(meteorobs) Re: [IMO-News] New Meteor on Mars?

Swift, Wesley Wesley.Swift at nasa.gov
Tue Nov 1 12:21:50 EST 2005


Although not always definitive, the best way to differentate a meteor
from a cosmic ray is to look for the image point spread function.  Any
optical image (ie. meteor) has a bit of spread while particle events
(your cosmic) take place within the CCD and only affect adjacent pixels
at "corners".

Wes


-----Original Message-----
From: meteorobs-bounces at meteorobs.org
[mailto:meteorobs-bounces at meteorobs.org] On Behalf Of GeoZay at aol.com
Sent: Monday, October 31, 2005 6:08 PM
To: w.holwerda at home.nl; c.trayner at leeds.ac.uk; imo-news at yahoogroups.com;
meteorobs at meteorobs.org
Subject: (meteorobs) Re: [IMO-News] New Meteor on Mars?

 

>>If I may add my comment to the discussion, I agree to the  effect of 
>>cosmic
rays on the CCD. Please look at other raw images  at:

http://marsrovers.jpl.nasa.gov/gallery/all/spirit_p643.html

Many  of these images contain similar traces, if all of these were
meteors, then a  real shower has happened.

Best regards,
Wim Holwerda<<
 
After looking at the other images Wim referred to, I have to agree  that
cosmic rays on the CCD are the most likely culprits....Shucks! :O)
George Zay 



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