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Location of Great Rift
[SII], Ha, [OIII] = R G B
Taken on July 5, 2004 from my backyard in Castro Valley, California
AP180EDT f/9 imaging scope used at F=1215 (f/6.75)
AP 0.75x photo/visual telecompressor
AP80/900mm guide scope
AP1200GTO mount
SBIG ST10XME imaging camera @-26C
FLI CFW1 Filter wheel
FLI DF2 Digital Focuser
ST7E guide camera @ -22C
Custom Scientific Narrowband Emission Line Filter
Sulfur II 673.4nm 3nm FWHM
Hydrogen alpha 656.3nm 3nm FWHM
Oxygen III 500.7nm 3nm FWHM
Four exposures of 600 seconds for Ha and [SII] filters, five exposures of 600 seconds for [OIII]