{"title":"Utility Filters","description":"","products":[{"product_id":"star-analyser-100","title":"Star Analyser 100 光谱滤光片","description":"\u003cp\u003e\u003cstrong\u003e星分析仪 100\u003c\/strong\u003e\u003c\/p\u003e\n\n \u003cp\u003e自 2005 年推出以来，Star Analyser 100 已将全球数千名业余天文学家带入了迷人的光谱学领域。在此期间，业余天文学家使用的设备不断发展，更大口径的望远镜、更大的相机传感器和紧密耦合的滤光轮变得越来越普遍。\u003c\/p\u003e\n\n\u003cp\u003e对于大多数用户来说，SA100 有望继续成为首选型号，特别是对于那些使用带有小型传感器的相机的用户来说，例如将 SA100 安装在相机机鼻托上即可获得最佳性能。\u003c\/p\u003e\n\n\u003cp\u003e专业天文学家经常利用光谱的力量来揭示宇宙的秘密。现在，STAR ANALYSER 可以通过这款简单的望远镜附件以实惠的价格为业余摄影者提供同样的功能。\u003c\/p\u003e\n\n\u003cp\u003e使用方式与传统的 1.25 英寸滤镜类似，它是当今低成本天文成像相机、网络摄像头和摄像机的理想配件。\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003e\u003ca href=\"\/wp-content\/uploads\/2016\/10\/SA_100_Instructions.pdf\"\u003eSA 100 说明\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Paton Hawksley","offers":[{"title":"Default Title","offer_id":42045227237445,"sku":"SA100","price":239.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/star-analyser-100-spectroscopy-filter-421430.jpg?v=1731541084"},{"product_id":"zwo-ir-cut-filter-2-inch","title":"ZWO 红外截止滤光片 2 英寸","description":"\u003cp\u003e\u003cspan style=\"font-size: 14.4px;\"\u003eZWO 2 英寸红外截止滤光片适用于带 AR 保护窗的彩色相机。\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e ZWO 2 英寸红外截止滤光片可阻挡红外光到达 CCD 或 CMOS 相机的传感器或昂贵的 H-alpha 滤光片。成像时，添加这个简单且便宜的配件将产生更清晰的图像，而进行太阳工作时，红外截止滤光片将保护 H-alpha 滤光片免受红外辐射的破坏性影响。\u003c\/p\u003e\n\n \u003cp\u003e红外线或红外光是人眼看不见的，因此，尽管大多数望远镜不是为聚焦红外光而设计的，但当您目视使用望远镜时，红外光并不重要。但是，当您将相机添加到组合中时，情况就完全不同了！与人眼不同，硅传感器对光谱中红外部分的光非常敏感，这是一个问题，因为红外图像非常模糊。这意味着，由于增加了红外层，清晰的可见光图像质量会下降。通过阻挡红外线可以轻松解决这个问题，而 ZWO IR Cut 2 英寸滤镜就可以做到这一点。\u003c\/p\u003e\n\n\u003cp\u003e ZWO IR Cut 滤镜安装在一个 2 英寸的盒子里，有内部螺纹，因此您可以将滤镜堆叠在一起。滤镜配有一个保护性塑料盒。\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003e\u003cimg class=\"size-full wp-image-37361 alignright\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ZWOIR-Window-graph1.jpg\" alt=\"\" width=\"464\" height=\"263\"\u003e技术参数：\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e名称：红外截止滤光片\u003c\/p\u003e\n\n\u003cp\u003e尺寸：2英寸\u003c\/p\u003e\n\n\u003cp\u003e厚度：5mm+2mm（螺纹）\u003c\/p\u003e\n\n\u003cp\u003e螺纹：M48*0.75外螺纹\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42045231333445,"sku":"IRCUT2","price":79.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ir-cut-filter-2-inch-204757.jpg?v=1731541428"},{"product_id":"star-analyser-200","title":"Star Analyser 200 光谱滤光片","description":"\u003cp\u003e\u003cspan style=\"font-size: 120%\"\u003e\u003cstrong\u003e星分析仪 200\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e自 2005 年推出以来，Star Analyser 100 已将全球数千名业余天文学家带入了迷人的光谱学领域。在此期间，业余天文学家使用的设备不断发展，更大口径的望远镜、更大的相机传感器和紧密耦合的滤光轮变得越来越普遍。Star Analyser 200 型号就是为这些用户开发的。\u003c\/p\u003e\n\n\u003cp\u003e采用与 SA100 相同的 Paton Hawksley 高效闪耀衍射光栅技术，但线密度是其两倍。SA200 专为难以实现 SA100 所需的最佳间距的应​​用而设计。与 SA100 相比，SA200 以一半的间距提供相同的光谱长度。\u003c\/p\u003e","brand":"Paton Hawksley","offers":[{"title":"Default Title","offer_id":42045232939077,"sku":"STAR200-F","price":275.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/star-analyser-200-spectroscopy-filter-126588.jpg?v=1731541084"},{"product_id":"zwo-ir-cut-filter-1-25","title":"ZWO 红外截止滤光片 1.25","description":"\u003ch3\u003e ZWO 1.25 英寸 IR UV CUT 滤镜适用于带有 AR 保护窗的彩色相机。\u003c\/h3\u003e\n\n\u003cp\u003e ZWO 红外截止滤光片 1.25 可阻止红外光到达 CCD 或 CMOS 相机的传感器或昂贵的 H-alpha 滤光片。成像时，添加这个简单且便宜的配件将产生更清晰的图像，而进行太阳工作时，红外截止滤光片将保护 H-alpha 滤光片免受红外辐射的破坏性影响。\u003c\/p\u003e\n\n \u003cp\u003e红外线或红外光是人眼无法看见的，因此，尽管大多数望远镜的设计并不是为了聚焦红外光，但当您目视使用望远镜时，红外光并不重要。但是，当您将相机添加到组合中时，情况就完全不同了！与人眼不同，硅传感器对光谱中红外部分的光非常敏感，这是一个问题，因为红外图像非常模糊。这意味着，由于增加了红外层，清晰的可见光图像质量会下降。通过阻挡红外线可以轻松解决这个问题，而 ZWO IR Cu 滤镜 1.25 就可以做到这一点。\u003c\/p\u003e\n\n\u003cp\u003e ZWO IR Cut 滤镜安装在 1.25 英寸的盒子中，并具有内部螺纹，因此您可以将滤镜堆叠在一起。该滤镜配有保护性塑料盒。 \u003cimg class=\"size-full wp-image-37361 alignleft\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/ZWOIR-Window-graph1.jpg\" alt=\"\" width=\"464\" height=\"263\"\u003e\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":42045235429445,"sku":"ZWO-IRCUT125","price":39.