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The Antarctic plateau provides the best terrestrial sites for infrared and sub-millimetre astronomy. In this paper we examine the relative importance of temperature…
Callipallenid sea spiders are commonly found in southern Australian waters. The genera Pseudopallene and Stylopallene are frequent epibionts of arborescent bryozoan colonies of Orthoscuticella spp. and Amathia spp. Based on external morphology, colouration patterns…
Polar Mesospheric Clouds (PMC) are a ubiquitous wide-spread optical … phenomena of the polar summer mesopause region, and comprise icy … aerosols that form under the influence of large-scale atmospheric ascent … and adiabatic cooling. PMC aerosols are controlled by the thermal…
Physiological measurements of both stress and … sex hormones are often used to estimate the consequences … of natural or human-induced change in ecological studies of … various animals. DiVerent methods of hormone measurement … exist…
We present the Gattini project: a multisite campaign to measure the optical sky properties above the two high altitude … Antarctic astronomical sites of Dome C and Dome A. The Gattini-DomeC project, part of the IRAIT site testing … campaign and ongoing since January 2006…
ABSTRACT. The PLATeau Observatory (PLATO) is an automated self-powered astrophysical observatory that … was deployed to Dome A, the highest point on the Antarctic plateau, in 2008 January.
The brightness of the night sky at an astronomical site is one of the principal factors that determine the quality … of available optical observing time. At any site the optical night sky is always brightened with airglow, zodiacal … light, integrated starlight…
The Gattini cameras are two site testing instruments for the measurement of optical sky brightness, large area cloud … cover and auroral detection of the night sky above the high altitude Dome C site in Antarctica. The cameras have been in … operation since January 2006.
Blue-dyed bait is a seabird bycatch mitigation technique which is assumed to reduce the … contrast between the bait and the ocean background making baits visually cryptic to seabirds. We tested this assumption in two ways. First, using measured spectral profiles of blue-dyed … baits (fish and squid)…
Antarctic coastal polynyas are important areas of high sea ice production and dense water … formation, and thus their detection including an estimate of thin ice thickness is essential.
We present results of daytime site testing at Dome C in summer … 2003-2004. Daytime seeing has been monitored during 2 1 … 2 months … a DIMM on the bright star Canopus, giving median value of 0.54 arcsec. An every-day best seeing period has been observed around 5pm … with seeing around 0.3 arcsec.
The recent discovery of exceptional seeing conditions at Dome C, Antarctica, raises the possibility … of constructing an optical observatory there with unique capabilities. However, little is known from an astronomer’s … perspective about the optical sky brightness and extinction at Antarctic sites.
Since the first lidar observation of polar mesospheric clouds (PMC) in 1989 by a Na lidar at Andoya, extensive PMC observations have been made by lidars in both the northern and southern hemispheres. The lidar observations provide precise information on PMC altitudes, layer structure…
Antarctic macroalgae survive extended periods of darkness followed by rapid and extreme increases in irradiance when sea-ice … breaks out in summer. Algae from dark, ice-covered locations had low values of saturating irradiance (Ek: 4–19 mmol photons … m2 s1)…
Dome C, Antarctica (75 S, 123 E; 3250 meters) is one of the coldest and driestlocations on Earth, with exceptionally low winds throughout the atmosphere. It therefore has the potential to be an ideal site for astronomical observations.
The Antarctic Fibre-Optic Spectrometer (AFOS) is a 30cm Newtonian optical telescope that injects light through … six 30m long optical ¯bres onto a 240¡850nm spectrograph with a 1024 x 256 pixel CCD camera.
Over the past few years, site-testing at the South Pole has revealed … conditions that are uniquely favorable for infrared astronomy. In … particular…