{"product_id":"astronomik-planet-ir-pro-742-filter-31mm-round-mounted","title":"Astronomik Planet IR Pro 742 Filter - 31mm Round Mounted","description":"\u003cp\u003e\u003cstrong\u003eAstronomik 31mm Planet IR Pro 742 Filter\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMounted in Low Profile Non-Threaded Round Cell\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Astronomik ProPlanet 742 is the ideal filters for the reception of the moon and planets, notably Mars, with telescopes from 6-inch (150mm) aperture. \u003cbr\u003e\u003cbr\u003e The planet IR Pro 742 only allows infrared light with wavelengths of more than 742nm to pass. In this wavelength range the effects of seeing are significantly lower than in the visible spectrum of the human eye. This allows much sharper images than are usually obtained from your device and location. Another advantage is that the sky background of advanced dawn is dark and so the filter even allows photography of the planets and the moon at daylight. \u003cbr\u003e\u003cbr\u003e The Astronomik ProPlanet 742 cuts off the visible part of the spectrum and allows the light of wavelengths longer then 742nm to pass. Due to this behavior the part of the spectrum that is most sensitive to bad seeing is rejected. This approach does a big improvement to the imaging of planets and the moon. The image is more steady than the image in the visible light with nearly identical exposure times. \u003cbr\u003e\u003cbr\u003e Besides astrophotography the filter allows you to get stunning results in nature photography. If an EOS-Clip Filter is used in an MC modified DSLR you get tremendous results imaging the flora. The filter cuts off the part of the spectrum where Chlorophyll looks green and shows its high reflectivity in the near infrared. If trees are photographed in spring and summer under blue skies you get stunning images with white trees and clouds in front of a near black background. The Astronomik ProPlanet 742 darkens the background during twilight and allows imaging of bright planets, stars and comets by day. It also promotes imaging of young stars in dust clouds and stellar nurseries. (When the seeing is very bad and the instrument is 10-inch (250mm) or larger, the Astronomik ProPlanet 807 may be the better choice.)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eNow Mounted in Low Profile Non-Threaded Cell\u003c\/h2\u003e\n\u003cp\u003eSometimes unmounted filters can be hard to handle. The smaller diameters, such as this 31mm ProPlanet filter, can be especially difficult to pick up and insert or remove from the filter wheel, and that can lead to possible damage as well as unwanted reflections from incorrectly installed filters. Astronomik has solved this problem by mounting their 31mm and 36mm filters in a low profile (3mm) non-threaded cell. O-rings, washers, or spacers are no longer required to hold the filter in place, and because the cell is only 3mm thick, it works well in all appropriately sized filter wheels. Mounted 31mm and 36mm Astronomik filters will also play nice with unmounted versions in the same carousel.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eAstronomik Planet IR Pro 742 Filter - 31mm Round Mounted Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMore then 96-inch transmission for wavelengths of 742nm to 1100nm\u003c\/li\u003e\n\u003cli\u003eBlocking of wavelengths between 350nm and 730nm\u003c\/li\u003e\n\u003cli\u003eParfocal with other Astronomik filters\u003c\/li\u003e\n\u003cli\u003eGlass thickness: 1mm\u003c\/li\u003e\n\u003cli\u003eCell thickness: 3mm\u003c\/li\u003e\n\u003cli\u003eCompletely resistant against high humidity, scratches and aging effects\u003c\/li\u003e\n\u003cli\u003eDiffraction limited, the filter will not reduce the optical performance of your telescope!\u003c\/li\u003e\n\u003cli\u003eAstronomik filters are delivered in a high-quality, long lasting, filter box\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Astronomik","offers":[{"title":"Default Title","offer_id":50861402423361,"sku":"ptr1793372131633","price":46.33,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0727\/9309\/6257\/files\/astronomik-planet-ir-pro-742-filter---31mm-round-mounted_1.jpg?v=1793372143","url":"https:\/\/moiremix.shop\/products\/astronomik-planet-ir-pro-742-filter-31mm-round-mounted","provider":"My Store","version":"1.0","type":"link"}