  We report detections and constraints for the near infrared Ks band secondary
eclipses of seven hot-Jupiters using the IRIS2 infrared camera on the
Anglo-Australian Telescope. Eclipses in the Ks band for WASP-18b and WASP-36b
have been measured for the first time. We also present new measurements for the
eclipses of WASP-4b, WASP-5b, and WASP-46b, as well as upper limits for the
eclipse depths of WASP-2b and WASP-76b. In particular, two full eclipses of
WASP-46b were observed, allowing us to demonstrate the repeatability of our
observations via independent analyses on each eclipse. Significant numbers of
eclipse depths for hot-Jupiters have now been measured in both Ks and the four
Spitzer IRAC bandpasses. We discuss these measurements in the context of the
broadband colours and brightness temperatures of the hot-Jupiter atmosphere
distribution. Specifically, we re-examine the proposed temperature dichotomy
between the most irradiated, and mildly irradiated planets. We find no evidence
for multiple clusters in the brightness temperature - equilibrium temperature
distributions in any of these bandpasses, suggesting a continuous distribution
of heat re-emission and circulation characteristics for these planets.
