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Solar Analemma. This outstanding image from Alexandra Hart taken over a period of 4 years charts the midday position of the sun in the sky throughout the year. The north–south component of the analemma results from the change in the Sun's declination due to the tilt of Earth's axis of rotation. The east–west component results from the nonuniform rate of change of the Sun's right ascension, governed by combined effects of Earth's axial tilt and orbital eccentricity.

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Old Coronado BF30

this is the main message area for anything solar :)
Ohhhhhh My!
Ohhhhhh My!
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Joined: Tue Mar 04, 2014 6:13 pm

Re: Old Coronado BF30

Post by mdwmark » Sun Feb 10, 2019 2:21 am

Or not, If that is just a blocker. Then it will turn back on at 750nm in the red. KG3 is down at about 1000nm. So that area between 750 and 1000nm will be leaking energy. That will be enough to be a problem(not to good for your eye). The short side, RG630 will block anything there. If it is really a hard coated blocker it may or may not be blocked to 1000nm.
To bad you can't have it checked to see what the profile really is.
Mark W.

Almost There...
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Location: The Netherlands

Re: Old Coronado BF30

Post by bart1805 » Mon Feb 11, 2019 9:56 am

pedro wrote:
Sun Feb 10, 2019 12:34 pm
Great news, Have you tried it yet?
No, unfortunately not. It is on the long list of things to try, hope to do so in the next couple of weeks.

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