DSLR Astro Imaging
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Digital single lens reflex cameras (DSLR) were first used for astro imaging (as differentiated from photography which is terrestrial, stationary and short exposure) in 2003 with the introduction of the first sub $1000 DSLR, the Canon Rebel 300D. Second hand units only a few years old can be very inexpensive and lightly used as determined by reading the shutter actuation count in any exchangeable image file format (EXIF) header. DSLRs are such a staple commodity of any modern household that it’s a natural entryway for beginners. They also represent a self contained total imaging system convenient for field use and capable of stunning professional results when wielded by advanced users. This chapter discusses DSLR topics that are rarely, if ever, broached in other astro imaging resources.