Please review that specified orientation ranges AVOID placing spider diffraction spikes along NSEW directions. Anticipated bleed/blooming from nearby 12th-magnitude star has been checked and should not affect useability of images. ----- Submission 1 (Thu May 05 21:50:11 GMT 2005) ----- Assigned ID: 40 ----- Submission 1 (Wed Jan 19 15:50:02 GMT 2005) ----- The Unified Scheme for Seyfert galaxies successfully explains the basic distinctions between Type 1 and Type 2 AGN, including the existence of broad scattered lines in polarized flux spectra of the latter. However, it fails to account for the strongly polarized broad lines often observed in Type 1 AGN. We have discovered an intermediate type red QSO that exhibits polarization properties of both types; indeed it suggests a bipolar scattering geometry similar to that seen in Galactic protoplanetary nebulae. We request a small allocation with the high-resolution camera on ACS to image the object in two key spectral bands. The results will allow an unambiguous interpretation of ground-based data, and enable modeling of the inclination and opening angle that illuminates the scattering clouds. Like NGC 1068, a successful explanation of this object will not only allow further unification of AGN but also aid in unraveling the details of their inner structure.

The observations are straightforward imaging, except for the proximity (7.8 arcsec E) of a V = 12 mag G star that raises concern about possible scattered light. We choose the ACS/HRC, which can yield a PSF approaching 0.03" FWHM in the blue, and the 26" FOV is ample for imaging the QSO. We wish to observe with a roll angle that orients the secondary spider diffraction spikes at least 15 degrees from E-W. Image dithering and drizzle analysis will be used to maximize resolution while removing the cosmic rays. The blue scattered component is well-sampled by the F435W filter. In the red we choose F658N. AGN/QUASARS 12 false 0.0 false false false false false SUPPORTED GALAXY QSO LOBE This object was generated by the targetselector and retrieved from the NED database. J2000 10 49 43.4000 +58 37 50.40 J2000 ACS/HRC Imaging No No F435W ACS/HRC Imaging No No F658N POS-TARG DITHER 0.15 LINE 0.098 false false 63.5 4 19.89 ACS-HRC-DITHER-BOX 1 false /var/tmp/OPVisit60938.xml 1115329781864 (Tic-Visit :proposal-id 10553 :visit-id "01" :proposal-version -1 :trans-version "20050323" :date "05-May-2005 15:49:34.0" :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 294416 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 10553 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 10553 :visit-id "01" :orbit-number 1 :pcs-time 367 :si-vis-utilization 3140 :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 3517 :pcs-gap 0 ) (Tic-Orbit :proposal-id 10553 :visit-id "01" :orbit-number 2 :pcs-time 367 :si-vis-utilization 3136 :al-overhead-at-end 0 :internal-dur-at-end 360 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3517 :pcs-gap 0 ) true 2 0 /var/tmp/OPVisit43922.xml 1114805892380