----- Submission 1 (Thu May 05 20:47:47 GMT 2005) ----- Assigned ID: 513 ----- Submission 1 (Fri Jan 21 23:17:34 GMT 2005) ----- Phase I Proposal 513 (0656_new) successfully submitted. Studying the spectum of PSR B0656+14 PSR B0656+14 is the brightest intermediate-age pulsar which has been extensively studied in X-rays and optical with different instruments. The wide-band photometry of PSR B0656+14 strongly suggests the presence of spectral features between 4000 and 11,000 A. The sensitivity and resolution of ACS/WFC opens an opportunity to study the pulsar spectrum with a higher resolution and a better S/N than it was previously possible. This will allow us to accurately measure the pulsar spectrum, confirm the spectral features and investigate their shape and strength.
To obtain the low-resolution spectrum of PSR 0656+14, we observe it with three medium width (9% of the central wavelength) RAMP filters (FR459M, FR647M and FR914M). Using different central wavelength settings for the RAMP filters, we obtain continuous spectral coverage from 4000 to 10,000 A. The chosen exposure times should provide S/N about 10 for each filter and each wavelength setting. The total scientific exposure time amounts to 13 ks. The observation is divided into 2 three-orbit visits. Because this is essentially imaging observation of a point source, on-board acquisition is not required. HOT STARS 12 false 0.0 false false false false false SUPPORTED STAR PULSAR This pulsar has a proper motion of (44, -2.4) mas/yr. A pointing accuracy of 5'' is sufficient for our purposes. B=25, R=24.6, I=24 J2000 06 59 48.1340 +14 14 21.50 J2000 ACS/WFC RampFilter No No FR459M ACS/WFC RampFilter No No FR647M ACS/WFC RampFilter No No FR914M /var/tmp/OPVisit57937.xml (Tic-Visit :proposal-id 10600 :visit-id "01" :proposal-version -1 :trans-version "20050905" :date "18-Nov-2005 12:07:28.0" :trans-errors '(:WARNINGS 3 :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 4547584 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 10600 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 10600 :visit-id "01" :orbit-number 1 :pcs-time 367 :si-vis-utilization 2855 :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 3251 :pcs-gap 0 ) (Tic-Orbit :proposal-id 10600 :visit-id "01" :orbit-number 2 :pcs-time 367 :si-vis-utilization 2824 :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 3251 :pcs-gap 0 ) (Tic-Orbit :proposal-id 10600 :visit-id "01" :orbit-number 3 :pcs-time 367 :si-vis-utilization 2880 :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 3251 :pcs-gap 0 ) true 3 0 C:\Documents and Settings\Oleg\Local Settings\Temp\OPVisit52996.xml (Tic-Visit :proposal-id 10600 :visit-id "02" :proposal-version -1 :trans-version "20050323" :date "05-May-2005 16:43:41.0" :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 10600 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 10600 :visit-id "02" :orbit-number 1 :pcs-time 367 :si-vis-utilization 2881 :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 3251 :pcs-gap 0 ) (Tic-Orbit :proposal-id 10600 :visit-id "02" :orbit-number 2 :pcs-time 367 :si-vis-utilization 2880 :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 3251 :pcs-gap 0 ) (Tic-Orbit :proposal-id 10600 :visit-id "02" :orbit-number 3 :pcs-time 367 :si-vis-utilization 2884 :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 3251 :pcs-gap 0 ) true 3 0 C:\Documents and Settings\Oleg\Local Settings\Temp\OPVisit52997.xml