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/zwo-ir-cut-filter-125-960704.jpg?v=1731541428"},{"product_id":"optolong-variable-polarising-filter","title":"Optolong variable polarising filter","description":"\u003cp\u003eAdjust the brightness level of the Moon, Venus, and other bright objects with the Optolong Variable Polarizer. A standard Moon Filter is similar to a pair of sunglasses. They work fine, but sometimes the scene is too dark or too bright, and there’s not a lot you can do about it. A variable polarizing filter is much more flexible than a Moon filter. It allows you to set the percentage of attenuation by turning the top section of the two-piece filter. Simply attach the 2\" threaded filter to a like-sized eyepiece or Astro accessory barrel, and then slowly rotate the top half of the filter—it turns 360°—to achieve the results you desire.\u003c\/p\u003e\n\u003cp\u003eThe Optolong Variable Polarizing Filter also works great to cut brightness when you are using your telescope for terrestrial observations or photography. If you have ever done photography through a SLR or DSLR camera, you may have already been introduced to the qualities of a polarizing filter, since it is a very popular accessory for polarizing the light and making the sky appear bluer. You will especially appreciate a polarizing filter when viewing over water or photographing a scene that includes a river or body of water. Simply turn the filter until you achieve the most glare-free results—you will really see the difference.\u003c\/p\u003e\n\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" width=\"378\"\u003e\n\u003ccolgroup\u003e\n\u003ccol width=\"132\"\u003e\n\u003ccol width=\"123\" span=\"2\"\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" width=\"132\"\u003e\u003c\/td\u003e\n\u003ctd class=\"xl63\" width=\"123\"\u003e1.25 inch\u003c\/td\u003e\n\u003ctd class=\"xl63\" width=\"123\"\u003e2 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl63\"\u003eBrand\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003eOptolong\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003eOptolong\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl63\"\u003eType\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003eVariable Polarizing\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003eVariable Polarizing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl63\"\u003eSubstrate Thickness\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2mm\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e2mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\"\u003e\u003cspan\u003eClear Aperture\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003e26mm\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003e44mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl63\"\u003eSurface Quality\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003e60\/40\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003e60\/41\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl63\"\u003eSurface parallelism\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1\/4λ\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/4λ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl63\"\u003eParallelism\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003e30\"\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003e30\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl63\"\u003eThread\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eM28.5*0.6\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eM48*0.75\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr height=\"20\"\u003e\n\u003ctd height=\"20\" class=\"xl63\"\u003eSingle Thread\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003eYes\u003c\/td\u003e\n\u003ctd class=\"xl63\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Optolong","offers":[{"title":"1.25 inch","offer_id":42151659831365,"sku":"12501","price":65.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch","offer_id":42151659864133,"sku":"12502","price":75.