Started by Tank, December 29, 2015, 05:13:42 PM
Quote from: Icarus on January 12, 2022, 12:13:22 AMThe Webb telescope is by all measures, a magnificent human achievement. If it works as intended, there may be some serious kickback. Many individuals will resist learning that the Genisis tale of the Christian bible, is not an accurate account of the way that our earth began. The machine has already gotten the descriptive moniker, Golden Eye.
QuoteFollowing the completion of critical mirror alignment steps, NASA's James Webb Space Telescope team expects that Webb's optical performance will be able to meet or exceed the science goals the observatory was built to achieve.On March 11, the Webb team completed the stage of alignment known as "fine phasing." At this key stage in the commissioning of Webb's Optical Telescope Element, every optical parameter that has been checked and tested is performing at, or above, expectations. The team also found no critical issues and no measurable contamination or blockages to Webb's optical path. The observatory is able to successfully gather light from distant objects and deliver it to its instruments without issue.Although there are months to go before Webb ultimately delivers its new view of the cosmos, achieving this milestone means the team is confident that Webb's first-of-its-kind optical system is working as well as possible."More than 20 years ago, the Webb team set out to build the most powerful telescope that anyone has ever put in space and came up with an audacious optical design to meet demanding science goals," said Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate in Washington. "Today we can say that design is going to deliver."While some of the largest ground-based telescopes on Earth use segmented primary mirrors, Webb is the first telescope in space to use such a design. The 21-foot, 4-inch (6.5-meter) primary mirror – much too big to fit inside a rocket fairing – is made up of 18 hexagonal, beryllium mirror segments. It had to be folded up for launch and then unfolded in space before each mirror was adjusted – to within nanometers – to form a single mirror surface.[Continues . . .]
QuoteNASA's James Webb Space Telescope is aligned across all four of its science instruments, as seen in a previous engineering image showing the observatory's full field of view. Now, we take a closer look at that same image, focusing on Webb's coldest instrument: the Mid-Infrared Instrument, or MIRI.The MIRI test image (at 7.7 microns) shows part of the Large Magellanic Cloud. This small satellite galaxy of the Milky Way provided a dense star field to test Webb's performance.Here, a close-up of the MIRI image is compared to a past image of the same target taken with NASA's Spitzer Space Telescope's Infrared Array Camera (at 8.0 microns). The retired Spitzer telescope was one of NASA's Great Observatories and the first to provide high-resolution images of the near- and mid-infrared universe. Webb, with its significantly larger primary mirror and improved detectors, will allow us to see the infrared sky with improved clarity, enabling even more discoveries.[Continues . . .]
Quote from: Recusant on May 10, 2022, 10:58:16 PMThe GIF below shows the contrast between the previous best infrared space telescope and the infrared capabilities of the Webb telescope.Credit: NASA/ESA/CSA/STScI
Quote from: Ecurb Noselrub on July 25, 2013, 08:18:52 PMIn Asmo's grey lump, wrath and dark clouds gather force.Luxembourg trembles.