NGC7000 North America Nebula "Gulf Region" imaged in Hydrogen Alpha and Oxygen III

Click on image to enlarge. Click here for highest resolution

 

Fixed light gradient, click image to enlarge. Click here for highest resolution

Taken on July 13, 2003 from my backyard in Castro Valley, Ca under a near-full moon

Astro-Physics Traveler f/6 with Astro-Physics 0.75X Telecompressor (F=457.5mm total, f/4.5)

SBIG ST10XME Imaging Camera at -22deg C

Astro-Physics 80mm Guidescope (F=900mm)

SBIG ST7E guide camera

Finger Lakes Instrumentation DF2 Digital Focuser

Finger Lakes Instrumentation CFW1 Filter Wheel

Custom Scientific Narrowband AR-coated emission line filters

    Hydrogen Alpha:   656.3nm / 3nm FWHM

    Oxygen III:               500.7nm / 3nm FWHM

Three exposures of 30 minutes each through Ha and OIII. Combined as Ha = Red, OIII = Green, OIII = Blue

Component shots:

Halpha: click picture to enlarge, Click here for highest resolution

OIII: click picture to enlarge, Click here for highest resolution

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