The accuracy of differential astrometry limited by the atmospheric turbulence

Details The accuracy of differential astrometry limited by the atmospheric turbulence The accuracy of differential astrometry limited by the atmospheric turbulence

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97..607h&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 97, Feb. 1989, p. 607-610.

Astronomy and Astrophysics

Astronomy

24

Accuracy, Astrometry, Atmospheric Turbulence, Turbulence Effects, Error Analysis, Image Analysis, Image Motion Compensation

Scientific paper

In differential astrometry from the ground, the random motion of a stellar image due to atmospheric turbulence is a main source of error. Lindegren (1980) derived the astrometric accuracy as a function of the integration time and the field size. In this paper, data obtained from the MAP (Multichannel Astrometric Photometer, Gatewood 1987), are obtained and compared with Lindegren's predictions. The data show that sigma, the standard error of the differential image motion, for modest seeing is well approximated by S.E. (mas) = 140 (S/10 arcmin) exp 0.32/sq rt(T), for T of much greater than 10 s, where S is the separation between two stars, T is the integration time in seconds, and arcmin and mas are used for arcminute and milliarc-second, respectively.

Affiliated with

Also associated with

No associations

Rating

The accuracy of differential astrometry limited by the atmospheric turbulence does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The accuracy of differential astrometry limited by the atmospheric turbulence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The accuracy of differential astrometry limited by the atmospheric turbulence will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1884199