Photo Sensor
A look at what is currently available on eBay
 Opto Sensor Light EE-SX673 Photo Micro Switch Control US $9.16 
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 Light Sensor NPN EE-SX674 Photo Micro Switch Control US $11.21
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 Diffused Reflection EE-SPY312 Photo Micro Sensor Switch US $11.72
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 EE-SX674 NPN Photo Micro Sensor Photoelectric Switch US $11.63
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 25/64" Slot PCB Photo Interrupter Sensor HY810A 10 Pcs US $8.61
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 10 Pcs 1/6" Slot PCB Photo Interrupter Sensor HY301-21 US $10.14
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 T Type Light EE-SX672A NPN Photo Micro Sensor Switch US $11.14
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 5/32" Slot PCB Photo Interrupter Sensor HY301-19 10 Pcs US $10.11
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 Opto Sensor Light EE-SPY412 Photo Micro Switch Control US $12.54
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 NIB Tritronics, Markeye, MEWLC, photosensor US $60.00
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 10 Pcs 1/8" Slot PCB Photo Interrupter Sensor HY860C US $6.97
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 Standard NPN EE-SX670A Photo Micro Sensor Photo Switch US $14.03
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 2pcs BANNER 17632 PHOTO ELECTRIC SENSOR NEW US $20.00
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 MICRO SWITCH FEMLS-5EB PHOTO ELECTRIC SENSOR NIB US $20.00
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 balluff photo pass though sensor switch US $10.00
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Would it be feasible to create a large photo sensor panel for a light gathering telescope?
I've been thinking about how costly it is to manufacture the large mirrors used in optical telescopes and whether or not it would be feasible to have instead a large panel of photo sensors similar but != the sensor in a digital camera. I know it sounds silly, but there must be a better way than just building bigger and bigger mirrors to get a better picture of the universe. What could be some alternatives?
A larger photo sensor would, indeed, be cool...
Remember, though, that a telescope's light- gathering power doesn't come from it's sensors, it comes from it's aperture!
The photo sensors don't have to be large, they just need to be fine enough (i.e. more mega- or giga- pixels) to deliver the spectacular images we have all come to expect.
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February 16th, 2006 in
Uncategorized | tags: camera, cleaning, digital, photo, photo sensor, photo sensor array, photo sensor circuit, photo sensor outdoor light, photo sensor sizes, photo sensor switch, photo sensor wiring, photo sensors, photography, sensor