Shooting Hydrogen Alpha with a Hutech Modified Digital Rebel
Kodak recently announced that it has discontinued production of its wonderful Technical Pan Film. This film was exceptional when hypered and shot through a hydrogen-alpha filter. Can the modified Digital Rebel come close to its performance?
Note: The digital images were taken through an Orion 80ED scope and a Lumicon Hydrogen Alpha filter on 12/20/04. The moon was just under 10 days old and was approximately 70% full when these were taken!
This is a combination of 10 X 300s (a total of 50
minutes) exposures through a Lumicon Hydrogen Alpha filter.
|The same image converted to grayscale in ImagesPlus based on a method explained by
The image was curves adjusted to try to match it with a Tech Pan image of the same object.
Compare this image with the one below taken through a scope of the same focal length (an Orion 120 ST).
It was shot through a red 25a filter and has a slight noise reduction filter applied.
It is a single 2 hour exposure compared with a total of 50 minutes in the digital image above.
Also note that the moon was only 1/4 full when the film image was taken.
|NOTE: This is not meant to be a scientific test. The film image
has everything going for it...
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