What does WFPC2 stand for?


What does WFPC2 stand for?

Acronym. Definition. WFPC2. Wide Field and Planetary Camera 2.

What is HST imaging?

STIS is a versatile imaging spectrograph, providing spatially resolved spectroscopy from 1150 to 10300 Å at low to medium spectral resolution, high spatial resolution echelle spectroscopy in the UV, solar-blind imaging in the UV, time-tagging of photons for high time resolution in the UV, and direct and coronagraphic …

Who made the lens for the Hubble telescope?

Hubble’s primary mirror was built by what was then called Perkin-Elmer Corporation, in Danbury, Connecticut. Once Hubble began returning images that were less clear than expected, NASA undertook an investigation to diagnose the problem.

Which of the following missions is scheduled to replace the Hubble Space Telescope?

JWST was launched in December 2021 on a European Space Agency (ESA) Ariane 5 rocket from Kourou, French Guiana, and as of June 2022 is undergoing testing and alignment. Once operational, expected about the end of June 2022, JWST is intended to succeed the Hubble as NASA’s flagship mission in astrophysics.

Why did the Hubble telescope have to be repaired?

Soon after the Hubble Space Telescope was launched in 1990, images and data from its instruments revealed that its main mirror was optically flawed. It suffered from spherical aberration—not all portions of the mirror focused to the same point.

Why has the Hubble Space Telescope been so instrumental for mankind?

Hubble has helped survey galaxies that existed when the universe was only 600 million years old. Previous estimates had suggested that galaxies didn’t form until the universe was at least two billion years old. The instrument’s images have helped scientists understand how galaxies evolve.

Who repaired the HST?

In 2009, Massimino and fellow Atlantis shuttle astronaut Mike Good spent 10 hours tethered to the broken Hubble, trying to repair its imaging spectrograph—an instrument that depicts black holes and distant alien planets.

What problems did HST face?

After 31 years in space, the Hubble Space Telescope unexpectedly shut down on June 13 after suffering a problem that initially appeared to be the fault of an aging memory module. But the more NASA personnel tried to fix the issue, the more slippery it became.

Who fixed HST?

Engineering support for HST is provided by NASA and contractor personnel at the Goddard Space Flight Center in Greenbelt, Maryland, 48 km (30 mi) south of the STScI.

Will Hubble run out of fuel?

If it uses fuel doesn’t it eventually run out? There’s no fuel. It uses gyroscopes to orient itself, just like the ISS. These gyroscopes use electricity generated from the solar panels.

What flaw did the Hubble telescope have?

Shortly after the Hubble Space Telescope’s launch in 1990, operators discovered that the observatory’s primary mirror had an aberration that affected the clarity of the telescope’s early images. Hubble’s primary mirror was built by what was then called Perkin-Elmer Corporation, in Danbury, Connecticut.

How long will Hubble telescope last?

It’s currently believed that Hubble should remain operational until 2030 or 2040. The telescope’s already far-surpassed the original 15-year life expectancy, so any additional time from here on out is just icing on the cake.

Did NASA fix Hubble?

NASA finally fixed the Hubble Space Telescope after nearly five weeks without science operations. Hubble switched to backup hardware to correct the mysterious glitch that took it offline. Hubble’s age likely caused the problem. NASA hopes it still has a few more years.

Is the Hubble telescope broken?

Earlier this year, an issue with Hubble’s computer caused it to go offline for a full month. Now in November 2021, another issue has popped up. NASA’s Hubble telescope — one of the most critical tools for space exploration — is broken again.

Is Hubble telescope broken?

Is STScI part of NASA?

STScI was established in 1981 as a community-based science center that is operated for NASA by the Association of Universities for Research in Astronomy (AURA). STScI’s offices are located on the Johns Hopkins University Homewood Campus and in the Rotunda building in Baltimore, Maryland.

Will Hubble be serviced again?

Repairing, upgrading, and refueling the telescope could be performed by astronauts on China’s space station, rather than making remote repairs as NASA does now. For now, NASA says the JWST is on track for a launch readiness date no earlier than October 31, 2021.

How do I read WFPC2 data?

Data from WFPC2 are made available to observers as files in Multi-Extension FITS (MEF) format, which is directly readable by most PyRAF/IRAF/STSDAS tasks. All WFPC2 data are now available in either waivered FITS or MEF formats. The user may specify either format when retrieving that data from the HDA.

Where is the WFPC2 field of view located?

While it was in operation, the WFPC2 field of view was located at the center of the HST focal plane. The central portion of the f/24 beam coming from the OTA would be intercepted by a steerable pick-off mirror attached to the WFPC2 and diverted through an open port entry into the instrument.

Why does my WFPC2 have a streak on the screen?

There are about 30 pixels in WFPC2 that are “charge traps” which do not transfer charge efficiently during readout, producing artifacts that are often quite noticeable. Typically, charge is delayed into successive pixels, producing a streak above the defective pixel.

What is the spatial variation of photometry at different apertures?

For intermediate and large apertures (r > 4 pixels), the spatial variation of photometry is less than 1%, but it becomes significant for small apertures (r < 3 pixels). It is unnecessary to decouple the effects of imperfect CTE and charge diffusion on the field dependence of photometry.