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Photonics Spectra
Feb 2007
Optical filter manufacturer Omega Optical Inc. has launched AstroFilters, an online store for the amateur astronomy community. The product line encompasses four nebula filters: The GCE-DGM Optics galaxy contrast enhancement filter is for the observation of galaxies and Milky Way dust clouds and dark lanes; the VHT-DGM Optics very high throughput type is suitable for telescopes with 4- to 6-in. apertures; the NPB-DGM Optics narrow bandpass filter provides ultrahigh contrast for small and fainter emission and planetary nebula, and for a variety of bright nebula, especially those viewed through larger telescopes. It is complemented by the HPOIII-DGM Optics filter, which offers high transmission and narrow bandwidth.

The scientific observation of celestial radiation that has reached the vicinity of Earth, and the interpretation of these observations to determine the characteristics of the extraterrestrial bodies and phenomena that have emitted the radiation.
AstroFiltersastronomyBasic ScienceBreakthroughMediaFiltersNew MediaOmega Optical Inc.optics

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