{"title":"IDAS","description":"\u003cp\u003e\u003cstrong\u003eIDAS\u003c\/strong\u003e is the Japanese brand of ICAS Enterprises dedicated to manufacturing \u003cstrong\u003eoptical filters for astrophotography\u003c\/strong\u003e since 2001. Born as the optics division of a company active since 1999, IDAS is today an international reference for light pollution suppression and narrowband filters, distributed worldwide through authorized dealers.\u003c\/p\u003e\u003cp\u003eThe range includes \u003cstrong\u003eLight Pollution Suppression (LPS) filters, narrowband filters (such as NBZ, NB1, NB12, DTD, GNB, HEUIB-II) and UV\/IR Cut filters\u003c\/strong\u003e, designed to enhance the contrast of nebulae and galaxies by reducing light pollution and unwanted light components, for both visual observation and astronomical imaging.\u003c\/p\u003e","products":[{"product_id":"filtro-idas-nebula-booster-nb1-52mm","title":"IDAS Nebula Booster NB1 52mm","description":"\u003ch2\u003eA multi-band filter designed for fast optics\u003c\/h2\u003e\u003cp\u003eThe IDAS Nebula Booster NB1 is a photographic interference filter that simultaneously isolates the H-alpha, H-beta, OIII and SII lines, sharply cutting the stray light from urban light pollution. It's designed specifically for very fast optics (f\/2-f\/4), where traditional nebula filters lose effectiveness due to the spectral shift linked to the angle of light incidence.\u003c\/p\u003e\u003ch3\u003eWhy spectral shift matters\u003c\/h3\u003e\u003cp\u003eWith very fast focal ratios — fast Ritchey-Chrétien astrographs, bright photographic lenses or ultra-fast refractors — the transmission band of an interference filter tends to shift toward shorter wavelengths when light arrives at wide angles. IDAS designed the Nebula Booster series specifically to compensate for this effect, maintaining a sharp (\"flat-top\") cutoff even under extreme imaging conditions.\u003c\/p\u003e\u003ch3\u003eIGAD coating technology\u003c\/h3\u003e\u003cp\u003eThe Nebula Booster NB1 uses IGAD (Ion-Gun Assist Deposition) coating technology, originally developed for fiber-optic telecommunications, where long-term stability of optical coatings (over 25 years) is a critical requirement. Applied to astronomical filters, this technique ensures coatings that remain resistant even under strong temperature and humidity swings, keeping the spectral curve constant over time.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTransmission\u003c\/td\u003e\u003ctd\u003e98%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter diameter\u003c\/td\u003e\u003ctd\u003e52 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMount\u003c\/td\u003e\u003ctd\u003eThreaded ring\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eGlass thickness\u003c\/td\u003e\u003ctd\u003e2.5 mm (parfocal with other IDAS filters)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eInfrared blocking\u003c\/td\u003e\u003ctd\u003eYes, up to 1100 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter type\u003c\/td\u003e\u003ctd\u003eUHC multi-band filter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eNebula Booster\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLight pollution reduction\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eH-alpha band\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for nebulae and galaxies\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eThe Nebula Booster NB1 is suitable for wide-field astrophotography of emission nebulae, with both unmodified DSLR\/mirrorless cameras and one-shot-color astronomy cameras. It's a particularly effective choice paired with fast astrographs and lenses, where it maximizes nebula contrast without compromising the overall color rendition of the sky.\u003c\/p\u003e\u003cp\u003eManufactured by Hutech Corporation (Japan) under the IDAS brand, one of the reference names in high-performance astronomical filter production.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887776932171,"sku":"ID61149","price":299.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro-idas-nebula-booster-nb1-52mm-astronomia.jpg?v=1784624293"},{"product_id":"filtro-idas-ngs1-clip-canon-eos-aps-c","title":"IDAS NGS1 Clip Filter Canon EOS APS-C","description":"\u003ch2\u003eClip filter for Canon EOS APS-C cameras against light pollution\u003c\/h2\u003e\u003cp\u003eThe NGS1 filter, in clip version fitted directly into the Canon EOS APS-C camera body, belongs to IDAS's LPS-D3 series. Unlike narrowband filters, it doesn't isolate a single spectral line but selectively cuts stray light sources, leaving the color balance of broadband subjects like galaxies and star clusters largely unchanged.