{"product_id":"ioptron-tfe100","title":"iOptron Green Moon Filter","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnhances contrast on lunar and planetary features\u003c\/li\u003e\n\u003cli\u003eReduces glare for more comfortable viewing\u003c\/li\u003e\n\u003cli\u003eImproves detail in Martian polar caps and dust storms\u003c\/li\u003e\n\u003cli\u003eHighlights cloud structures on Jupiter and Saturn\u003c\/li\u003e\n\u003cli\u003eThreads into standard astronomy eyepieces and accessories\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eGreen Moon Filter\u003c\/h2\u003e\n\u003cp\u003eThe Green Moon Filter is a fundamental tool for visual observers seeking to increase contrast and reduce glare when viewing bright celestial objects. By selectively passing green light, this filter darkens the sky background and enhances specific surface and atmospheric details on the Moon and planets that are often washed out by unfiltered light. It provides a significant improvement in observable detail, making it an essential accessory for any eyepiece collection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eEnhancing Lunar Detail: From Bright Maria to Subtle Rilles\u003c\/h3\u003e\n\u003cp\u003eWhen observing the Moon, especially during its brighter phases, overwhelming glare can flatten the view and hide subtle features. The Green Moon Filter dims the image to a more comfortable level while dramatically increasing the contrast between lunar features with different albedos (reflectivity). It excels at separating bright ejecta rays from the surrounding terrain and defining the boundaries of dark maria and the floors of craters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003ePlanetary Observation: Isolating Features on Mars, Jupiter, and Venus\u003c\/h3\u003e\n\u003cp\u003eBeyond the Moon, the Green Moon Filter is a versatile planetary accessory. On Mars, it improves the visibility of the polar ice caps and highlights surface frost and high-altitude clouds. For Jupiter and Saturn, it boosts the contrast of their atmospheric belts and zones. It's particularly effective at making the Great Red Spot on Jupiter stand out more clearly and can even help in discerning the faint cloud patterns on Venus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eGreen vs. Neutral Density: Choosing the Right Filter for the Moon\u003c\/h3\u003e\n\u003cp\u003eObservers often choose between a green filter and a standard neutral density (ND) or \"Moon\" filter. While both reduce brightness, they serve different purposes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeutral Density Filter:\u003c\/strong\u003e This filter reduces brightness uniformly across the entire visual spectrum, like sunglasses for your telescope. It provides a natural color view and is purely for glare reduction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGreen Moon Filter:\u003c\/strong\u003e This filter provides targeted contrast enhancement by transmitting only a specific portion of the spectrum. While it also reduces glare, its primary function is to make specific red and blue-toned features appear darker, thereby increasing the visibility of subtle details. For detailed study, the green filter is often the superior choice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the Green Moon Filter do to the view of the Moon?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe Green Moon Filter increases contrast and reduces overall glare. This makes it easier to see fine details like crater walls, rilles, and the subtle textures of the lunar maria. It gives the Moon a green tint but makes surface features stand out more distinctly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the Green Moon Filter useful for planets?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, it is highly effective for several planets. It helps to distinguish the polar caps and dust storms on \u003cstrong\u003eMars\u003c\/strong\u003e, enhances the visibility of the cloud belts and Great Red Spot on \u003cstrong\u003eJupiter\u003c\/strong\u003e, and can reveal faint patterns in the thick atmosphere of \u003cstrong\u003eVenus\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the Green Moon Filter improve views of Mars?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen observing Mars, the Green Moon Filter is excellent for increasing the contrast of the white polar ice caps against the planet's reddish surface. It also helps in identifying high-altitude atmospheric hazes and localized dust storms, which can be difficult to see without filtration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the Green Moon Filter to see cloud bands on Jupiter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. The Green Moon Filter enhances the boundaries between Jupiter's reddish-brown belts and its lighter zones. It is particularly useful for making the Great Red Spot (GRS) appear more defined and can help resolve smaller, transient storms within the Jovian atmosphere.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill this Green Moon Filter make the image dimmer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, all color filters reduce the total amount of light reaching your eye. This dimming effect is beneficial as it reduces glare on bright objects like the Moon and planets, making extended observation more comfortable and revealing more detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow is a Green Moon Filter different from a variable polarizing filter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eA \u003cstrong\u003eGreen Moon Filter\u003c\/strong\u003e enhances contrast by selectively transmitting green light, which helps specific features stand out. A \u003cstrong\u003evariable polarizing filter\u003c\/strong\u003e is a type of neutral density filter that allows you to adjust the brightness from about 1% to 40% transmission without altering color. The polarizer is for controlling glare, while the green filter is for boosting contrast.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eColored Glass Filter - Green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Use\u003c\/td\u003e\n\u003ctd\u003eLunar \u0026amp; Planetary Visual Observing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eGreen Moon Filter\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eProtective Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo downloads are available for this product.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWarranty information for this product is not available.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"iOptron","offers":[{"title":"Default Title","offer_id":52917295448349,"sku":"IOP-TFE100","price":20.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/iOptron-Green-Moon-Filter-1_232402bc-a3c5-4efc-a5d5-fd5c6c38b7bc.jpg?v=1789142198","url":"https:\/\/davidastro.com\/products\/ioptron-tfe100","provider":"David Astro","version":"1.0","type":"link"}