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/optolong-variable-polarising-filter-2-inch-237545.jpg?v=1731540834"},{"product_id":"astronomik-l-1-uv-ir-filter","title":"Astronomik L-1 UV-IR Block Filter","description":"\u003cp\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003eThe Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eTo give you all the tools to gather the best data possible \u003c\/span\u003e\u003cstrong\u003ewe have expanded our line of Luminance filters\u003c\/strong\u003e\u003cspan\u003e: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLike all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eAdditional note for observers working under light polluted skies:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/AlleLxFilter_V2.jpg?v=1731712853\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156303122501,"sku":"8h00oz","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156303155269,"sku":"8h00pk","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156303188037,"sku":"8h00sj","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156303220805,"sku":"8h00mv","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156303253573,"sku":"8h00su","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156303286341,"sku":"8h11ge","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156303319109,"sku":"8h00t3","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156303351877,"sku":"8h00xr","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156303384645,"sku":"8h11c3","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156303417413,"sku":"8h11kz","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156303450181,"sku":"8h11fa","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156303482949,"sku":"8h00rn","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156303515717,"sku":"8h00ry","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156303548485,"sku":"8h00pv","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156303581253,"sku":"8h00qg","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156303614021,"sku":"8h00qr","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156303646789,"sku":"8h00up","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156303679557,"sku":"8h00uq","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156303712325,"sku":"8h00ur","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156303745093,"sku":"8h00us","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156303777861,"sku":"8h00ut","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156303810629,"sku":"8h00uu","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156303843397,"sku":"8h00uv","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156303876165,"sku":"8h00uw","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156303908933,"sku":"8h00o4","price":115.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156303941701,"sku":"8h11br","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156303974469,"sku":"8h00rc","price":280.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_L-1-UV-IR-Block_1_25-Inch_73e2f4a3-2c3c-4cb8-b262-e41dbc457f2b.jpg?v=1731714012"},{"product_id":"astronomik-l-2-uv-ir-block-filter","title":"Astronomik L-2 UV-IR Block Filter","description":"\u003cp\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003eThe Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eTo give you all the tools to gather the best data possible \u003c\/span\u003e\u003cstrong\u003ewe have expanded our line of Luminance filters\u003c\/strong\u003e\u003cspan\u003e: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLike all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eAdditional note for observers working under light polluted skies:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/AlleLxFilter_V2.jpg?v=1731712853\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156307513413,"sku":"8h00pa","price":125.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156307546181,"sku":"8h00pl","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156307578949,"sku":"8h00sk","price":160.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156307611717,"sku":"8h00mw","price":180.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156307644485,"sku":"8h00sv","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156307677253,"sku":"8h11gf","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156307710021,"sku":"8h00t4","price":180.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156307742789,"sku":"8h00xs","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156307775557,"sku":"8h11c4","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156307808325,"sku":"8h11l0","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156307841093,"sku":"8h11fb","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156307873861,"sku":"8h00ro","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156307906629,"sku":"8h00rz","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156307939397,"sku":"8h00pw","price":145.