Constellation Orion
and Barnard's Loop
(Mouse over image for labels)
Orion is the most familiar of the winter constellations and perhaps of all the constellations. Barnard's Loop is much less familiar because this dim mass of faintly fluorescing hydrogen gas is not visible to the eye. Long exposure photographs show it distinctly, especially if the film used is particularly sensitive to the long (656.3 nm) wavelength light. As soon as I have the opportunity, I will add two exposures on Kodak Ektachrome E200 to this image.
| Date | 2003-01-05 |
| Optics |
Nikkor 50 mm lens at f/4.0 on a Nikon F100 camera piggybacked on an Astro-Physics refractor with ST-10XME CCD camera A-P 1200 GTO mount. Guided with the internal ST-10 guide chip. |
| Exposure |
Two 15 minute exposures on Fuji Provia F400 film, pushed 1 stop. No filters. |
| Processing |
Scanned on a Polaroid SS35+. Images registered and combined (averaged) in RegiStar. Gradients reduced in MaxIm DL/CCD. Levels and curves adjusted in Photoshop 7. Grain reduced with SGBNR. |