Processing Images – Shoemaker-Levy 9 and Jupiter (Part 1 of 2)

We decided to go back to 1994 and see if we can process one of the images taken by the Hubble 8 days after the comet Shoemaker-Levy 9 broke into pieces and collided with Jupiter.

The exposures we are using were taken on 30th July 1994 and were taken as shown below. On the left, the exposure was taken with a F225W (Blue) filter and the exposure in the middle was taken with a F336W (green) filter. On the right is the exposure taken with a FQCH4N filter. This filter is used to select narrow bandwidths in four methane absorption bands which is useful in imaging planetary atmospheres such as Jupiter and Saturn. Using this filter reduces stray light when imaging near planetary rings or planetary satellites.

We will assign a color to this filter, preferably red. But this could change during processing.

Note in the final filter that one of the satellites is visible in the exposure and is casting it’s shadow on Jupiter.

Jupiter 2004-07-30 Exposures

/ TARGET & PROPOSAL ID
TARGNAME= ‘JUPITER-WF                    ‘ / proposer’s target name
RA_TARG =   2.140534498293E+02 / right ascension of the target (deg) (J2000)
DEC_TARG=  -1.251663413796E+01 / declination of the target (deg) (J2000)
DATE-OBS= ‘1994-07-30’         / UT date of start of observation (yyyy-mm-dd)
TIME-OBS= ’09:08:16′           / UT time of start of observation (hh:mm:ss)
EXPSTART=         49563.380746 / exposure start time (Modified Julian Date)
EXPEND  =       49563.38078651 / exposure end time (Modified Julian Date)
EXPTIME =                  3.5 / exposure duration (seconds)–calculated
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~ by sydneystargazers on July 26, 2010.

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