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.
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Compared to film cameras, digital cameras are easy to use, fun and extremely versatile. Every day there’s more features being designed. Whether you have the cheapest model or a high end model, digital cameras can do an endless number of things. Let’s look at how to get the most out of your digital camera.