📁 异常声音

About "hums" and another anomalous sounds and noises.

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Collected Data and Links on Low Light CCD Cameras

http://www.nitehawk.com/rasmit/low_light.html

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Geoff's Photography

http://www.users.on.net/~simsg/astro/

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Chuck's Astrophoto Page

http://astrophotography.aa6g.org/

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Astronomy and Astrophotography

http://astronomy16.tripod.com/

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Astroargazkigintza

http://astrosurf.com/ilizaso/

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Rees, Martin

http://www.ast.cam.ac.uk/~mjr/

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Precision Planting

http://precisionplanting.com/

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