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Re: Ca PST Started by Tom Rowland at 09-21-2005 9:48 AM. Topic has 2 replies. TAS Community S... » General » General Informa... » Re: Ca PST

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09-21-2005, 9:48 AM Tom Rowland Joined on 09-12-2005 Posts 70 Ca PST Here is the link http://www.coronadofilters.com/index.shtml This thing is suppose to be available starting Nov. 2005.  I am saving my pennies.    Report

09-21-2005, 3:38 PM Starboy Joined on 05-22-2005 Tallahassee, FL Posts 150 Re: Ca PST What is it? When men are callin one another names and makin faces and everything is a jangle and ajar I contemplate on interstellar spaces and gaze upon a star - Mark Twain [with a slight change by Starboy]    Report

09-26-2005, 5:43 PM Tom Rowland Joined on 09-12-2005 Posts 70 Re: Ca PST Hi Gene, In the same way the clubs PST only allows light close to the Hydrogen Alpah wave lengths to pass to the EP a CA filter only allows light emitted by ionized calcium to pass to the EP.  In general this narrower bandwidth is interesting for viewing structure on the suns surface.  Specifically plague areas are much better view in this wave length.  Here are a couple of additional links.  About half way down the page of the first one is a compairson of a standard white light filter and a CaK filter http://www.telescope-service.de/baader/solar/solar.html#SolarContinuum http://www.company7.com/daystar/products.html#calciumK    Report

TAS Community S... » General » General Informa... » Re: Ca PST

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