A new astrometric reduction of photographic plates using the DAMIAN digitizer: improving the dynamics of the Jovian system

Details A new astrometric reduction of photographic plates using the DAMIAN digitizer: improving the dynamics of the Jovian system A new astrometric reduction of photographic plates using the DAMIAN digitizer: improving the dynamics of the Jovian system

Jul 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011mnras.415..701r&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 415, Issue 1, pp. 701-708.

Astronomy and Astrophysics

Astronomy

1

Techniques: Image Processing, Astrometry, Ephemerides, Planets And Satellites: General

Scientific paper

The astrometric monitoring of the natural planetary satellites is an important step to assess the formation and the evolution of these systems. However, in order to quantify relevant gravitational effects such as tidal forces, it is necessary to have very accurate observations over a long time interval. Unfortunately, the accuracy is decreasing as one considers older observations. To solve this issue, digitizing of old photographic plates is an attractive method, but a high accuracy in the measurement and the reduction of those plates is absolutely necessary.
We have developed methods and algorithms adapted to specific plates provided by USNO, using the DAMIAN digitizer of ROB. From a set of 35 plates taken in 1974, we have been able to produce measurements with an accuracy better than 0.08 μm and after reduction using the UCAC2 catalogue, rms residuals of 35 mas (1.7 μm) for intersatellite positions (when the original reduction provided 100 mas) and of 65 mas for equatorial RA and Dec. positions (which were not possible to get with the original reduction). First results on the dynamics of the satellites and of the planet Jupiter are provided.

Affiliated with

Also associated with

No associations

Rating

A new astrometric reduction of photographic plates using the DAMIAN digitizer: improving the dynamics of the Jovian system 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 A new astrometric reduction of photographic plates using the DAMIAN digitizer: improving the dynamics of the Jovian system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A new astrometric reduction of photographic plates using the DAMIAN digitizer: improving the dynamics of the Jovian system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-997594