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Posts Tagged ‘James Webb Space Telescope’

07/22/2021 – Ephemeris – Hubble’s trouble is fixed

July 22, 2021 Comments off

This is Bob Moler with Ephemeris for Thursday, July 22nd. Today the Sun will be up for 15 hours even, setting at 9:19, and it will rise tomorrow at 6:19. The Moon, 1 day before full, will set at 5:18 tomorrow morning.

Folks at NASA are breathing a sigh of relief. After a month when one of its computers failed in the Hubble Space Telescope, ground controllers were able to diagnose that the problem was actually in the computer and not somewhere else. They switched to a backup computer. This wasn’t the main computer, but the one that ran the instruments. Hubble resumed operations this past Sunday. Hubble’s more or less replacement, the James Webb Space Telescope is many years overdue to be launched, and is expected to be launched later this year by the European Space Agency from French Guiana, as their contribution to the project. The Webb telescope operates in the infrared, while Hubble operates mostly in visible light.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan (EDT, UT – 4 hr). They may be different for your location.

Addendum

The Hubble Space Telescope

The Hubble Space Telescope after its last servicing mission. Credit: NASA.

 

Full scale model of the JWST at Goddard Space Flight Center

Full scale model of the James Webb Space Telescope at Goddard Space Flight Center. Note its scale with the people in front of it.

03/18/2021 – Ephemeris – The aging Hubble Space Telescope survived its latest glitch

March 18, 2021 Comments off

This is Bob Moler with Ephemeris for Thursday, March 18th. Today the Sun will be up for 12 hours and 4 minutes, setting at 7:53, and it will rise tomorrow at 7:47. The Moon, 3 days before first quarter, will set at 1:21 tomorrow morning.

On Sunday the 7th the Hubble Space Telescope, arguably the most famous telescope there is entered safe mode. Whenever a spacecraft finds an unexpected problem it stops what it is doing, orients itself, so its solar panels face the Sun if it can. It may or may not phone home. And waits for instructions. The last time Hubble experienced a glitch that forced a safe mode was 2018. Then it took 3 weeks to get it back to normal operations. This time it was 4 days. However, the ground controllers are still checking out one of its cameras, while the others are working again. Hubble is over 30 years old. It’s replacement, the James Webb Space Telescope is expected to finally be launched this October on the European Space Agency’s Ariane 5 rocket.

The astronomical event times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.

Addendum

The Hubble Space Telescope

The Hubble Space Telescope after a servicing mission. Credit: NASA.

Full scale model of the JWST at Goddard Space Flight Center

Full scale model of the James Webb Space Telescope at Goddard Space Flight Center. Note its scale with the people in front of it.

I’ll be covering the James Webb Space Telescope in more detail as we count down to its launch.

07/12/11 – Ephemeris – Dim prospects for the James Webb Space Telescope

July 12, 2011 Comments off

Tuesday, July 12th.  Today the sun will be up for 15 hours and 18 minutes, setting at 9:27.   The moon, 3 days before full, will set at 4:24 tomorrow morning.  Tomorrow the sun will rise at 6:09.

The US House Appropriation Committee is planning to cancel the Jame Webb Space Telescope.  This follow on to the wildly successful Hubble Space Telescope, is, like its predecessor over budget and behind schedule.  The Webb will gather over 6 times the light as the Hubble, and operate in the infrared where the action is in astronomy now a days.  As it is currently funded the Webb telescope might not be launched by 2018.  They are cutting NASA’s budget by 1.6 billion dollars and want to mandate instead the development of a heavy lift rocket, for which there is no immediate use.  As it is the commercial SpaceX company supposedly can upgrade their current Falcon 9 rocket to a Falcon Heavy quicker and cheaper than NASA can produce their heavy rocket.

* Times are for the Traverse City/Interlochen area of Michigan.  They may be different for your location.

Addendum

Artist's view of the James Webb Space Tellescope.  Courtesy NASA.

Artist's view of the James Webb Space Tellescope. Courtesy NASA.

Artist's conception of the Falcon Heavy rocket.  Courtesy SpaceX.

Artist's conception of the Falcon Heavy rocket. Courtesy SpaceX.