Textbook content produced by OpenStax is licensed under a Creative Commons Attribution License. We recommend using aĪuthors: Andrew Fraknoi, David Morrison, Sidney Wolff Use the information below to generate a citation. Then you must include on every digital page view the following attribution: If you are redistributing all or part of this book in a digital format, Then you must include on every physical page the following attribution: If you are redistributing all or part of this book in a print format, Want to cite, share, or modify this book? This book uses the Fred Espenak’s Year by Year Tables of Events: Astronomy Magazine’s The Sky This Week: For millennia, astronomers have solved this problem by measuring apparent sizes.Sky & Telescope’s This Week’s Sky at a Glance:.Sea and Sky: (click on the fourth menu button).The following resources offer calendars of night sky events. Dennis Schatz’s AstroAdventures Star Finder:.Or you can construct your own from templates at these two websites: You can buy them at science supply and telescope stores or online. A planisphere is a sky chart that turns inside a round frame and can show you the night sky at your latitude on any date and time of the year.If you have a smartphone, you can find a variety of inexpensive apps that allow you to simply hold your phone upward to see what is in the sky behind your phone. Appendix B provides a section of information for finding astronomy apps for cell phones and tablets.
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