\u003c\/p\u003e\u003ch3\u003eAlso effective against natural airglow\u003c\/h3\u003e\u003cp\u003eIn addition to artificial light pollution, the NGS1 filter also reduces airglow, the natural glow of the upper atmosphere generated by the recombination of oxygen and nitrogen after exposure to solar UV rays. This phenomenon becomes especially visible in shots taken from high-altitude observing sites under very dark skies, where the NGS1 filter offers a concrete advantage over an unfiltered sensor.\u003c\/p\u003e\u003ch3\u003eDesigned for fast optics\u003c\/h3\u003e\u003cp\u003eLike all IDAS interference filters, the spectral cutoff was designed to remain stable even at the wide angles of incidence typical of very fast photographic optics, thanks to IGAD coating technology.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTransmission\u003c\/td\u003e\u003ctd\u003e97%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eGlass thickness\u003c\/td\u003e\u003ctd\u003e2.5 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMount\u003c\/td\u003e\u003ctd\u003eClip filter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMount material\u003c\/td\u003e\u003ctd\u003eAluminium\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCompatibility\u003c\/td\u003e\u003ctd\u003eCanon EOS APS-C\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eInfrared blocking\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConstruction type\u003c\/td\u003e\u003ctd\u003eCLS broadband filter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eLPS-D3\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLight pollution reduction\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for nebulae and galaxies\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eNo (photographic only)\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSuitable for those shooting with an unmodified Canon EOS APS-C camera body who want to reduce the impact of urban light pollution without altering the sky's natural colors. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887850725707,"sku":"ID64639","price":329.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro-idas-ngs1-clip-canon-eos-aps-c-astronomia.jpg?v=1784624287"},{"product_id":"filtro-idas-ngs1-2-pollici","title":"IDAS NGS1 Filter 2\"","description":"\u003ch2\u003eRound 2\" filter against light pollution and airglow\u003c\/h2\u003e\u003cp\u003e2\" ring-mounted version of the IDAS NGS1 filter, from the LPS-D3 series. It selectively attenuates artificial stray light sources without significantly altering the color balance of broadband objects like galaxies and star clusters, delivering a more natural photographic result than narrowband filters.\u003c\/p\u003e\u003ch3\u003eA filter that also fights the sky's natural glow\u003c\/h3\u003e\u003cp\u003eThe NGS1 also reduces airglow, the faint atmospheric glow generated by the recombination of oxygen and nitrogen molecules after exposure to solar ultraviolet rays. This effect is particularly evident in long-exposure shots taken from high-altitude sites under very dark skies, where the NGS1 filter helps preserve nebula contrast.\u003c\/p\u003e\u003ch3\u003eDesigned for fast optics\u003c\/h3\u003e\u003cp\u003eThanks to IGAD coating technology, the transmission curve remains stable even at the wide angles of incidence typical of very fast photographic optics, avoiding the spectral shifts typical of traditional coatings.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTransmission\u003c\/td\u003e\u003ctd\u003e97%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eGlass thickness\u003c\/td\u003e\u003ctd\u003e2.5 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMount\u003c\/td\u003e\u003ctd\u003e2\" ring\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMount material\u003c\/td\u003e\u003ctd\u003eAluminium\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTelescope connection\u003c\/td\u003e\u003ctd\u003e2\"\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eInfrared blocking\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConstruction type\u003c\/td\u003e\u003ctd\u003eCLS broadband filter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eLPS-D3\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLight pollution reduction\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for nebulae and galaxies\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eNo (photographic only)\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSuitable for astrophotography with telescopes fitted with a 2\" focuser, in contexts with urban or suburban light pollution. