{"id":26568,"date":"2026-08-23T22:36:33","date_gmt":"2026-08-23T21:36:33","guid":{"rendered":"https:\/\/www.petrhoralek.com\/?p=26568"},"modified":"2026-08-23T23:39:49","modified_gmt":"2026-08-23T22:39:49","slug":"lunar-eclipses-flower","status":"publish","type":"post","link":"https:\/\/www.petrhoralek.com\/?p=26568","title":{"rendered":"Lunar Eclipses Flower"},"content":{"rendered":"
\"Lunar<\/a>

Lunar Eclipses Flower<\/p><\/div>\n

This unusual mosaic is composed of random phases of all 18 significant lunar eclipses over the past decade (total, partial, and penumbral ones), also captured from Cerro Tololo<\/a> and Kitt Peak National Observatory<\/a>, and including the century’s longest one<\/a> in the center of the mosaic (captured from Rhodes, Greece). The sizes and positions of the full moons are normalized to the unit angular diameter of the Earth’s shadow given by NASA<\/a> to show the circular shadow of Earth. The composite shows different shades in the Earth’s shadow depending on the position of the Moon in it. The blue edge<\/a> caused by short-wave radiation penetrating the lunar surface through the ozone layer is also visible. For most of them, I used Canon 6D or Nikon Z6III, 1000mm, f10, 4-6s exposures from Vixen GP-2 mount.<\/p>\n

Full credit:<\/b> KPNO\/NOIRLab\/NSF\/AURA\/Petr Hor\u00e1lek\/<\/span>Institute of Physics in Opava<\/span><\/a>\/Robert Sparks\/Josef Kujal\/<\/span>John Melson<\/span><\/a>\/<\/span>Dave Hash\/Wikimedia<\/span><\/a><\/p>\n

More about imgaes used in this mosaic<\/strong><\/p>\n

This table contains more infomration about used images in the mosaic. Most of the eclipses were captured by me. Around period of COVID-19, however, I was not able to travel for the eclipses, so I used images taken by my colleagues who agreed with participating in this project. The table also shows, how the diameters of the lunar discs were normalized according to the actual distance of the Moon as well as the angular sizes of the Earth shadow in the sky during the particular eclipses.<\/p>\n

