White balance

Color balance is not critical in astrophotography. I usually set the white balance to Daylight. That gives me the same color balance in all my pictures, regardless of their content.

Other settings may be of some use if your pictures have a strong color cast due to light pollution, or if the IR-blocking filter has been modified. Usually, though, color balance is something to correct when processing the pictures afterward.

Figure 3.4. High dynamic range in this picture of the globular cluster M13 was achieved by stacking four 3-minute ISO 400 exposures. Lower ISO would have helped further. Canon Digital Rebel (300D), 8-inch (20-cm) f /6.3 telescope, dark frames subtracted.

Digital Cameras For Beginners

Digital Cameras For Beginners

Although we usually tend to think of the digital camera as the best thing since sliced bread, there are both pros and cons with its use. Nothing is available on the market that does not have both a good and a bad side, but the key is to weigh the good against the bad in order to come up with the best of both worlds.

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