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Title: Street Light Spectra
Post by: Whitters on Feb 05, 2006, 21:21:14

Low Pressure Sodium,
(http://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/Canon_G6_Images/Spectra/LowPressureSodium.jpg)

The low pressure Sodium has gaps in the far green and blue end, the red is a also a little fainter.

High pressure Sodum
(http://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/Canon_G6_Images/Spectra/HighPressureSodium.jpg)

The High pressure lamps are a continum but not so bright in the green and blue as the yellow and red.

Canon G6 full telephoto and Cookin diffractor Cosmos B filter (40)

Title: Street Light Spectra
Post by: Rocket Pooch on Feb 05, 2006, 21:45:23

will that diffractor work with a CCD?

Title: Street Light Spectra
Post by: Whitters on Feb 05, 2006, 21:46:46

Yes it will, it it mounting it in the light path that is tricky.

Title: Street Light Spectra
Post by: Rocket Pooch on Feb 06, 2006, 12:06:49

Quick thought paul, can we do some testing and put the neodium and skyglow filters in front of that to see how effective the filters are, also where did you get the filter from?

Title: Street Light Spectra
Post by: Oscar the Cat on Feb 06, 2006, 15:56:59

Any camera shop should sell them. I have had mine for years should have had a go with it before now.

Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Whitters on Feb 05, 2006, 21:21:14