Abstract
If the purpose of a trip away from city lights is to find lots of deep-sky treasures and then see detail within them, your eyes must be dark-adapted and stay that way. Using a white-light flashlight will prevent that process. Make certain that you use only red light to read star charts and write notes. I have found that it is easier to read by the light of a red light-emitting diode (LED). The pure red light doesn’t seem to affect my night vision as much as a white flashlight with a red filter. Several manufacturers of astronomical equipment now have red LED flashlights available. They are somewhat expensive for what you get (an LED costs a few cents), but worth it nonetheless (See Fig. 5.1).
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Coe, S.R. (2016). What Other Accessories Are Useful?. In: Deep Sky Observing. The Patrick Moore Practical Astronomy Series. Springer, Cham. https://doi.org/10.1007/978-3-319-22530-2_5
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DOI: https://doi.org/10.1007/978-3-319-22530-2_5
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-22529-6
Online ISBN: 978-3-319-22530-2
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