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156307972165,"sku":"8h00qh","price":160.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156308004933,"sku":"8h00qs","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156308037701,"sku":"8h00ux","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156308070469,"sku":"8h00uy","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156308103237,"sku":"8h00uz","price":410.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156308136005,"sku":"8h00v0","price":410.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156308168773,"sku":"8h00v1","price":425.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156308201541,"sku":"8h00v2","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156308234309,"sku":"8h00v3","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156308267077,"sku":"8h00v4","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156308299845,"sku":"8h00o5","price":110.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156308332613,"sku":"8h11bs","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156308365381,"sku":"8h00rd","price":225.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_L-2-UV-IR-Block_1_25-Inch.jpg?v=1731714320"},{"product_id":"astronomik-l-3-uv-ir-block-filter","title":"Astronomik L-3 UV-IR Block Filter","description":"\u003cp\u003eAstronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003eThe Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan\u003eTo give you all the tools to gather the best data possible \u003c\/span\u003e\u003cstrong\u003ewe have expanded our line of Luminance filters\u003c\/strong\u003e\u003cspan\u003e: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eDepending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eLike all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003e\u003cstrong\u003eAdditional note for observers working under light polluted skies:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eIf your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/AlleLxFilter_V2.jpg?v=1731712853\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astronomik","offers":[{"title":"1.25 inch (M28\/5)","offer_id":42156310593605,"sku":"8h00pb","price":140.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch (M48)","offer_id":42156310626373,"sku":"8h00pm","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS APS-C Clip","offer_id":42156310659141,"sku":"8h00sl","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"Cannon XT EOS APS-C Clip","offer_id":42156310691909,"sku":"8h00mx","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS XL Clip","offer_id":42156310724677,"sku":"8h00sw","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS R XL Clip","offer_id":42156310757445,"sku":"8h11gg","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Canon EOS M Clip","offer_id":42156310790213,"sku":"8h00t5","price":195.0,"currency_code":"AUD","in_stock":true},{"title":"Sony alpha 7 Clip","offer_id":42156310822981,"sku":"8h00xt","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon XL Clip","offer_id":42156310855749,"sku":"8h11c5","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"Nikon Z XL Clip","offer_id":42156310888517,"sku":"8h11l1","price":265.0,"currency_code":"AUD","in_stock":true},{"title":"Pentax K-1 Clip","offer_id":42156310921285,"sku":"8h11fc","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"T-Mount (M42x075)","offer_id":42156310954053,"sku":"8h00rp","price":210.0,"currency_code":"AUD","in_stock":true},{"title":"SC Rear Cell (2\" \/ 24TPI)","offer_id":42156310986821,"sku":"8h00sa","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"31mm","offer_id":42156311019589,"sku":"8h00px","price":150.0,"currency_code":"AUD","in_stock":true},{"title":"36mm","offer_id":42156311052357,"sku":"8h00qi","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50mm","offer_id":42156311085125,"sku":"8h00qt","price":225.0,"currency_code":"AUD","in_stock":true},{"title":"M49","offer_id":42156311117893,"sku":"8h00v5","price":240.0,"currency_code":"AUD","in_stock":true},{"title":"M52","offer_id":42156311150661,"sku":"8h00v6","price":250.0,"currency_code":"AUD","in_stock":true},{"title":"M55","offer_id":42156311183429,"sku":"8h00v7","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M58","offer_id":42156311216197,"sku":"8h00v8","price":440.0,"currency_code":"AUD","in_stock":true},{"title":"M62","offer_id":42156311248965,"sku":"8h00v9","price":450.0,"currency_code":"AUD","in_stock":true},{"title":"M67","offer_id":42156311281733,"sku":"8h00va","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M72","offer_id":42156311314501,"sku":"8h00vb","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"M77","offer_id":42156311347269,"sku":"8h00vc","price":480.0,"currency_code":"AUD","in_stock":true},{"title":"27mm