The European Southern Observatory’s (ESO) Very Large Telescope (VLT) stands beneath a star-studded sky illuminated by a ...

The results are in line with theory — but the key to an accurate measurement was understanding how dusty the galaxy is.

(1) Different types of electromagnetic radiation such as radio waves, microwaves, visible light, and x-rays are associated with specific wavelengths. A spectrophotometer is an instrument that performs ...

The dust particles, though very tiny, are also very reflective. Light from the Sun can reflect off the zodiacal dust and can ...

Zodiacal light radiates across the optical spectrum down to long-wavelength infrared. It’s visible from Earth—though only in very dark sky destinations—as a delicate cone of light that looks ...

Description: accuracy of the wave plate. Waveplate Applications You can use the Berek’s variable waveplate as a quarter-wave plate, a half-wave plate, or any arbitrary waveplate at any wavelength ...

Sub-wavelength optics is the study of light on a spatial scale smaller than its wavelength. Conventionally, the minimum length scale on which a beam of light can operate is equal to half its ...

Clear and easy to use, this guide shows you how to make successful and valuable observations and records of comets, asteroids, meteors and the zodiacal light. For each topic the historical background ...