Want to make the most of the partial eclipse on March 29? We have rounded up the best deals on the equipment you need to ...

These are narrowband filters, rejecting most of the light coming through the telescope. They're designed to transmit only certain, narrow wavelengths of light, which are associated with the ...

But studying the H-line is a non-trivial task unless you know how to cascade low-noise amplifiers and filters to use an SDR for radio astronomy. Because the universe is mostly made of hydrogen ...

Publications of the Astronomical Society of the Pacific, Vol. 116, No. 822 (August 2004), pp. 729-733 (5 pages) ABSTRACT The most commonly used narrowband filters of the Advanced Camera for Surveys ...