After more than 20 years of construction, the James Webb Space Telescope (JWST) is complete and, following in-depth testing, the largest-ever space telescope is expected to launch within two years, NASA officials announced today (Nov. 2).
NASA Administrator Charles Bolden hosted a news conference to announce the milestone this morning at the agency’s Goddard Space Flight Center in Maryland, overlooking the 18 large mirrors that will collect infrared light, sheltered behind a tennis-court-size sun shield. JWST is considered the successor to NASA’s iconic Hubble Space Telescope.
“Today, we’re celebrating the fact that our telescope is finished, and we’re about to prove that it works,” said John Mather, an astrophysicist and senior project scientist for the telescope. “We’ve done two decades of innovation and hard work, and this is the result — we’re opening up a whole new territory of astronomy.” [How NASA’s James Webb Space Telescope Works (Infographic)]
READ FULL ARTICLE
AAS-300 3-way Antennasplitter up to 300 MHz The AAS-300 antenna splitter can distribute the signal of a receiving antenna to up to 3 recipients. About... Read more
by Vinod Es “Well after a long time I am back with a new project ! This is an attempt to build an Antenna rotator controller using Arduino Mega... Read more
Gordon West (WB6NOA) talks about HF mobile antennas, and getting the feed-point impedance at 50 Ohms. Also covered, is a recommendation on the type of... Read more
Alex, PY1AHD, demonstrates how easy and FAST it is to set up his AlexLoop Read more
UPDATE 12/19/20114 0704Z Visit for complete information and photos : http://qrznow.com/icom-ic-7851-new-photos-manual/ Icom IC-7851 HF/6m Amate... Read more
Anytone AT-6666 All-Mode 10 Meter Mobile 60 watts SSB – 360 Memories CTCSS / DCS Option Included Programming Cable Included General Speci... Read more
Overview JUMA PA1000 is a very light weight solid state 1 kW linear amplifier for HF and 6 meter bands. JUMA PA1000 is using a most modern LD... Read more
GENERAL DESCRIPTION OF THE OM4000 HF POWER AMPLIFIER The linear amplifier OM4000 HF is designed for all short wave amateur bands from 1.8 till... Read more