Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pazh...11..542s&link_type=abstract
(Pis'ma v Astronomicheskii Zhurnal, vol. 11, July 1985, p. 542-554) Soviet Astronomy Letters (ISSN 0360-0327), vol. 11, July-Aug
Astronomy and Astrophysics
Astronomy
3
Astrometry, Double Stars, Position (Location), Atmospheric Effects, Autocorrelation, Micrometers, Scintillation
Scientific paper
If binary components differ in color, the photocenter coordinates will depend on wavelength. By measuring this chromatic position difference (CPD) it is possible to discover and study pairs having a very small angular separation and a substantial magnitude differential. The potential accuracy of CPD measurements is estimated, and CPDs are calculated for typical binary systems. A liquid prism has been designed that compensates automatically for atmospheric color dispersion. Based on this principle a working chromatic micrometer model has been built and utilized to observe close double stars. In the case of bright single stars the CPD measurement error is attributable to random atmospheric chromatic refraction and low-frequency image excursion, and amounts to 0.005-0.01 arcsec. Periodic CPD oscillations have been recorded, corresponding to 1-2 arcsec peak-to-peak fluctuations in the signal arrival angle with a 1.5-3 min period.
Sorokin Yu. L.
Tokovinin Andrei
No associations
LandOfFree
Chromatic position differerence - A technique for studying double stars 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 Chromatic position differerence - A technique for studying double stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chromatic position differerence - A technique for studying double stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-760670