Unmounted","offer_id":42156311380037,"sku":"8h00o6","price":115.0,"currency_code":"AUD","in_stock":true},{"title":"42mm Unmounted","offer_id":42156311412805,"sku":"8h11bt","price":165.0,"currency_code":"AUD","in_stock":true},{"title":"50 x 50mm Unmounted","offer_id":42156311445573,"sku":"8h00re","price":280.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Astronomik_L-3-UV-IR-Block_1_25-Inch.jpg?v=1731715062"},{"product_id":"astronomik-dark-filter","title":"Astronomik Dark Filter","description":"\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDark Filter 1.25 inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur 1,25\" (M28,5) filters fit perfectly in all 1,25\" (M28,5) filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.\u003c\/p\u003e\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDark Filter 2 inch\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur 2\" (M48) filters fit perfectly in all 2\" (M48) filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik.\u003c\/p\u003e\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDark filter 31mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur 31mm filters fit perfectly in all 31mm filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik. The design with protective ring and blackened filter edges prevents stray light, the filters are mechanically protected and easier to handle.\u003c\/p\u003e\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. It does not change the optical performance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003eDark filter 36mm\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eOur 36mm filters fit perfectly in all 36mm filter wheels of the brands ZWO, QHY, QSI, Starlight Xpress, SBIG, Moravian and Atik. The design with protective ring and blackened filter edges prevents stray light, the filters are mechanically protected and easier to handle.\u003c\/p\u003e\n\u003cp\u003eThe orientation of the filter in the filter wheel does not matter. 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This is important because unfiltered CCD and CMOS sensors are extremely susceptible to UV and IR rays just outside the visible spectrum that can have a very negative impact on image quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eMain Use and Performance\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSuitable for color CMOS and CCD cameras and modified DSLRs.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUse with monochrome CCD for astrophotography.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAvailable to assist in focusing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAct as an outstanding dust shield, which prevents the possibility of dust settling on the lens during long time exposure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003e\u003cu\u003eWARNING: \u003c\/u\u003e\u003c\/strong\u003eThe filters of Optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH OPTOLONG FILTER. You would be BLIND if you fail to observe the warning.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/UV_IR_cut.jpg?v=1741665611\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Optolong","offers":[{"title":"1.25 inch Mounted","offer_id":42500075978821,"sku":"10601","price":80.0,"currency_code":"AUD","in_stock":true},{"title":"2 inch Mounted","offer_id":42500076011589,"sku":"10602","price":120.0,"currency_code":"AUD","in_stock":true},{"title":"31mm Unmounted","offer_id":42500076044357,"sku":"10603","price":80.0,"currency_code":"AUD","in_stock":true},{"title":"36mm Unmounted","offer_id":42500076077125,"sku":"10604","price":100.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/6673\/1845\/files\/Optolonguv-ircut.jpg?v=1741665521"}],"url":"https:\/\/bintel.com.au\/zh\/collections\/utility-filters.oembed","provider":"The Binocular and Telescope Shop","version":"1.0","type":"link"}