----- Attempting Submission 1 (Fri Jul 22 21:20:01 GMT 2011) ----- There are error messages about missing ETC run number and BOT. Based on previous exposures of this target with the same instrument, we believe the exposure times are correct, and that there will not be any Bright Object issues. High-Precision Proper Motions in the M87 Jet As the nearest galaxy with an optical jet, M87 affords an unparalleled opportunity to study extragalactic jet phenomena at the highest resolution. We have previously obtained HST images of the jet with unprecedented resolution which show detailed shock structures as well as numerous unresolved condensations over the first few arcseconds of the jet. Our previous HST monitoring observations have found superluminal motion at speeds up to 6c in many of these features, and showed the formation of new emission regions and rapid variability. The recently repaired STIS/NUV instrument now presents a unique opportunity to measure proper motions in the M87 jet with a single highly stable, high resolution instrument across a 13 yr timebase. We will use these new data, together with STIS/NUV data from 1999-2003 to map the velocity field of the jet to much higher accuracy than previously possible. This will allow us to measure the bulk deceleration of the jet, transverse motions, accelerations / decelerations of individual features, and numerous fainter jet features. We will use this to test models for the structure and kinematics of relativistic jet flows, synchrotron emission regions, and AGN in general.
We will obtsin STIS NUV/F25QTZ images of the jet using a setup which closely duplicates our previous monitor observations. Sub-exposures will be dithered to improve PSF sampling by the 0.024" pixels and minimize detector artifacts. There should be no bright object issues for either the M87 nucleus or jet. AGN/QUASARS 12 false 0.0 0.0 false false false false SUPPORTED GALAXY ELLIPTICAL JET RADIO GALAXY J2000 J2000 STIS/NUV-MAMA Imaging No No F25QTZ /Users/biretta/OP-cache/12671-v01.xml The scheduling data was generated by CASM 19.3. CASM was run in Phase II mode. Prefer scheduling during July - August 2012 visibility window. (Tic-Visit :proposal-id 12671 :visit-id "01" :proposal-version -1 :trans-version "20110509" :date "22-Jul-2011 17:01:29.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "24" :si-bright-earth-limb-angle 20.0 :data-volume 278320 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 12671 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 12671 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2673 :al-overhead-at-end 0 :internal-dur-at-end 452 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3021 :pcs-gap 0 ) true 1 0