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Near IR = Red, Ha = Green, OIII = Blue
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Near IR = Red, S2 = Green, Ha = Blue
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S2 = Red, Ha = Green, OIII = Blue
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Ha = Red, OIII = Green, SII = Blue, Near IR = Luminance
Taken on July 4, 2003 from my backyard in Castro Valley, Ca.
Astro-Physics Starfire 102 f/8 imaging scope (F=812mm)
SBIG ST10XME Imaging camera @-22C
Astro-Physics 80mm Guidescope (F=900mm)
SBIG ST7E guide camera @-15C
Finger Lakes Instrumentation CFW-1 Filter wheel
Custom Scientific Narrowband Emission line filters:
Hydrogen Alpha 656.3nm /3nm passband
[Sulfur II] 673.4nm/3nm passband
[Oxygen III] 500.7nm/3nm passband
BW Optic 49mm type 93 Near IR pass filter (850nm cutoff)
Optec TCF-S robotic focuser
Maxim DL 3.10 used for image capture, processing
Sigma Beta 10 used for combining darks, biases, lights
Three shots of 20 minutes each through each filter type.
Different color assignments applied as listed above.