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887853707595,"sku":"ID62321","price":239.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro-idas-ngs1-48mm-astronomia-contrasto-luce-artificiale.jpg?v=1784624280"},{"product_id":"filtro-idas-type-4-bgr-l-125-pollici","title":"IDAS Type 4 BGR+L Filter 1.25\"","description":"\u003ch2\u003eTrichromy filter set for color rendition closer to the human eye\u003c\/h2\u003e\u003cp\u003eIDAS's Type 4 series is designed for color imaging through filter combination (BGR or BGR+L), with special attention to color fidelity as perceived by the human eye, an aspect often overlooked in traditional RGB sets for astrophotography.\u003c\/p\u003e\u003ch3\u003eWhy the red filter includes a blue component\u003c\/h3\u003e\u003cp\u003eA small response in the blue (B) band was deliberately built into the red filter (R), to correctly reproduce violet frequencies as violet rather than pure blue, a typical error in conventional RGB filters that don't account for this overlap.\u003c\/p\u003e\u003ch3\u003eB\/G crossover point calibrated on the OIII lines\u003c\/h3\u003e\u003cp\u003eThe crossover point between the blue (B) and green (G) filters sits just below 500nm, to correctly balance the color of the two OIII emission lines (500.7nm and 495.8nm), typical of many planetary and emission nebulae.\u003c\/p\u003e\u003ch3\u003eTwo imaging modes\u003c\/h3\u003e\u003cp\u003eThe set allows both conventional BGR+L imaging, pairing the clear filter (L) as a luminance component to block infrared, and full-band false-color imaging, exploiting the sensor's full spectral sensitivity with infrared-capable optics.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter size\u003c\/td\u003e\u003ctd\u003e1.25\"\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eIGAD multi-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eRGB Type 4\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eType\u003c\/td\u003e\u003ctd\u003eFilter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConstruction type\u003c\/td\u003e\u003ctd\u003eL-RGB filters\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eNo (photographic only)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSpectral stability (IGAD coating)\u003c\/td\u003e\u003ctd\u003eDrift reduced to ±1nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSet suitable for those doing color imaging with monochrome CCD\/CMOS cameras in LRGB configuration, aiming for more faithful color rendition than generic RGB filters. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887856329035,"sku":"ID63995","price":559.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro_astronomia_idas_bgr_type4_m52_1_25_p0_75.jpg?v=1784624274"},{"product_id":"filtro-idas-type-4-bgr-l-31mm","title":"IDAS Type 4 BGR+L Filter 31mm","description":"\u003ch2\u003eTrichromy filter set for color rendition closer to the human eye\u003c\/h2\u003e\u003cp\u003eIDAS's Type 4 series is designed for color imaging through filter combination (BGR or BGR+L), with special attention to color fidelity as perceived by the human eye, an aspect often overlooked in traditional RGB sets for astrophotography. This 31mm version is suitable for cameras with small to medium-format sensors.\u003c\/p\u003e\u003ch3\u003eWhy the red filter includes a blue component\u003c\/h3\u003e\u003cp\u003eA small response in the blue (B) band was deliberately built into the red filter (R), to correctly reproduce violet frequencies as violet rather than pure blue, a typical error in conventional RGB filters that don't account for this overlap.\u003c\/p\u003e\u003ch3\u003eB\/G crossover point calibrated on the OIII lines\u003c\/h3\u003e\u003cp\u003eThe crossover point between the blue (B) and green (G) filters sits just below 500nm, to correctly balance the color of the two OIII emission lines (500.7nm and 495.8nm), typical of many planetary and emission nebulae.\u003c\/p\u003e\u003ch3\u003eTwo imaging modes\u003c\/h3\u003e\u003cp\u003eThe set allows both conventional BGR+L imaging, pairing the clear filter (L) as a luminance component to block infrared, and full-band false-color imaging, exploiting the sensor's full spectral sensitivity with infrared-capable optics.