Re: Neo Search and satellite imaging

From: Marco Langbroek via Seesat-l <>
Date: Tue, 04 Nov 2014 10:54:39 +0100
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 

> 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.

Cospar 4353 (Leiden):   52.15412 N, 4.49081 E (WGS84), +0 m ASL
Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL
Cospar 4355 (Cronesteyn): 52.13878 N, 4.49937 E (WGS84), -2 m ASL
Station (b)log:
Twitter: _at_Marco_Langbroek
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