Align the images on the asteroid and let the stars trail.Sets of Images to Track and Stack: http://astro.uchicago.edu/yerkes/outreach/observing/iasc/
If
you want to try and track and stack single asteroid images and you
would like to be able to do this yourself from the 30-80 images that
Bob Holmes takes for each target, you can get the image sets at this
link. Otherwise, you can just work from the IASC site with the stacked
sets provided.
Speed and PA of Asteroids
Astrometrica
has the Speed and PA for known asteroids. When you stack the images
you can click on the ... in asteroid field and then write in the name
of the asteroid in the form and hit the search icon. If the target is
in the box, choose it and hit return. The Speed and PA automatically
pops into the form and you can track the stacks on the asteroid. You
can also restack the images at any time to go with different asteroids
that might be in the field. Right click on one your stacks to see the
re-stack option. If the target is unknown to Astrometrica then to to
the MPC site.
1.) Go to the NEOCP at http://www.minorplanetcenter.org/iau/NEO/ToConfirm.html
and see if your object is listed, if so, check the box next to it and
click on "get ephemerides" -
make sure you use the speed value in arcseconds per minute (i.e."/min)
2.) If the object is not listed go to Here is more of an illustration of how to use the Ephemeris Service Page.
The Minor Planet Center (MPC) has a page that will give you the Speed and PA and the expected positions of asteroids. Complete Form. http://www.cfa.harvard.edu/iau/MPEph/MPEph.html
Example:
images that go with IASC 2-24-2010 sets are on the Yerkes site zipped
into one big file. You will have the original single images that you
can divide into thirds and stack in Astrometrica with the speed and PA
below. Also see the link to find out the speed and PA for any asteroid
now or in the past or future.
2010 CD55 Speed 12.30 PA 235.0 2010 DU1 Speed 108.10 PA 264.8 2009 XR2 Speed .76 PA 80.1 2010 BH2 Speed 1.44 PA 24.3 But
in the future, for speed and PA on different dates, use this site. Put
in the target for any day into the future or past to get the speed and
PA. Here is a screenshot of how to setup this page.
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