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter size\u003c\/td\u003e\u003ctd\u003e31 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eIGAD multi-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eRGB Type 4\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eType\u003c\/td\u003e\u003ctd\u003eFilter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConstruction type\u003c\/td\u003e\u003ctd\u003eL-RGB filters\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eNo (photographic only)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSpectral stability (IGAD coating)\u003c\/td\u003e\u003ctd\u003eDrift reduced to ±1nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSet suitable for those doing color imaging with compact monochrome CCD\/CMOS cameras in LRGB configuration, aiming for more faithful color rendition than generic RGB filters. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887858786635,"sku":"ID63994","price":999.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro-astronomia-idas-bgr-type4-31mm.jpg?v=1784624268"},{"product_id":"filtro-idas-type-4-bgr-l-52mm","title":"IDAS Type 4 BGR+L Filter 52mm","description":"\u003ch2\u003eTrichromy filter set for color rendition closer to the human eye\u003c\/h2\u003e\u003cp\u003eIDAS's Type 4 series is designed for color imaging through filter combination (BGR or BGR+L), with special attention to color fidelity as perceived by the human eye, an aspect often overlooked in traditional RGB sets for astrophotography. This M52-mounted version is suitable for cameras with larger sensors.\u003c\/p\u003e\u003ch3\u003eWhy the red filter includes a blue component\u003c\/h3\u003e\u003cp\u003eA small response in the blue (B) band was deliberately built into the red filter (R), to correctly reproduce violet frequencies as violet rather than pure blue, a typical error in conventional RGB filters that don't account for this overlap.\u003c\/p\u003e\u003ch3\u003eB\/G crossover point calibrated on the OIII lines\u003c\/h3\u003e\u003cp\u003eThe crossover point between the blue (B) and green (G) filters sits just below 500nm, to correctly balance the color of the two OIII emission lines (500.7nm and 495.8nm), typical of many planetary and emission nebulae.\u003c\/p\u003e\u003ch3\u003eTwo imaging modes\u003c\/h3\u003e\u003cp\u003eThe set allows both conventional BGR+L imaging, pairing the clear filter (L) as a luminance component to block infrared, and full-band false-color imaging, exploiting the sensor's full spectral sensitivity with infrared-capable optics.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter size\u003c\/td\u003e\u003ctd\u003e52 mm (M52)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eIGAD multi-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eRGB Type 4\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eType\u003c\/td\u003e\u003ctd\u003eFilter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConstruction type\u003c\/td\u003e\u003ctd\u003eL-RGB filters\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eNo (photographic only)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSpectral stability (IGAD coating)\u003c\/td\u003e\u003ctd\u003eDrift reduced to ±1nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSet suitable for those doing color imaging with monochrome CCD\/CMOS cameras in full-frame or larger format in LRGB configuration, aiming for more faithful color rendition than generic RGB filters. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887863832907,"sku":"ID63992","price":899.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro_astronomia_IDAS_Type4_BGR_M52.jpg?v=1784624238"},{"product_id":"set-filtri-idas-sho-508mm","title":"IDAS SHO Filter Set 50.8mm","description":"\u003ch2\u003eComplete set of three narrowband filters for SHO imaging\u003c\/h2\u003e\u003cp\u003eIDAS's SHO set brings together three interference filters dedicated to the narrowband imaging technique known as the Hubble palette: ionized hydrogen (H-alpha), doubly ionized oxygen (OIII), and ionized sulfur (SII). Combining the three monochrome exposures in false color produces very high-contrast images of emission nebulae, with a distinctive color rendition highly valued in deep-sky astrophotography.\u003c\/p\u003e\u003ch3\u003eNarrow, targeted transmission bands\u003c\/h3\u003e\u003cp\u003eEach filter isolates a very small portion of the spectrum around its own emission line, blocking nearly all stray light from light pollution and airglow. This makes the set particularly effective even from urban or suburban skies, where traditional broadband filters perform less well.\u003c\/p\u003e\u003ch3\u003eIGAD coating for long-term stability\u003c\/h3\u003e\u003cp\u003eLike the other filters in the IDAS range, the SHO set uses IGAD coating technology, which ensures a transmission curve that stays stable over time even under strong temperature and humidity swings.