<\/div>
Lunar Eclipses Flower<\/div><\/div>
<\/th><\/th><\/th><\/th><\/th><\/th><\/th><\/th><\/th><\/tr><\/thead>
Date of Image <\/td>Location <\/td>Camera <\/td>Focal Length (mm) <\/td>Moon Distance (km) <\/td>Ratio (to largest on Jan 2019) <\/td>Shadow Ratio <\/td>Author <\/td>Note <\/td><\/tr>
16 September 2016 <\/td>\u00dastupky, Czech Republic <\/td>Canon 6D <\/td>1800 <\/td>363 255 <\/td>0,975623185 <\/td>1,030436524 <\/td>Petr Hor\u00e1lek <\/td><\/td><\/tr>
11 February 2017 <\/td>\u00dastupky, Czech Republic <\/td>Canon 6D <\/td>1000 <\/td>372 703 <\/td>0,950891192 <\/td>1,086723919 <\/td>Petr Hor\u00e1lek <\/td><\/td><\/tr>
7 August 2017 <\/td>Garching, Germany <\/td>Canon 6D <\/td>500 <\/td>394 338 <\/td>0,898721401 <\/td>1,144403262 <\/td>Petr Hor\u00e1lek\/ESO <\/td><\/td><\/tr>
31 January 2018 <\/td>Koh Samui, Thailad <\/td>Canon 6D <\/td>1100 <\/td>357 170 <\/td>0,992244589 <\/td>1,020087221 <\/td>Petr Hor\u00e1lek <\/td><\/td><\/tr>
27 July 2018 <\/td>Rhodes, Greece <\/td>Canon 6D <\/td>1100 <\/td>402 930 <\/td>0,879557243 <\/td>1,189734895 <\/td>Petr Hor\u00e1lek <\/td>Most distant from Earth <\/td><\/tr>
21 January 2019 <\/td>Boa Vista, Cape Verde <\/td>Canon 6D <\/td>1100 <\/td>354 400 <\/td>1 <\/td>1,011134399 <\/td>Petr Hor\u00e1lek <\/td>Closest to Earth <\/td><\/tr>
16 July 2019 <\/td>Prose\u010d u Se\u010de, Czech Republic <\/td>Canon 6D <\/td>1100 <\/td>397 263 <\/td>0,892104223 <\/td>1,15987979 <\/td>Petr Hor\u00e1lek <\/td><\/td><\/tr>
10 January 2020 <\/td>Studnice, Czech Republic <\/td>Canon 6D <\/td>1100 <\/td>367 719 <\/td>0,963779408 <\/td>1,064983444 <\/td>Petr Hor\u00e1lek <\/td><\/td><\/tr>
26 May 2021 <\/td>Mountain View, California <\/td>Canon 7D Mk II <\/td>1490 <\/td>356 010 <\/td>0,995477655 <\/td>1 <\/td>David Hash (Wikimedia, CC4.0) <\/td>Reference for normalized U. Radius <\/td><\/tr>
26 May 2021 <\/td>n\/a <\/td>SONY a7iii <\/td>600 <\/td>356 010 <\/td>0,995477655 <\/td>1 <\/td>John Melson <\/td>Reference for normalized U. Radius <\/td><\/tr>
19 November 2021 <\/td>Kitt Peak National Observatory, USA <\/td>Canon Ra <\/td>n\/a <\/td>399 665 <\/td>0,886742647 <\/td>1,199720236 <\/td>Robert Sparks <\/td><\/td><\/tr>
16 May 2022 <\/td>San Pedro de Atacama, Chile <\/td>Canon Ra <\/td>1100 <\/td>355 740 <\/td>0,996233204 <\/td>1,018337731 <\/td>Petr Hor\u00e1lek, Josef Kujal <\/td><\/td><\/tr>
8 November 2022 <\/td>Kitt Peak National Observatory, USA <\/td>Canon Ra <\/td>1000 <\/td>386 260 <\/td>0,917516699 <\/td>1,137992039 <\/td>Petr Hor\u00e1lek\/AURA\/NOIRLab <\/td><\/td><\/tr>
28 October 2023 <\/td>Mal\u00e1 T\u0159\u0148a, Slovakia <\/td>Canon Ra <\/td>1400 <\/td>365 005 <\/td>0,970945603 <\/td>1,053644554 <\/td>Petr Hor\u00e1lek <\/td><\/td><\/tr>
18 September 2024 <\/td>Tatransk\u00e1 Lomnica, Slovakia <\/td>Canon Ra <\/td>1400 <\/td>356 053 <\/td>0,995357433 <\/td>1,002858256 <\/td>Petr Hor\u00e1lek <\/td><\/td><\/tr>
14 March 2025 <\/td>Cerro Tololo, Chile <\/td>Canon Ra <\/td>1400 <\/td>396 766 <\/td>0,893221697 <\/td>1,180816888 <\/td>Petr Hor\u00e1lek\/AURA\/NOIRLab <\/td><\/td><\/tr>
7 September 2025 <\/td>Z\u00e1hradn\u00e9, Slovakia <\/td>Nikon Z6III <\/td>1250 <\/td>367 940 <\/td>0,963200522 <\/td>1,048207496 <\/td>Petr Hor\u00e1lek, Josef Kujal <\/td><\/td><\/tr>
3 March 2026 <\/td>Kitt Peak National Observatory, USA <\/td>Nikon Z6III <\/td>1400 <\/td>379 756 <\/td>0,933230811 <\/td>1,105398826 <\/td>Petr Hor\u00e1lek\/AURA\/NOIRLab <\/td><\/td><\/tr><\/tbody><\/table><\/div>\n","protected":false},"excerpt":{"rendered":"

This unusual mosaic is composed of random phases of all 18 significant lunar eclipses over the past decade (total, partial, and penumbral ones), also captured from Cerro Tololo and Kitt Peak National Observatory, and including the century’s longest one in the center of the mosaic (captured from Rhodes, Greece). The sizes and positions of the…
Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":26569,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[4,9],"tags":[],"class_list":["post-26568","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-eclipses","category-the-moon-and-lunar-phenomena"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t