File:Deep Impact MRI.jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Deep_Impact_MRI.jpg (499 × 377 pixels, file size: 48 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents
  • Deep Impact Medium Resolution Instrument (MRI)
  • description: The Medium Resolution Instrument (MRI) is designed to provide visible images with a wider field of view than the High Resolution Instrument (HRI) to provide science context to the observations, navigation, and to act as a backup to HRI. The MRI consists of a telescope, filter wheel, and Charged-Couple Device (CCD) camera. The telescope is of Cassegrain design, f/17.5 with a 12 cm diameter aperture and a 2.1 m focal length. It houses light baffles and zerodur glass primary and secondary mirrors. The filter wheel has two clear apertures and eight filters. The filters include some of the same filters used on the HRI and also have filters designed to isolate CN and C2. The camera uses a 1024 x 1024 split frame transfer CCD. The field of view is 10 milliradians (0.587 degrees, or 10 microradians/pixel) allowing a surface resolution of 7 meters at 700 km. The full field of view is expected to be 1.2 times larger than the comet nucleus at closest approach, so the entire nucleus will be visible by the instrument throughout the encounter. Full frame readout time is 1.8 seconds, faster readout of centered sub-frames is also possible. The impactor also carries an imaging device, the Impactor targeting Sensor (ITS) which is identical to the MRI except that it doesn't have a filter wheel. It will be able to take images with a resolution of 0.2 meters/pixel at a distance of 20 km.


Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
Warnings:

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current12:03, 1 July 2005Thumbnail for version as of 12:03, 1 July 2005499 × 377 (48 KB)Bricktop (talk | contribs)

You cannot overwrite this file.

The following page uses this file:

File usage on other wikis

The following other wikis use this file:

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Deep_Impact_MRI.jpg&oldid=911186814"