{"id":40949,"date":"2019-12-14T12:55:00","date_gmt":"2019-12-14T09:55:00","guid":{"rendered":"https:\/\/skyandweather.gr\/product\/explore-scientific-%cf%80%cf%81%ce%bf%cf%83%ce%bf%cf%86%ce%b8%ce%ac%ce%bb%ce%bc%ce%b9%ce%bf%cf%82-52-ler-40mm-2\/"},"modified":"2026-02-17T23:40:36","modified_gmt":"2026-02-17T20:40:36","slug":"explore-scientific-52-ler-40mm-2-eyepiece","status":"publish","type":"product","link":"https:\/\/skyandweather.gr\/en\/product\/explore-scientific-52-ler-40mm-2-eyepiece\/","title":{"rendered":"Explore Scientific 52\u00b0 LER 40mm 2\u2019\u2019 Eyepiece"},"content":{"rendered":"<p style=\"text-align: center\"><b>The longest focal length in the 52\u00b0 Series<\/b>\u00a0with the longest eye relief,\u00a0<b>the 40mm is also the only 2.0-inch<\/b>\u00a0O.D. eyepiece in this series.\u00a0<b>Explore Scientific now has three 40mm eyepieces<\/b>\u00a0in its collection, the other two are the 40mm 62\u00b0 Series, and the 40mm 68\u00b0 Series.<b>\u00a0At this focal length, this eyepiece is generally reserved for deep sky observers<\/b>\u00a0who challenge themselves to observe near the faintest observable limit of their telescopes. The\u00a0<b>huge true field of view<\/b>\u00a0is perfect for deep sky objects like the Andromeda Galaxy, the Rosette Nebula, as well as large star clusters, and comets.<\/p>\n<p style=\"text-align: center\"><b>Comfort, Quality, Value.<\/b>\u00a0The\u00a0<b>Explore Scientific 52\u00b0 LER Series<\/b>\u00a0<b>mid-range focal length eyepieces<\/b>\u00a0are\u00a0<b>excellent flat-field multi-element oculars\u00a0<\/b>that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece.\u00a0<b>Expect exceptional quality and value versus a comparably priced Plossl.<\/b><\/p>\n<p style=\"text-align: center\"><b>These eyepieces are the choice for observers wearing glasses<\/b>\u00a0&#8211; with excellent performance and durability. The rubber inlet and the foldable eyecups make handling and using in the field easy. The\u00a0<b>patented EMD-coating<\/b>\u00a0produces\u00a0<b>high contrast images<\/b>\u00a0and prevents reflexes and ghosting. The argon purging effectively prevents internal fogging, and you don\u00b4t have to deal with dirt, fungus or cleansing fluids getting between the lenses.\u00a0<b>The eyepieces are sealed &#8211; this makes sure you will be able to enjoy these eyepieces for many years to come.<\/b><\/p>\n<p><b>Features:<\/b><\/p>\n<ul>\n<li>Large eye distance, large field and great image sharpness<\/li>\n<li>Excellent viewing position for people with glasses<\/li>\n<li>Excellent field sharpness even with fast optics<\/li>\n<li>52\u00b0 apparent field of view<\/li>\n<li>Argon-purging prevents internal fogging, the sealing facilitates cleaning<\/li>\n<li>Patented EMD-coating to maximize contrast<\/li>\n<li>Blackened lens edges to avoid reflexes<\/li>\n<li>All eyepieces of this series are parfocal<\/li>\n<li>Stainless steel barrel with conical security cutoff<\/li>\n<li>Dust covers and protective bag included<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<table class=\"MsoNormalTable\" style=\"width: 387pt;margin-left: 5.15pt;border-collapse: collapse\" border=\"0\" width=\"516\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 35.1pt\">\n<td style=\"width: 387pt;border-color: #000000 #0070c0;border-width: 1pt 1pt 1.5pt;border-style: solid;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 35.1pt;text-align: left\" colspan=\"5\" nowrap=\"nowrap\" width=\"516\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><b><span style=\"font-size: 18pt;font-family: Cambria, serif;color: #1f497d\">Specifications<\/span><\/b><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 20.1pt\">\n<td style=\"width: 309.35pt;border-color: #0070c0;border-style: none solid none none;border-width: medium 1pt medium medium;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"412\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><b><span style=\"color: #1f497d\">Type<\/span><\/b><\/p>\n<\/td>\n<td style=\"width: 77.65pt;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" colspan=\"4\" nowrap=\"nowrap\" width=\"104\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span style=\"color: #000000\">Super Plossl<\/span><span lang=\"en-us\" style=\"color: #000000\" xml:lang=\"en-us\"> &#8211; LER<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 20.1pt\">\n<td style=\"width: 309.35pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"412\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><b><span style=\"color: #1f497d\">Number of lenses<\/span><\/b><\/p>\n<\/td>\n<td style=\"width: 59.5pt;border-color: #0070c0;border-style: none none none solid;border-width: medium medium medium 1pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"79\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"en-us\" style=\"color: #000000\" xml:lang=\"en-us\">&#8211;<\/span><\/p>\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<\/tr>\n<tr style=\"height: 20.1pt\">\n<td style=\"width: 309.35pt;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"412\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><b><span style=\"color: #1f497d\">Focal length (mm)<\/span><\/b><\/p>\n<\/td>\n<td style=\"width: 77.65pt;border-color: #0070c0;border-style: none none none solid;border-width: medium medium medium 