CR splits were changed to two point dithers pos-targs for mosaic in visit 1 were adjusted ----- Submission 1 (Wed Oct 05 17:14:02 GMT 2005) ----- Phase II Proposal 10768 (ulx10768) successfully submitted. ----- Submission 2 (Fri Oct 14 16:03:16 GMT 2005) ----- Assigned ID: 1019 ----- Submission 1 (Thu Aug 18 18:43:53 GMT 2005) ----- Phase I Proposal 1019 (chandra7_ulx) successfully submitted. this is a Chandra proposal Locating the Ultraluminous X-Ray Source in IC 342 Identification of unique optical counterparts of ultraluminous X-ray sources will help us understand the evolutionary state of the ULX binaries and may enable direct mass measurements. The search for counterparts has been hampered by the limitations of the absolute astrometry of Chandra. Using wider optical fields, made possible with the HST/ACS, we demonstrate that we should detect multiple X-ray sources with optical counterparts which will enable us to achieve 0.1-0.2 arcsecond relative astrometry between HST and Chandra. This should enable a unique counterpart identification for the ULX in IC 342.
Visit 1 - We will obtain a mosaic image of the field around IX 342 X-1 using the ACS/WFC and the F625W filter (SDSS r). We perform a 950 s integration at each of four positions using the ACS/WFC with the F625W (SDSS r) filter. This can be done in two orbits. Visit 2 - We will obtain HST images in B, V, I, and H-alpha. This will require three orbits. The first orbit will be used to obtain F555W and F814W exposures of 1080 seconds each. The other two will be used to obtain F435W and F658N exposures of 2400 seconds each. HOT STARS 12 false 58.40 0.0 false false false false false SUPPORTED UNIDENTIFIED X-RAY EMITTER J2000 00 00 0.0000 +00 00 0.00 J2000 POS-TARG DITHER 3.011 LINE false false 3 85.28 ACS-WFC-DITHER-LINE 1 false POS-TARG DITHER 0.265 LINE 0.187 false false 69.05 4 20.67 ACS-WFC-DITHER-BOX 2 false POS-TARG DITHER 3.011 LINE false false 2 85.28 ACS-WFC-DITHER-LINE 3 false /tmp/OPVisit17631.xml (Tic-Visit :proposal-id 10768 :visit-id "01" :proposal-version -1 :trans-version "20050717" :date "14-Oct-2005 10:59:09.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 2273792 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 10768 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 10768 :visit-id "01" :obset-id "A1" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 10768 :visit-id "01" :obset-id "B1" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 10768 :visit-id "01" :obset-id "C1" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 10768 :visit-id "01" :orbit-number 1 :pcs-time 367 :si-vis-utilization 3229 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3614 :pcs-gap 0 ) (Tic-Orbit :proposal-id 10768 :visit-id "01" :orbit-number 2 :pcs-time 367 :si-vis-utilization 3229 :al-overhead-at-end 0 :internal-dur-at-end 349 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3614 :pcs-gap 0 ) true 2 0 /home/kaaret/hst/OP-cache/ulx10768-v01.xml /home/kaaret/hst/OP-cache/ulx10768-v02.xml (Tic-Visit :proposal-id 10768 :visit-id "02" :proposal-version -1 :trans-version "20050717" :date "14-Oct-2005 10:37:39.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "27" :si-bright-earth-limb-angle 20.0 :data-volume 3979136 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 10768 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 10768 :visit-id "02" :orbit-number 1 :pcs-time 367 :si-vis-utilization 3247 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3614 :pcs-gap 0 ) (Tic-Orbit :proposal-id 10768 :visit-id "02" :orbit-number 2 :pcs-time 367 :si-vis-utilization 3067 :al-overhead-at-end 0 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3614 :pcs-gap 0 ) (Tic-Orbit :proposal-id 10768 :visit-id "02" :orbit-number 3 :pcs-time 367 :si-vis-utilization 3055 :al-overhead-at-end 0 :internal-dur-at-end 349 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3614 :pcs-gap 0 ) true 3 0 /home/kaaret/hst/OP-cache/ulx10768-v02.xml