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Optolong improved H-Alpha, OIII, SII 6.5nm narrowband filter Kit, 1.25"Optolong SHO6.5nm filter kit includes SII6.5nm, H-Alpha7nm, and OIII6.5nm narrow-band filters, generally working with astronomical monochrome cooling CCD and modified DSLR imaging in each single-channel . Corresponding with RGB channel (Ha, OIII, SII), photographers can process Hubble images by astronomical post processing software. Extra narrowband SIICCD 6.5nm filter (Sulful II for CCD) is designed for nebula observation allowing 12nm bandwidth of light centered on a wavelength of 672nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). H-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Better choice of narrowband H-alpha astrophotography filter for highest contrast and revealing subtle nebula details. Extra Narrowband OIII-CCD 6.5nm filter is designed for nebula observation allowing 6.5nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifically those produced by artificial light including mercury vapor, and both high and low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). OIII emits 495.9nm and 500.7nm and it is a blue-green colored filter. Many of images of planetary nebula and supernova remnants are taken only with H-alpha and OIII filters. They show great structural details, but have natural colors, looking like an RGB image. Features: Give you higher contrast and greater detailed viewing; Decrease background noise and improve the contrast of objects; Increase the faint nebula signal and make it to be brightness; With narrow band filters kit, you are able to process a hubble image; Through the optimization of the substrate and upgrading of coating technology, significantly improved the halo around the stars, especially in O3.
Referance Spectrum
How to read the chart? ▲The horizontal axis is the Wavelength in Nanometers(nm). ▲The vertical axis is transmission in %. ▲The GREEN line shows the transmission of the OIII6.5nm filter. The H-Alpha7nm line is shown in RED. And the SII6.5nm filter line is shown in BLUE.
IMPROVED SHO6.5nm Filters PerformanceⅠ. NGC7000- The North America Nebula © Francesco Battistella-AstroAtlas Technical Information:
Ⅱ. The Pelican Nebula © Astrodoc Ron Brecher Tekkies:
III. NGC 7000 The North America and IC 5070 The Pelican Nebulae © José Jiménez NGC 7000 The North America and IC 5070 The Pelican Nebulae
Ⅳ. Bubble Nebula | NGC 7635© Luca Fornaciari Astrophotography Bubble Nebula | NGC 7635 | Narrowband shots in Hubble Palette SHO (Sii:Ha:Oiii)
V. Fireworks in Monoceros© Terry Hancock Technical Details The Rosette Nebula (also known as Caldwell 49)This active star forming nebula lies in the Monoceros Constellation (the Unicorn) only 5,200 light-years distant. The dense cloud of hydrogen has been condensing to form new stars and is thought to be very similar to the environment that gave birth to our own Solar System. As the new stars ignite they blow off their shrouds and irradiate thier surroundings and cause the hydrogen to glow from the ionizing radiation. Like dust being blown by the wind, these newborns push the hydrogen and dust away where it collapses under gravity to accelerate the formation of yet more stars, excavating the inner region of the nebula over time.
Ⅵ. IC1795 & NGC896-The Fish Head Nebula © Francesco Battistella-AstroAtlas Technical Information:
Ⅶ. NGC6888-The Crescent Nebula © Francesco Battistella-AstroAtlas Technical Information:
About Optolong While Optolong is a relative newcomer to the astronomy industry, they are no strangers to optics and filters. Optolong is a division of Yulong Optics Company, a high tech company specializing in optical filter design and production. Their products include bandpass filters, flourescence filters, edge filters, longpass and shortpass filters, beam splitters, anti-reflection coatings, optical mirrors and, of course, astronomical filters. |
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