Instrument: The observations were obtained with
the University of Hawaii Adaptive Optics System (Hokupa'a) with the infrared
camera QUIRC. Hokupa'a is a 36-element curvature-sensing AO system. The
for Astronomy, University of Hawaii, Adaptive
Optics Group has more information about the AO system. The detector
in QUIRC is a Rockwell 1024 x 1024 pixel HgCdTe "HAWAII" array sensitive
to 2.5 microns. A description
of QUIRC is available from the Insitute for Astronomy.
Pixel scale: 0.01974 arcsec per pixel (Detector
Field of view: 17 arcsec x 14 arcsec
Information about filters, exposure time and resolution:
|Filter||Exposure time||Resolution (FWHM)|
|BrGamma (2.166 µm narrow band)||7 times 50 seconds||0.077 arcsec|
|H2 (2.12 µm narrow band)||6 times 50 seconds||0.088 arcsec|
Processing: The images were sky-subtracted using sky images obtained before and after the observations. Then the images in each passband were registered and co-added.
The color composite is made from the co-added images in Bracket Gamma (red) and H2 (blue).
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