Difference between revisions of "October 19, 2006"

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<p>[[File:Mosswb2.jpg|mosswb2.jpg]]<br />
 
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<em>image by[http://www.stp.isas.jaxa.jp/nozomi/MIC/MIC_e.html  MIC onboard NOZOMI / ISAS]</em></p>
 
<em>image by[http://www.stp.isas.jaxa.jp/nozomi/MIC/MIC_e.html  MIC onboard NOZOMI / ISAS]</em></p>
 
<p>Making a mosaic is difficult and not even professionals with multi-million dollar spacecraft always get it right. [http://nssdc.gsfc.nasa.gov/nmc/tmp/1998-041A.html Nozomi] was an ill-fated Japanese probe launched toward Mars in 1998 but it suffered mechanical problems and solar flare damage before being abandoned into a rough two year orbit around the Sun. Nozomi made two flybys past the Moon for gravitational assists to escape Earth&#8217;s neighborhood, acquiring a handful of images of the lunar near and far sides. All the images seem not quite in focus, perhaps because the short focal length lens produced small images that need too much enlargement. Also, it appears that the compression (either on board the spacecraft or on ground) was too intense, resulting in artifacts. Nonetheless, a few of these images provide synoptic views of part of the farside that are useful for mapping. </p>
 
<p>Making a mosaic is difficult and not even professionals with multi-million dollar spacecraft always get it right. [http://nssdc.gsfc.nasa.gov/nmc/tmp/1998-041A.html Nozomi] was an ill-fated Japanese probe launched toward Mars in 1998 but it suffered mechanical problems and solar flare damage before being abandoned into a rough two year orbit around the Sun. Nozomi made two flybys past the Moon for gravitational assists to escape Earth&#8217;s neighborhood, acquiring a handful of images of the lunar near and far sides. All the images seem not quite in focus, perhaps because the short focal length lens produced small images that need too much enlargement. Also, it appears that the compression (either on board the spacecraft or on ground) was too intense, resulting in artifacts. Nonetheless, a few of these images provide synoptic views of part of the farside that are useful for mapping. </p>
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December 18, 1998. 21.4 mm aperture f/1.6 telescope + 2560 pixel ccd camera.</p>
 
December 18, 1998. 21.4 mm aperture f/1.6 telescope + 2560 pixel ccd camera.</p>
 
<p align="center"><em>You can support LPOD when you buy ANY book from Amazon thru </em><em>[http://www.lpod.org/?page_id=102  LPOD!]</em></p>
 
<p align="center"><em>You can support LPOD when you buy ANY book from Amazon thru </em><em>[http://www.lpod.org/?page_id=102  LPOD!]</em></p>
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===COMMENTS?===  
 
===COMMENTS?===  
 
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment.
 
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment.

Revision as of 17:44, 4 January 2015

Having Trouble with Mosaics?

mosswb2.jpg
image byMIC onboard NOZOMI / ISAS

Making a mosaic is difficult and not even professionals with multi-million dollar spacecraft always get it right. Nozomi was an ill-fated Japanese probe launched toward Mars in 1998 but it suffered mechanical problems and solar flare damage before being abandoned into a rough two year orbit around the Sun. Nozomi made two flybys past the Moon for gravitational assists to escape Earth’s neighborhood, acquiring a handful of images of the lunar near and far sides. All the images seem not quite in focus, perhaps because the short focal length lens produced small images that need too much enlargement. Also, it appears that the compression (either on board the spacecraft or on ground) was too intense, resulting in artifacts. Nonetheless, a few of these images provide synoptic views of part of the farside that are useful for mapping.

Chuck Wood

Technical Details:
December 18, 1998. 21.4 mm aperture f/1.6 telescope + 2560 pixel ccd camera.

You can support LPOD when you buy ANY book from Amazon thru LPOD!


COMMENTS?

Click on this icon File:PostIcon.jpg at the upper right to post a comment.