Please login in order to download photos in full size
Please note to download premium images you also need to join as a free member..
You can also save the photos without the registration - but only in small and average sizes, and some of them will have the site's watermark. Please simply click your right mouse button and save the image.
Please login in order to like photos
If you are not registered, please register for free:
Sorry, non-members can download up to 100 full-size photos per month.
It looks like you have used up your limit.
Join as a member today for FREE! - and download the images without limitations:
You can also save the images without the membership - but only in small and average sizes, and some of them may have the site's watermark. Please simply click your right mouse button and save the image.
- 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.
|This file is in the public domain because it was 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.)
All photos in average size can be saved by everyone without registration (by right-clicking) - and all photos can be downloaded in full-size and without the big watermark by members (by left-clicking) (registration and free membership required).
While the copyright and licensing information supplied for each photo is believed to be accurate, Free-Photos.biz does not provide any warranty regarding the copyright status or correctness of licensing terms. If you decide to reuse the images from Free-Photos.biz, you should verify the copyright status of each image just as you would when obtaining images from other sources.
The use of depictions of living or deceased persons may be restricted in some jurisdictions by laws regarding personality rights. Such images are exhibited at Free-Photos.biz as works of art that serve higher artistic interests.