The following two images are 5 second exposures taken with a Meade 12" LX200 at f/3.3 and SBIG ST-7E CCD camera. With this short exposure time, the asteroid appears starlike in each exposure, but comparison of the two images quickly reveals which object is 1998 WT24.
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| Image courtesy Alex Liu, Norcape Observatory | |
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| Image courtesy Alex Liu, Norcape Observatory | |
Exposure details
First exposure
Start time: 2001 Dec 16 12:34:58 UT
Exposure time: 5 sec
Frame centre: RA 3h 13m Dec 42deg 21.5'
Field of View: 28.5' x 18.5'
Second exposure
Start time: 2001 Dec 16 12:37:32 UT
Exposure time: 5 sec
Frame centre: RA 3h 13m Dec 42deg 21.5'
Field of View: 28.5' x 18.5'
The final image shown below is a 5 min exposure of 1998 WT24 and shows the motion of the asteroid over this interval.
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| Image courtesy Alex Liu, Norcape Observatory | |
Third exposure
Start time: 2001 Dec 16 12:58:39 UT
Exposure time: 300 sec unguided
Frame centre: RA 3h 11m Dec 42deg 21'
Field of View: 28.5' x 18.5'
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