  The "Condor Array Telescope" or "Condor" is a high-performance "array
telescope" comprised of six apochromatic refracting telescopes of objective
diameter 180 mm, each equipped with a large-format, very low-read-noise
($\approx 1.2$ e$^-$), very rapid-read-time ($< 1$ s) CMOS camera. Condor is
located at a very dark astronomical site in the southwest corner of New Mexico,
at the Dark Sky New Mexico observatory near Animas, roughly midway between (and
more than 150 km from either) Tucson and El Paso. Condor enjoys a wide field of
view ($2.29 \times 1.53$ deg$^2$ or 3.50 deg$^2$), is optimized for measuring
both point sources and extended, very low-surface-brightness features, and for
broad-band images can operate at a cadence of 60 s (or even less) while
remaining sky-noise limited with a duty cycle near 100\%. In its normal mode of
operation, Condor obtains broad-band exposures of exposure time 60 s over dwell
times spanning dozens or hundreds of hours. In this way, Condor builds up deep,
sensitive images while simultaneously monitoring tens or hundreds of thousands
of point sources per field at a cadence of 60 s. Condor is also equipped with
diffraction gratings and with a set of He II 468.6 nm, [O III] 500.7 nm, He I
587.5 nm, H$\alpha$ 656.3 nm, [N II] 658.4 nm, and [S II] 671.6 nm narrow-band
filters, allowing it to address a variety of broad- and narrow-band science
issues. Given its unique capabilities, Condor can access regions of
"astronomical discovery space" that have never before been studied. Here we
introduce Condor and describe various aspects of its performance.
