Splitting the sky HTM and HEALPix. W. O’Mullane Astrophysics Division, Space Science Department of ESA, ESTEC, 2200 AG Noordwijk, The Netherlands. A. J. Banday MPI für Astrophysik, P.O. Box 1523, D-85740 Garching, Germany. K. Gorski European Southern Observatory (ESO), Karl Schwarzschild Strasse 2, 85748 Garching, Germany P. Kunszt, A. Szalay The Johns Hopkins University, 3701 San Martin Drive,...

The correct calibration of the interaction matrix affects the performance of an adaptive optics system. In the case of high-order systems, when the number of mirror modes is worth a few thousands, the calibration strategy is critical to reach the maximum interaction matrix quality in the minimum time. This is all the more true for the E-ELT, for which on sky calibration procedures have to be co...

Large-scale integration of photovoltaics (PV) into electricity grids is challenged by the intermittent nature solar power. Sky-image-based forecasting using deep learning has been recognized as a promising approach to predicting short-term fluctuations. However, there are few publicly available standardized benchmark datasets for image-based forecasting, which limits comparison different models...

Seedlings of 11 species of forest maples (Acer L.) were grown outdoors from budburst to senescence under three light regimes: ‘gap centre under clear skies ’ (approx. 20% open sky irradiance; red:far-red ratio ̄ 1±12) ; ‘gap centre under cloudy skies ’ (1±5%, ratio ̄ 1±03) ; and ‘gap edge’ (2±5%, ratio ̄ 0±6). Seedlings grown under the gap centre (clear sky) regime had significantly greater height...

The Sloan Digital Sky Survey IV extended Baryonic Oscillation Spectroscopic Survey (SDSS-IV/eBOSS) will observe 195 000 emission-line galaxies (ELGs) to measure the baryonic acoustic oscillation (BAO) standard ruler at redshift 0.9. To test different ELG selection algorithms, 9000 spectra were observed with the SDSS spectrograph as a pilot survey based on data from several imaging surveys. Firs...

Experiments have shown that the skyline is an important visual cue for navigating insects. However, the comparison between two snapshots collected at different times of day is a complex task due to possible illumination changes. In this study we examine whether the information from two different color channels (UV and green, which are also available for many insects) can be used to obtain an il...

A new fast clear-sky model called McClear was developed to estimate the downwelling shortwave direct and global irradiances received at ground level under clear skies. It is a fully physical model replacing empirical relations or simpler models used before. It exploits the recent results on aerosol properties, and total column content in water vapour and ozone produced by the MACC project (Moni...

The use of RGB cameras in photometric applications has grown over the last few decades many fields such as industrial applications, light engineering and analysis quality night sky. In this field, they are often used conjunction with a Sky Quality Meter (SQM), an instrument for measurement sky brightness (NSB), mainly when there is significant amount artificial at (ALAN). performances these two...

High elevation montane areas are called "sky islands" when they occur as a series of high mountains separated by lowland valleys. Different climatic conditions at high elevations makes sky islands a specialized type of habitat, rendering them naturally fragmented compared to more continuous habitat at lower elevations. Species in sky islands face unsuitable climate in the intervening valleys wh...

Eighteen patients with acute lymphoblastic leukemia (ALL) were investigated using spectral karyotyping (SKY), and multicolor fluorescence in situ hybridization (FISH) banding analyses. SKY analysis confirmed previous results in patients with G-banded diploid karyotype. Nevertheless in three out of five patients with two or more chromosomal abnormalities, SKY and multicolor banding methods refin...