{"product_id":"zwo-1-25-oiii-7nm-narrowband-filter-oiii7nm125","title":"ZWO 1.25\" OIII 7nm Narrowband Filter - OIII7nm125","description":"\u003cp\u003eThe ZWO narrowband OIII 7nm filter is designed for nebula observation by allowing a 7nm bandwidth of light to be centered on a wavelength of 500nm (which corresponds to OIII emission lines), and blocking out all other light.  Adding the ZWO OIII Narrowband filter to your imaging collection will help you go beyond RGB imaging and will help capture your favorite nebulas in a new light, no matter how polluted your skies may be!\u003c\/p\u003e\n\u003cp\u003eThis rendition of the ZWO OIII 7nm Filter is housed in a 1.25\" threaded metal cell and can be used in 1.25\" filter wheels or the ZWO 2\" filter drawer with a 2\" to 1.25\" filter adapter installed.  \u003c\/p\u003e\n\u003ch3\u003eHow to Use the ZWO OIII 7nm 1.25\" Filter...\u003c\/h3\u003e\n\u003cul class=\"wp-block-list\"\u003e\n\u003cli\u003eA Hubble look can be made by the combination of H-alpha, OIII-CCD and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eNarrowband imaging with SHO set (H-alpha, OIII-CCD and SII-CCD) can be done with the moon in the sky so your equipment is not sitting dormant until the next new moon.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSize: 1.25″\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eThickness: 5.5mm + 2.5mm(thread)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eGlass thickness: 1.85mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eThread: M28.5*0.6 male thread\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFWHM：7±0.5nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFine-optically polished to ensure accurate 1\/4 wavefront  over the both surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAbout 90% transmission at major OIII line 500nm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eInfrared wavelength 700-1100nm cut-off\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\u0026lt;0.1% transmission of off-band, OD3 (Optical Density)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":41368407244913,"sku":"ZWO-OIII7nm125","price":116.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/ZWO-OIII7nm_125_Filter.webp?v=1776459034","url":"https:\/\/khanscope.com\/en-fr\/products\/zwo-1-25-oiii-7nm-narrowband-filter-oiii7nm125","provider":"Khan Scope Centre","version":"1.0","type":"link"}