﻿ Astronomy Picture of the Day [1]Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2022 October 10 [2]The featured image shows a broad landscape in Turkey with many images of the Moon in different phases tracing out doubled figure eight on the sky. Please see the explanation for more detailed information. A Double Lunar Analemma over Turkey Image Credit & Copyright: [3]Betul Turksoy Explanation: An [4]analemma is that [5]figure-8 curve you get when you mark the position of the Sun at the same time each day for one year. But the trick to imaging an [6]analemma of the Moon is to wait bit longer. On average the [7]Moon returns to the same position in the sky about 50 minutes and 29 seconds later each day. So [8]photograph the Moon 50 minutes 29 seconds later on successive days. Over one lunation or lunar month it will trace out an analemma-like curve as the Moon's actual position wanders due to [9]its tilted and [10]elliptical orbit. Since the [11]featured image was taken over two months, it actually shows a double lunar analemma. Crescent [12]lunar phases too thin and faint to capture around the [13]New moon [14]are missing. The two months the persistent astrophotographer chose were during a good stretch of weather during July and August, and the location was [15]Kayseri, [16]Turkey Tomorrow's picture: open space __________________________________________________________________ [17]< | [18]Archive | [19]Submissions | [20]Index | [21]Search | [22]Calendar | [23]RSS | [24]Education | [25]About APOD | [26]Discuss | [27]> __________________________________________________________________ Authors & editors: [28]Robert Nemiroff ([29]MTU) & [30]Jerry Bonnell ([31]UMCP) NASA Official: Phillip Newman [32]Specific rights apply. [33]NASA Web Privacy Policy and Important Notices A service of: [34]ASD at [35]NASA / [36]GSFC, [37]NASA Science Activation & [38]Michigan Tech. U. References 1. https://apod.nasa.gov/apod/archivepix.html 2. https://apod.nasa.gov/apod/image/2210/LunarAnalemma_Turksoy_6755.jpg 3. https://www.instagram.com/betul_turksoy/ 4. https://youtu.be/Deli5COMJhs 5. https://apod.nasa.gov/apod/ap160822.html 6. https://apod.nasa.gov/apod/ap050713.html 7. https://solarsystem.nasa.gov/moons/earths-moon/lunar-phases-and-eclipses/ 8. https://apod.nasa.gov/apod/ap220612.html 9. https://www.fourmilab.ch/earthview/moon_ap_per.html 10. https://www.mathsisfun.com/geometry/ellipse.html 11. https://www.instagram.com/p/CjJQoBlMIUN/ 12. https://solarsystem.nasa.gov/resources/676/phases-of-the-moon/ 13. https://spaceplace.nasa.gov/review/all-about-the-moon/moon_phases.en.jpg 14. https://cdn.abcotvs.com/dip/images/831727_070615-cc-Sad-Cat-Thumb.jpg?w=800 15. https://youtu.be/amaLtD5ON1Q 16. https://en.wikipedia.org/wiki/Turkey 17. https://apod.nasa.gov/apod/ap221009.html 18. https://apod.nasa.gov/apod/archivepix.html 19. https://apod.nasa.gov/apod/lib/apsubmit2015.html 20. https://apod.nasa.gov/apod/lib/aptree.html 21. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search 22. https://apod.nasa.gov/apod/calendar/allyears.html 23. https://apod.nasa.gov/apod.rss 24. https://apod.nasa.gov/apod/lib/edlinks.html 25. https://apod.nasa.gov/apod/lib/about_apod.html 26. http://asterisk.apod.com/discuss_apod.php?date=221010 27. https://apod.nasa.gov/apod/ap221011.html 28. http://www.phy.mtu.edu/faculty/Nemiroff.html 29. http://www.phy.mtu.edu/ 30. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html 31. http://www.astro.umd.edu/ 32. https://apod.nasa.gov/apod/lib/about_apod.html#srapply 33. https://www.nasa.gov/about/highlights/HP_Privacy.html 34. https://astrophysics.gsfc.nasa.gov/ 35. https://www.nasa.gov/ 36. https://www.nasa.gov/centers/goddard/ 37. https://science.nasa.gov/learners 38. http://www.mtu.edu/