PIA07880: Tempel 1 First Op-Nav
 Target Name:  Tempel 1
 Is a satellite of:  Sol (our sun)
 Mission:  Deep Impact
 Spacecraft:  Deep Impact
 Instrument:  Impactor Targeting Sensor (ITS)
 Product Size:  872 x 714 pixels (w x h)
 Produced By:  JPL
 Full-Res TIFF:  PIA07880.tif (623.5 kB)
 Full-Res JPEG:  PIA07880.jpg (58.06 kB)

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figure 1 for PIA07880: Tempel 1 first optical navigation
Tempel 1 First Optical Navigation

On Monday, April 25, the Deep Impact spacecraft obtained its first optical navigation (Op-Nav) image of comet Tempel 1. At the time the picture was taken the distance between spacecraft and comet was 64 million kilometers (39.7 million miles) away. The exposure -- known as a "negative image" -- is used by the spacecraft team to assist in navigation and instrument calibration. The spacecraft will start imaging the comet on a regular basis in about 10 days.

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