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eH-alpha bandwidth\u003c\/td\u003e\u003ctd\u003e6.8 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOIII bandwidth\u003c\/td\u003e\u003ctd\u003e6.0 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSII bandwidth\u003c\/td\u003e\u003ctd\u003e6.3 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter size\u003c\/td\u003e\u003ctd\u003e50.8 mm (2\")\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eGlass thickness\u003c\/td\u003e\u003ctd\u003e3 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eIGAD multi-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eSHO\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConstruction type\u003c\/td\u003e\u003ctd\u003eNarrowband (line) filter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSet suitable for narrowband astrophotography of emission nebulae and supernova remnants with telescopes fitted with a 2\" focuser, both under dark skies and in light-polluted conditions. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887865438539,"sku":"ID76810","price":1490.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/set-filtri-idas-50-8mm-filtro-astronomia.jpg?v=1784624234"},{"product_id":"set-filtri-idas-sho-52mm","title":"IDAS SHO Filter Set 52mm","description":"\u003ch2\u003eComplete set of three narrowband filters for SHO imaging\u003c\/h2\u003e\u003cp\u003eIDAS's SHO set brings together three interference filters dedicated to the narrowband imaging technique known as the Hubble palette: ionized hydrogen (H-alpha), doubly ionized oxygen (OIII), and ionized sulfur (SII). Combining the three monochrome exposures in false color produces very high-contrast images of emission nebulae, with a distinctive color rendition highly valued in deep-sky astrophotography. This M52 threaded-mount version is suitable for cameras and filter wheels with a threaded connection.\u003c\/p\u003e\u003ch3\u003eNarrow, targeted transmission bands\u003c\/h3\u003e\u003cp\u003eEach filter isolates a very small portion of the spectrum around its own emission line, blocking nearly all stray light from light pollution and airglow. This makes the set particularly effective even from urban or suburban skies, where traditional broadband filters perform less well.\u003c\/p\u003e\u003ch3\u003eIGAD coating for long-term stability\u003c\/h3\u003e\u003cp\u003eLike the other filters in the IDAS range, the SHO set uses IGAD coating technology, which ensures a transmission curve that stays stable over time even under strong temperature and humidity swings.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eH-alpha bandwidth\u003c\/td\u003e\u003ctd\u003e6.8 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOIII bandwidth\u003c\/td\u003e\u003ctd\u003e6.0 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSII bandwidth\u003c\/td\u003e\u003ctd\u003e6.3 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter size\u003c\/td\u003e\u003ctd\u003e52 mm (M52)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eGlass thickness\u003c\/td\u003e\u003ctd\u003e3 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eIGAD multi-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSeries\u003c\/td\u003e\u003ctd\u003eSHO\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConstruction type\u003c\/td\u003e\u003ctd\u003eNarrowband (line) filter\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSet suitable for narrowband astrophotography of emission nebulae and supernova remnants with cameras or filter wheels with an M52 connection, both under dark skies and in light-polluted conditions. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887866650955,"sku":"ID76811","price":1490.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/set-filtri-idasa-stratti-52mm-astronomia-filtro.jpg?v=1784624227"},{"product_id":"filtro-idas-clear-odw-2-pollici","title":"IDAS Clear ODW Filter 2\"","description":"\u003ch2\u003eA neutral piece of glass to keep focus between filters\u003c\/h2\u003e\u003cp\u003eThe IDAS Clear ODW is a transparent, multi-coated full-spectrum filter, designed not to alter incoming light but to occupy the same optical space as other IDAS filters of the same thickness (2.5mm). This lets anyone using a filter wheel or multi-slot drawer switch from a colored or narrowband filter to the Clear ODW without needing to refocus.