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So What Film?
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Daniel Johnson on July 2, 2003 23:32:59 UTC |
If one goes with film, the choice of a specific film is crucial. Many fine choices are available if all you want is star fields, but if you want the glorious reds of hydrogen-emission nebulae (think North America Nebula, Orion Nebula, Lagoon Nebula), the field is narrow. The human eye has relatively poor sensitivity to the very deep red of the H-alpha wavelength, and most films are understandably made to mimic the sensitivity of the eye. The result is that many films just won't show those nebulae at all.
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