Re: Neo Search and satellite imaging

From: Greg Roberts via Seesat-l <>
Date: Tue, 04 Nov 2014 12:13:35 +0200
Actually Marco APEX is also used for minor planet processing - I think 
Ian Roberts has done this
It is one aspect of APEX that I have not investigated since I am not 
particularly interested in
asteroids etc.....


On 2014-11-04 11:54 AM, Marco Langbroek wrote:
> Greg Roberts via Seesat-l schreef op 4-11-2014 8:18:
>> Good morning - as Marco states there are so many images that it 
>> presents a
>> problem in processing them. Whilst there are no doubt many treasures 
>> lurking
>> there it will take a fair amount of work, and given that a large 
>> number will NOT
>> be of interest to us,   the return may be too small too justify the time
>> spent.
> The reason I do not measure satellites in our asteroid imagery, is 
> that it would interfere with the speedy progress of the actual 
> asteroid search. Measuring and ID-ing all the satellites as well would 
> slow down the main objective (finding asteroids).
>> Of course it also depends on where the images are taken as in some
>> areas of the geo belt the amateur coverage is rather limited or even 
>> non-existent
> Brad's is US imagery I think, mine is from Hungary.
>> As to using Astrometrica, Obsreduce  etc , if the images have the 
>> standard FITS
>> header, then the logical solution is to use APEX which was designed for
>> processing  satellite trail images .
> I was thinking along the line that you have the images loaded in 
> Astrometrica (astrometric software for asteroids) any way to measure 
> the asteroids. In principle, if you already loaded the image in 
> Astrometrica measuring the trail then is a matter of clicking one end, 
> clicking the other end, and you are done. I do have self-written 
> software to convert measurements in MPC format to IOD format.
> The data I sometimes present on this list from the two 'remote' 
> telescopes in the US I use (and the one in Australia I am currently 
> testing out) are obtained this way.
>> Time may be a problem though depending on how the time  given in the
>> fits header was obtained.
> For NEA work the time needs to be accurate to subsecond level, so with 
> images from a professional survey timing accuracy will be no issue. It 
> is more a matter on whether including geosats would not interfere too 
> much with the primary objective of timely hunting for asteroids.
> - Marco
> -----
> Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
> e-mail:
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