\u003c\/p\u003e\u003ch3\u003eWhen a filter that does nothing is actually useful\u003c\/h3\u003e\u003cp\u003eThe Clear ODW is useful in several practical situations: as a reference position in a multi-slot filter wheel for full-spectrum (luminance) shots, for optical calibration tests, or simply to keep the optical path constant when alternating between sessions with and without a filter. Being fully transparent across the visible spectrum, it introduces no color alteration whatsoever.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003cp\u003eAluminum 2\" ring mount, with a 48mm threaded connection. Transparent glass with a thickness of 2.5mm, parfocal with most other IDAS filters in the same category.\u003c\/p\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSuitable for anyone who already owns other 2.5mm-thick IDAS filters and wants a neutral position in their filter wheel, without having to refocus every time they switch filters. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887870157131,"sku":"ID75295","price":159.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro-astronomia-clear-odw-48mm-idast.jpg?v=1784624224"},{"product_id":"filtro-idas-lps-d3-drop-in-canon-ef","title":"IDAS LPS-D3 Drop-In Filter Canon EF","description":"\u003ch2\u003eDrop-in filter for Canon EF full-frame lenses\u003c\/h2\u003e\u003cp\u003eThe IDAS LPS-D3 filter (formerly known as the NGS1 series), in drop-in version, fits into the rear mount of Canon EF lenses designed for full-frame camera bodies. Unlike narrowband filters, it acts selectively on artificial light sources without significantly altering the color balance of broadband subjects like galaxies and star clusters.\u003c\/p\u003e\u003ch3\u003eAlso effective against natural airglow\u003c\/h3\u003e\u003cp\u003eIn addition to artificial light, the LPS-D3 filter also reduces airglow, the faint glow of the upper atmosphere generated by the recombination of oxygen and nitrogen after exposure to solar UV rays, a phenomenon that becomes especially visible in shots taken from high-altitude sites under very dark skies.\u003c\/p\u003e\u003ch3\u003eDesigned for fast photographic optics\u003c\/h3\u003e\u003cp\u003eThanks to IGAD coating technology, the filter's transmission curve remains stable even at the wide angles of incidence typical of very fast photographic lenses, a critical aspect for anyone photographing the sky with photo telephoto lenses rather than dedicated telescopes.\u003c\/p\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSuitable for anyone photographing the night sky with Canon EF lenses on a full-frame camera body, in contexts with urban or suburban light pollution, without needing to modify the camera. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887875924299,"sku":"ID75297","price":349.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro-astronomia-idas-lps-d3-drop-in-canon-ef.jpg?v=1784624219"},{"product_id":"filtro-idas-nbz-ii-10nm-2-pollici","title":"IDAS NBZ-II Filter 10nm 2\"","description":"\u003ch2\u003eA dual-band filter for narrowband imaging in a single session\u003c\/h2\u003e\u003cp\u003eThe IDAS NBZ-II filter simultaneously transmits the red H-alpha line and the blue-green OIII lines, increasing the contrast of emission nebulae and allowing narrowband images to be obtained with just one series of exposures, without needing to alternate between multiple single-band filters.\u003c\/p\u003e\u003ch3\u003eDesigned to work well even with very fast optics\u003c\/h3\u003e\u003cp\u003eThe filter is compatible with telescopes and photographic lenses down to f\/1.4, making it usable on virtually any standard optic and most fast photographic lenses. The 10nm bandwidth for H-alpha and 8nm for OIII is slightly wider than the 7nm dual-band filters of other manufacturers: this extra margin avoids the severe transmission loss (sometimes over 50%) that occurs with narrower filters when used on very fast optics (around f\/2), making the NBZ-II suitable for both slow and fast systems without needing to change filters.