR

	

90mm aperture narrowband Ha filter with TMax tuner and 30 mm blocking filter. Maximized for telescopes under 3000mm FL<.7A
bandwidth.