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Hydrogen Alpha only
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Ha = Red
[OIII] = Green, Blue
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Ha = Red
[OIII] = Green
[SII] = Blue
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[SII] = Red
Ha = Green
[OIII] = Blue
Taken on August 7, 2003 from my backyard in Castro Valley, Ca.
Celestron C14 Imaging Scope @3910mm focal length (f/11)
Finger Lakes IMG1024S Imaging camera @-34C
RCOS Dichroic Beam Splitter for AO7/IMG compatibility
SBIG ST10XME guide camera
SBIG AO7 Adaptive Optics system
FInger Lakes CFW1 Filter Wheel
Custom Scientific Emission Line filters:
Hydrogen Alpha 656.3nm 3nm FWHM
Oxygen III 500.7nm 3nm FWHM
Sulfur II 673.4nm 3nm FWHM
Three exposures of 20 minutes (Ha, [OIII]), two exposures of 20 minutes ([SII]).