[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-143850-105":59,"doc-detail-143850-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","danjonquiz2018-danjon-scale-of-lunar-eclipse-brightness-eclipse-quiz","DanjonQuiz2018 - Danjon Scale of Lunar Eclipse Brightness - Eclipse Quiz","","Danjon Scale of Lunar Eclipse Brightness defines a 5-point (0 to 4) luminosity and color “L” system for classifying the appearance of the Moon during lunar eclipses. The guide lists visual descriptions for each L value, from very dark and nearly invisible at L=0 to bright copper-red or orange at L=4. An eclipse quiz then trains estimation of L across seven eclipses, using unaided eye observing and allowing fractional values when uncertain.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":20,"@type":76,"position":81},"https://docshare.wps.com/document/exam/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/danjonquiz2018-danjon-scale-of-lunar-eclipse-brightness-eclipse-quiz/143850/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/danjonquiz2018-danjon-scale-of-lunar-eclipse-brightness-eclipse-quiz/143850.png","ImageObject",300,407,{"name":92,"@type":93},"Dozel","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-09-20","2026-08-25",true,{"@type":102,"interactionType":103,"userInteractionCount":24},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the Danjon scale used for?","Question",{"text":112,"@type":113},"It is used to catalog the luminosity and color of the Moon during lunar eclipses using a 5-point L scale (0–4).","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How do I interpret L = 2 versus L = 3?",{"text":117,"@type":113},"L=2 corresponds to a deep red or rust-colored Moon with some visible details, while L=3 shows a brick-red Moon where details are clearly visible.",{"name":119,"@type":110,"acceptedAnswer":120},"What should I use when estimating L for a real eclipse?",{"text":121,"@type":113},"Use unaided eye observation (glasses or contact lenses are OK) and avoid binoculars or a telescope.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},143850,1787696973,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":19,"category_name":20,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":24,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},962085662650,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","Danjon Scale of Lunar Eclipse Brightness  \nAround 1920, the French astronomer André-Louis Danjon devised a 5-point scale (0 to 4) for cataloguing the Luminosity “L”and color of lunar eclipses . Here is the scale:  \nL = 0 Very dark moon, almost invisible .  \nL = 1 Dark gray or brownish moon; details on moon not visible.  \nL = 2 Deep red or rust-colored moon; can see some details.  \nL = 3 Brick-red colored moon; details on moon are visible.  \nL = 4 Bright copper-red or orange colored moon; details easy to see .  \nEclipse Quiz:  \nNow, hone your skill at estimating the “L” values of seven different eclipses. Each “test” slide is followed by the same slide with the best estimate highlighted. If you can’t decide between two L values, say 2 and 3, you may split the difference  \nand call it 2 .5, for example.  \nWhen making estimates of a real eclipse, be sure to use your unaided eye (glasses or contact lenses are OK), and NOT binoculars or telescope. And note the time!  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .  \nA. L = 0 Very dark moon, almost invisible .  \nB. L = 1 Dark gray or brownish moon; details on moon not visible.  \nC. L = 2 Deep red or rust-colored moon; can see some details.  \nD. L = 3 Brick-red colored moon; details on moon are visible.  \nE. L = 4 Bright copper-red or orange colored moon; details easy to see .","cbCaitjPYzBnHpFg","https://ap.wps.com/l/cbCaitjPYzBnHpFg","pdf",762305,15,"English","# Danjon Scale of Lunar Eclipse Brightness\n## L = 0 to L = 4 scale descriptions\n# Eclipse Quiz","[{\"question\":\"What is the Danjon scale used for?\",\"answer\":\"It is used to catalog the luminosity and color of the Moon during lunar eclipses using a 5-point L scale (0–4).\"},{\"question\":\"How do I interpret L = 2 versus L = 3?\",\"answer\":\"L=2 corresponds to a deep red or rust-colored Moon with some visible details, while L=3 shows a brick-red Moon where details are clearly visible.\"},{\"question\":\"What should I use when estimating L for a real eclipse?\",\"answer\":\"Use unaided eye observation (glasses or contact lenses are OK) and avoid binoculars or a telescope.\"}]","DanjonQuiz2018 - Danjon Scale of Lunar Eclipse Brightness - Eclipse Quiz | PDF",38]