A research team from the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy of Sciences has uncovered the origins of double-peaked narrow emission-line characteristics in galactic centers ...

Publications of the Astronomical Society of the Pacific, Vol. 125, No. 930 (August 2013), pp. 879-888 (10 pages) ABSTRACT.We present optical spectroscopy late in a deep minimum for the quintessential ...

Publications of the Astronomical Society of the Pacific, Vol. 121, No. 875 (2009 January), pp. 59-72 (14 pages) ABSTRACT.The methods and techniques for the slitless spectroscopy software aXe, which ...

Visual demonstration of the performance of the diffraction grating. The zeroth order transmission refers to light that goes straight through the grating without undergoing diffraction (which should be ...

Alluxa, Inc., a global leader in high-performance optical coatings, filters, and thin-film deposition technologies, announces the development of two groundbreaking Hydrogen Alpha (H-alpha) Emission ...

Gamma-ray spectroscopy remains a cornerstone technique for the identification and quantification of radioactive nuclides. Traditionally, precise calibration and careful spectral analysis have been ...

Fine-toothed: the optical spectrum of two laser frequency combs A new type of laser frequency comb (LFC) has been developed by scientists in Europe. The prototype device could lead to improvements in ...

At the dawn of the universe, there was only hydrogen and helium. These elements made up all the galaxies and all the stars. But stars fuse hydrogen and helium into heavier elements, and large stars ...

Researchers developed a new type of spectral shaper that can shape the spectrum of 10,000 lines of light from a laser frequency comb. The image shows the spatial light modulator they used with a 2D ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Life for the 19th-century astronomer was kind of monotonous, 200 years after Galileo's ...