{"product_id":"filtro-pro-veil-sii-3nm-2","title":"Pro Veil SII 3nm 2'' Filter","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cb\u003eHidden in the light: The colors of the emission nebula\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThere are a lot of lights in and around human settlements. This lighting not only helps them find their way in the dark, but also illuminates the sky. Faint celestial objects disappear, hidden by the artificial brightness of the sky.\u003c\/p\u003e\n\u003cp\u003eUnlike stellar objects such as globular clusters and galaxies, or reflection nebulae, such as the blue glow around the Pleiades, emission nebulae emit their light in very specific colors. The brightest of these so-called emission lines are\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eH-Alpha: 656.3 nm\u003c\/li\u003e\n\u003cli\u003eH-Beta: 486.1 nm\u003c\/li\u003e\n\u003cli\u003eO-III_1: 495.9 nm\u003c\/li\u003e\n\u003cli\u003eO-III_2: 500.7 nm\u003c\/li\u003e\n\u003cli\u003eS-II_1: 671.7 nm\u003c\/li\u003e\n\u003cli\u003eS-II_2: 673.1 nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhile only the O-III and H-beta lines can be distinguished with the naked eye due to the human eye's poor red sensitivity, a camera can capture all colors.\u003c\/p\u003e\n\u003cp\u003eHigh-performance nebula filters, such as the Omegon Veil nebula filters, suppress artificial lighting but allow the colors of the nebulae to pass through. In this way, faint emission nebulae, such as the Cirrus nebula or the North America nebula, can also be observed outside the desert or high mountains.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003esii filter:\u003c\/b\u003e the narrowband filter lets light from ionized sulfur atoms pass at \u003cb\u003e671.7 and 673.1 nanometers\u003c\/b\u003e. These are the lines in which many planetary nebulae, emission nebulae, and supernova remnants glow.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eAstrophotography:\u003c\/b\u003e it is best to use monochromatic cameras. Ideally, combine the capture with SII, OIII, and H-Alpha filters. The result is an image that shows the delicate structures of the nebula with high contrast and great sharpness.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Omegon","offers":[{"title":"Default Title","offer_id":53581587448151,"sku":"82013","price":388.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/6198\/6860\/files\/82013_1.jpg?v=1779016114","url":"https:\/\/astrotelescopios.com\/en-us\/products\/filtro-pro-veil-sii-3nm-2","provider":"Astro Telescopios","version":"1.0","type":"link"}