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How solar filters work
Here are some useful articles to show how solar filters work
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Hits
1
An Introduction to air-spaced Etalons
Part 1: An Introduction to Air Spaced Etalons and Solar Telescope Technology
by Colin Kaminski
4839
2
Resonant Spaces Part 2
Resonant Spaces - Part 2: An Introduction to Solid Spaced Etalons and Solar Telescope Technology
by Colin Kaminsk
6113
3
Experiment in double stacking
Bob from Cloudy Nights forum posted this on his double-stacking Coronado SM 90 experiment
4113
4
Double stacking
Here is Bob Yoesle's excellent piece on double stacking Ha front ethalon units
4384
5
Single v Double-stacking
Here is an excellent Cloudy Nights forum thread discussing the differences between single and double stacking H-alpha telescopes
3716
6
How a solar wedge works
Here are some diagrams as to how the solar wedge works
3503
7
Lunt Solar Wedge from the inside out
Here Mark Townley dismantles a Lunt Solar Wedge.
2959
8
Spectrohelioscope
Here is a CN thread on spectrohelioscopes
3506
9
Why nightime H-alpha filters do not work for white light
Here is a superb explanation as to why it is not possible to use a night time hydrogen-alpha filter for solar work by Bob Yeosle
2942
10
CaK system designs
Here is an extremely interesting thread on the CN forum showing how Cak filtration systems work.
3459
11
Optical filter construction
Here is an excellent document describing the difference between hard and soft solar filer coatings.
2400
12
Photomertic properties of commercial halpha filters
Here is an excellent paper discussing the photometric properties of commercial H alpha filters
2228
13
Analysis of F-P Ha Filters
Here is an excellent analysis of the F-P etalon by Christian Valadrich
1808
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