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eH-alpha bandwidth\u003c\/td\u003e\u003ctd\u003e10 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOIII bandwidth\u003c\/td\u003e\u003ctd\u003e8 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter thickness\u003c\/td\u003e\u003ctd\u003e2.0 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMount\u003c\/td\u003e\u003ctd\u003e2\" ring\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMount material\u003c\/td\u003e\u003ctd\u003eAluminium\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eMulti-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptics compatibility\u003c\/td\u003e\u003ctd\u003eDown to f\/2 (also usable on slower systems)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eInfrared blocking\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eNo (photographic only)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for nebulae and galaxies\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for double stars\u003c\/td\u003e\u003ctd\u003eNo\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for Moon and planets\u003c\/td\u003e\u003ctd\u003eNo\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSuitable for narrowband astrophotography of planetary nebulae, emission nebulae and supernova remnants with telescopes fitted with a 2\" focuser, particularly for those using fast astrographs who don't want to give up a universal filter that also works on slower systems. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887881331019,"sku":"ID87198","price":362.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro-idas-nbz-ii-10nm-2-polarisazione-astronomia.jpg?v=1784624216"},{"product_id":"filtro-idas-nbz-ii-m52","title":"IDAS NBZ-II Filter M52","description":"\u003ch2\u003eA dual-band filter for narrowband imaging in a single session\u003c\/h2\u003e\u003cp\u003eThe IDAS NBZ-II filter simultaneously transmits the red H-alpha line and the blue-green OIII lines, increasing the contrast of emission nebulae and allowing narrowband images to be obtained with just one series of exposures, without needing to alternate between multiple single-band filters. This M52 threaded-mount version is designed for direct installation on astronomy cameras and filter wheels with a threaded connection, a more compact alternative to the 2\" ring version.\u003c\/p\u003e\u003ch3\u003eDesigned to work well even with very fast optics\u003c\/h3\u003e\u003cp\u003eThe filter is compatible with telescopes and photographic lenses down to f\/1.4, making it usable on virtually any standard optic and most fast photographic lenses. The 10nm bandwidth for H-alpha and 8nm for OIII is slightly wider than the 7nm dual-band filters of other manufacturers: this extra margin avoids the severe transmission loss (sometimes over 50%) that occurs with narrower filters when used on very fast optics (around f\/2), making the NBZ-II suitable for both slow and fast systems without needing to change filters.\u003c\/p\u003e\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\u003cth\u003eParameter\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eH-alpha bandwidth\u003c\/td\u003e\u003ctd\u003e10 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOIII bandwidth\u003c\/td\u003e\u003ctd\u003e8 nm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFilter thickness\u003c\/td\u003e\u003ctd\u003e2.0 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMount\u003c\/td\u003e\u003ctd\u003eM52 thread\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptical coating\u003c\/td\u003e\u003ctd\u003eMulti-coating\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOptics compatibility\u003c\/td\u003e\u003ctd\u003eDown to f\/2 (also usable on slower systems)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eInfrared blocking\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePhotographic use\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVisual use\u003c\/td\u003e\u003ctd\u003eNo (photographic only)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for nebulae and galaxies\u003c\/td\u003e\u003ctd\u003eYes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for double stars\u003c\/td\u003e\u003ctd\u003eNo\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSuitable for Moon and planets\u003c\/td\u003e\u003ctd\u003eNo\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eWho it's recommended for\u003c\/h2\u003e\u003cp\u003eSuitable for narrowband astrophotography of planetary nebulae, emission nebulae and supernova remnants with cameras or filter wheels with an M52 connection, particularly for those using fast astrographs who don't want to give up a universal filter that also works on slower systems. Made in Japan by Hutech Corporation under the IDAS brand.\u003c\/p\u003e","brand":"IDAS","offers":[{"title":"Default Title","offer_id":57887917506891,"sku":"ID90932","price":349.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/files\/filtro-idas-nbzII-52-mm-astronomia.jpg?v=1784624211"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0886\/1981\/1147\/collections\/IDAS-logo.png?v=1784756298","url":"https:\/\/adriasky.it\/en\/collections\/idas.oembed","provider":"Adriasky","version":"1.0","type":"link"}