Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2009-10-27
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
15 pages, 9 figures, 3 tables. Accepted by MNRAS
Scientific paper
In this article we identify and discuss various statistical and systematic effects influencing the astrometric accuracy achievable with MICADO, the near-infrared imaging camera proposed for the 42-metre European Extremely Large Telescope (E-ELT). These effects are instrumental (e.g. geometric distortion), atmospheric (e.g. chromatic differential refraction), and astronomical (reference source selection). We find that there are several phenomena having impact on ~100 micro-arcsec scales, meaning they can be substantially larger than the theoretical statistical astrometric accuracy of an optical/NIR 42m-telescope. Depending on type, these effects need to be controlled via dedicated instrumental design properties or via dedicated calibration procedures. We conclude that if this is done properly, astrometric accuracies of 40 micro-arcsec or better - with 40 micro-arcsec/year in proper motions corresponding to ~20 km/s at 100 kpc distance - can be achieved in one epoch of actual observations
Davies Richard
Eisenhauer Frank
Foerster Schreiber Natascha M.
Fritz Tobias K.
Genzel Reinhard
No associations
LandOfFree
High Precision Astrometry with MICADO at the European Extremely Large Telescope 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 High Precision Astrometry with MICADO at the European Extremely Large Telescope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High Precision Astrometry with MICADO at the European Extremely Large Telescope will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-483045