OUT OF MIND
Would you like to react to this message? Create an account in a few clicks or log in to continue.
Latest topics
» Is it possible to apply positive + in favor Newton III Motion Law as a dynamic system in a motor engine
Webb’s Camera Captures Its First Photons of Starlight EmptySat Mar 23, 2024 11:33 pm by globalturbo

» Meta 1 Coin Scam Update - Robert Dunlop Arrested
Webb’s Camera Captures Its First Photons of Starlight EmptySat Mar 23, 2024 12:14 am by RamblerNash

» As We Navigate Debs Passing
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Jan 08, 2024 6:18 pm by Ponee

» 10/7 — Much More Dangerous & Diabolical Than Anyone Knows
Webb’s Camera Captures Its First Photons of Starlight EmptyThu Nov 02, 2023 8:30 pm by KennyL

» Sundays and Deb.....
Webb’s Camera Captures Its First Photons of Starlight EmptySun Oct 01, 2023 9:11 pm by NanneeRose

» African Official Exposes Bill Gates’ Depopulation Agenda: ‘My Country Is Not Your Laboratory’
Webb’s Camera Captures Its First Photons of Starlight EmptyThu Sep 21, 2023 4:39 am by NanneeRose

» DEBS HEALTH
Webb’s Camera Captures Its First Photons of Starlight EmptySun Sep 03, 2023 10:23 am by ANENRO

» Attorney Reveals the “Exculpatory” Evidence Jack Smith Possesses that Exonerates President Trump
Webb’s Camera Captures Its First Photons of Starlight EmptyTue Aug 29, 2023 10:48 am by ANENRO

» Update From Site Owner to Members & Guests
Webb’s Camera Captures Its First Photons of Starlight EmptyTue Aug 29, 2023 10:47 am by ANENRO

» New global internet censorship began today
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 21, 2023 9:25 am by NanneeRose

» Alienated from reality
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 4:29 pm by PurpleSkyz

» Why does Russia now believe that Covid-19 was a US-created bioweapon?
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 4:27 pm by PurpleSkyz

»  Man reports history of interaction with seemingly intelligent orbs
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 3:34 pm by PurpleSkyz

» Western reactions to the controversial Benin Bronzes
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 3:29 pm by PurpleSkyz

» India unveils first images from Moon mission
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 3:27 pm by PurpleSkyz

» Scientists achieve nuclear fusion net energy gain for second time
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 3:25 pm by PurpleSkyz

» Putin Signals 5G Ban
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 3:07 pm by PurpleSkyz

» “Texas Student Dies in Car Accident — Discovers Life after Death”
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 3:05 pm by PurpleSkyz

» The hidden history taught by secret societies
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 3:03 pm by PurpleSkyz

» Vaccines and SIDS (Crib Death)
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 3:00 pm by PurpleSkyz

» Sun blasts out highest-energy radiation ever recorded, raising questions for solar physics
Webb’s Camera Captures Its First Photons of Starlight EmptyMon Aug 07, 2023 2:29 pm by PurpleSkyz

» Why you should be eating more porcini mushrooms
Webb’s Camera Captures Its First Photons of Starlight EmptySun Aug 06, 2023 10:38 am by PurpleSkyz


You are not connected. Please login or register

Webb’s Camera Captures Its First Photons of Starlight

Go down  Message [Page 1 of 1]

PurpleSkyz

PurpleSkyz
Admin

Webb’s Camera Captures Its First Photons of Starlight

 Feb 8, 2022 by  News Staff / Source


On February 3, 2022, astronomers saw the first photons of starlight that traveled through the NASA/ESA/CSA James Webb Space Telescope and were detected by its Near Infrared Camera (NIRCam) instrument. The detection marks the first of many steps to capture images that are at first unfocused and use them to slowly fine-tune the Webb telescope. This is the beginning of the three-month process of aligning the telescope, but so far the initial results match expectations and simulations.


Webb’s Camera Captures Its First Photons of Starlight Image_10404_2-Webb

An artist’s impression of the James Webb Space Telescope. Image credit: ESA.
“With deployment of the mirror segments now complete, and the instruments turned on, we’ve begun the numerous steps required to prepare and calibrate the telescope to do its job,” said Dr. Lee Feinberg from NASA’s Goddard Space Flight Center, Dr. Scott Acton and Dr. Chanda Walker of Ball Aerospace, and their colleagues from the Webb team.
The researchers will now use the NIRCam data to progressively align the Webb telescope.
They developed and demonstrated the algorithms using a 1/6th scale model telescope testbed.
They’ve simulated and rehearsed the process many times and are now ready to do this with Webb.
The process will take place in seven phases over the next three months, culminating in a fully aligned telescope ready for instrument commissioning.
The images taken by Webb during this period will not be ‘pretty’ images like the new views of the Universe the telescope will unveil later this summer.
They strictly serve the purpose of preparing the telescope for science.
To work together as a single mirror, the telescope’s 18 primary mirror segments need to match each other to a fraction of a wavelength of light — approximately 50 nm.
To put this in perspective, if the Webb primary mirror were the size of the United States, each segment would be the size of Texas, and the team would need to line the height of those Texas-sized segments up with each other to an accuracy of about 3.8 cm (1.5 inches).
“The telescope commissioning process will take much longer than previous space telescopes because Webb’s primary mirror consists of 18 individual mirror segments that need to work together as a single high-precision optical surface,” the scientists said.
“The steps in the commissioning process include: segment image identification, segment alignment, image stacking, coarse phasing, fine phasing, telescope alignment over instrument fields of view, iterate alignment for final correction.”
_____
This article is based on text provided by the National Aeronautics and Space Administration.

http://www.sci-news.com/astronomy/webbs-first-photons-starlight-10531.html?utm_source=feedburner&utm_medium=email
Thanks to: http://www.sci-news.com

Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum