View single post by amazing50 | ||||||||||
Posted: Sat Dec 19th, 2015 12:24 |
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amazing50
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Robert Wrote:JK, do you know how Nikon cameras cope with 'bulb' exposures of greater than one hour? Long exposures build up noise, astro cameras have various cooling devices to reduce noise on long exposures like liquid nitrogen. There are programs to combine time lapse sequences into a nice trail pix on the astronomy sites. Sony has an App fro the R7xxx cameras that builds up movement of point light sources.
____________________ There is nothing worse than a sharp image of a fuzzy concept ;~) Mike Grace |
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