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Location: UFOUpDatesList.Com > 2004 > Mar > Mar 17

Re: JPL's Mars UFO - Anderson

From: Paul Anderson <paulanderson.nul>
Date: Tue, 16 Mar 2004 08:55:44 -0800
Fwd Date: Wed, 17 Mar 2004 03:46:45 -0500
Subject: Re: JPL's Mars UFO - Anderson


>From: Nick Balaskas <Nikolaos.nul>
>Date: Tue, 16 Mar 2004 00:31:14 -0500 (Eastern Standard Time)
>Fwd Date: Tue, 16 Mar 2004 09:12:40 -0500
>Subject: Re: JPL's Mars UFO - Balaskas

>There are three other similar pictures taken with the Navigation
>Camera on the Martian day Sol 067 that do not show any streaks
>at all (see URL below)! From the times given for the first three
>pictures, the exposure times for these three were much shorter
>than the similar looking fourth picture with the streaks that
>Paul Anderson says was a 5 minutes time exposure.

>http://marsrovers.jpl.nasa.gov/gallery/all/spirit_n067.html

>>That seems the most reasonable explanation to me. There are too
>>many streaks for all of them to be satellites.

>Where are the "cosmic ray" streaks in the first three pictures?

>>With a long exposure, occasionally a cosmic ray will hit at a
>>low grazing angle, creating a streak rather than a dot -- and
>>there are a lot of dots on that image that probably are cosmic
>>ray hits, too.

>There are just too many long streaks to be easily explained as
>cosmic rays with low grazing angles hitting the detector. Also,
>one would expect that the metal(?) camera casing around the
>detector would shield it from all such cosmic rays with low
>grazing angles allowing mostly cosmic rays entering from the
>front lense that would form the many bright point-like images.

>As for the other pictures taken by Spirit during daylight hours,
>what is that large object on the far rim of Bonneville crater
>that is reflecting sunlight as if it was made of polished metal?

>This artificial looking object with a shape like the letter V
>(or two giant white rabbit ears!) appears in both pictures below
>which were taken a day apart and at different local times and
>Sun angles. Are there any plans to check it out from up close?

>http://marsrovers.jpl.nasa.gov/gallery/all/2/n/066/2N132225906EFF1700P1943L0M1.JPG

>http://marsrovers.jpl.nasa.gov/gallery/all/2/n/067/2N132319976EFF1800P1816L0M1.JPG

>Does anyone know approximately where the Soviet Mars 2 and 3
>landers came down on the Red Planet in 1971 (as I recall, Mars 3
>stopped working after just 20 seconds), half a decade before the
>two much more successful U.S. Viking landers?



Hi Nick and list,

Not sure which exposure times you are referring to?; the time
listed for each image on that page for Sol 67 is the time it was
taken during the day or night, in sequence, not the exposure
time (or did you find the exposure times elsewhere?). There is
also a JPL press images page explaining the time exposure photos
with the stars and streaks (bottom photo on page):

http://marsrovers.jpl.nasa.gov/gallery/press/spirit/20040311a.html

It mentions the five minute exposure used, at least for that
particular image. Not sure about the other four raw images you
referred to though.

Please note, to avoid confusion, these streaks are not the same
as the other unexplained horizontal streak also shown on that
page (and discussed here and elsewhere previously). See caption
"It's a Bird, It's a Plane, It's a... Spacecraft?".

The object on the rim of Bonneville crater is the lander's
discarded heat shield, which JPL had confirmed (it can also be
seen in other orbiter photos taken of the landing site). Some of
the other JPL press releases mention it. Oh well.  :-)


Paul




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