1pt;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" colspan=\"4\" nowrap=\"nowrap\" width=\"104\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"en-us\" style=\"color: #000000\" xml:lang=\"en-us\">40<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 20.1pt\">\n<td style=\"width: 309.35pt;border-color: #0070c0;border-style: none solid none none;border-width: medium 1pt medium medium;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"412\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><b><span style=\"color: #1f497d\">Barrel size (&#8221;)<\/span><\/b><\/p>\n<\/td>\n<td style=\"width: 59.5pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"79\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"en-us\" style=\"color: #000000\" xml:lang=\"en-us\">2<\/span><span style=\"color: #000000\">&#8221;<\/span><\/p>\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<\/tr>\n<tr style=\"height: 20.1pt\">\n<td style=\"width: 309.35pt;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"412\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><b><span style=\"color: #1f497d\">Eye Relief (mm)<\/span><\/b><\/p>\n<\/td>\n<td style=\"width: 77.65pt;border-color: #0070c0;border-style: none none none solid;border-width: medium medium medium 1pt;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" colspan=\"4\" nowrap=\"nowrap\" width=\"104\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span lang=\"en-us\" style=\"color: #000000\" xml:lang=\"en-us\">27<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 20.1pt\">\n<td style=\"width: 309.35pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"412\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><b><span style=\"color: #1f497d\">Apparent field of view (\u00b0)<\/span><\/b><\/p>\n<\/td>\n<td style=\"width: 59.5pt;border-color: #0070c0;border-style: none none none solid;border-width: medium medium medium 1pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"79\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span style=\"color: #000000\">52<\/span><\/p>\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;background: #f6ecfe none repeat scroll 0% 0%;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<\/tr>\n<tr style=\"height: 20.1pt\">\n<td style=\"width: 309.35pt;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" nowrap=\"nowrap\" width=\"412\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><b><span style=\"color: #1f497d\">Weight (kg)<\/span><\/b><\/p>\n<\/td>\n<td style=\"width: 77.65pt;border-color: #0070c0;border-style: none none none solid;border-width: medium medium medium 1pt;padding: 0cm 5.4pt;height: 20.1pt;text-align: left\" colspan=\"4\" nowrap=\"nowrap\" width=\"104\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\"><span style=\"color: #000000\">0,<\/span><span lang=\"en-us\" style=\"color: #000000\" xml:lang=\"en-us\">390<\/span><\/p>\n<\/td>\n<\/tr>\n<tr style=\"height: 24.95pt\">\n<td style=\"width: 309.35pt;border-color: #0070c0;border-style: double none none;border-width: 2.25pt medium medium;padding: 0cm 5.4pt;height: 24.95pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"412\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 59.5pt;border-color: #0070c0;border-style: double none none;border-width: 2.25pt medium medium;padding: 0cm 5.4pt;height: 24.95pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"79\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;border-color: #0070c0;border-style: double none none;border-width: 2.25pt medium medium;padding: 0cm 5.4pt;height: 24.95pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;border-color: #0070c0;border-style: double none none;border-width: 2.25pt medium medium;padding: 0cm 5.4pt;height: 24.95pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<td style=\"width: 6.05pt;border-color: #0070c0;border-style: double none none;border-width: 2.25pt medium medium;padding: 0cm 5.4pt;height: 24.95pt;text-align: left\" valign=\"bottom\" nowrap=\"nowrap\" width=\"8\">\n<p class=\"MsoNormal\" style=\"margin-bottom: .0001pt;line-height: normal\">\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><strong>Flat field eyepieces with extremely high image resolution. Ideal for lunar and planetary observation.<\/strong><\/p>\n","protected":false},"featured_media":40947,"template":"","meta":[],"product_brand":[],"product_cat":[816,815,775,788,748],"product_tag":[],"class_list":{"0":"post-40949","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-52-ler","7":"product_cat-explore-scientific","8":"product_cat-775","9":"product_cat-788","10":"product_cat-748","11":"pa_estiaki-apostasi-40-mm","12":"pa_fainomeno-pedio-50-60","13":"pa_syndesi-me-tileskopio-804","15":"first","16":"onbackorder","17":"shipping-taxable","18":"purchasable","19":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Explore Scientific 52\u00b0 LER 40mm 2\u2019\u2019 Eyepiece - Sky and weather<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/skyandweather.gr\/en\/product\/explore-scientific-52-ler-40mm-2-eyepiece\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Explore Scientific 52\u00b0 LER 40mm 2\u2019\u2019 Eyepiece - Sky and weather\" \/>\n<meta property=\"og:description\" content=\"Flat field eyepieces with extremely high image resolution. 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