Concert recording 2016-11-15

[Track 1]. Subjugation. Connection [Track 2]. Captivation / Durgan Maxey -- [Track 3]. Fight / Bryce Owens -- [Track 4]. Overture to Stay / Joshua Bland -- [Track 5]. A cellist\u27s legacy. Part I [Track 6]. Part II / Eric Dreggors -- [Track 7]. Evening prayer / Robbie Baker -- [Track 8]. Elegy / Brandon Wade -- [Track 9]. The grotesques trio. Gargoyles [Track 10]. Chimera [Track 11]. Grotesques / Marissa Johnson -- [Track 12]. Crosshair / Joshua Bland -- [Track 13]. Nightwind sings / L. Coley Pitchford -- [Track 14]. Six reflections through poetry. Memories (Walt Whitman) [Track 15]. The musician\u27s wife (Weldon Kees) [Track 16]. The road not taken (Robert Frost) [Track 17]. Lessons (Whitman) [Track 18]. Stronger lessons (Whitman) [Track 19]. O me! O life! (Whitman) / Nick Vecchio -- [Tracks 20-21]. String quartet #1 / Jeremiah Flannery -- [Track 22]. Tides. Morning tide [Track 23]. Bore tide / Elizabeth Greener -- [Track 24]. Shepherd\u27s contemplation / Robbie Baker -- Green grass / arranged by Eva Martin -- [Track 25]. Urbe fracta est II. A prayer for Jerusalem / Joshua Bland

Selex infrared sensors for astronomy – present and future

Many branches of science require infrared detectors sensitive to individual photons.Applications range from low background astronomy to high speed imaging. Selex-ES Ltd inSouthampton, UK, has been developing HgCdTe avalanche photodiode (APD) sensors forastronomy in collaboration with ESO since 2008 and more recently the University of Hawaii.The devices utilise MOVPE grown on low-cost GaAs substrates and in combination with amesa device structure achieve very low dark current and near-ideal MTF. MOVPE providesthe ability to grow complex HgCdTe heterostructures which have proved crucial to suppressbreakdown currents and allow high avalanche gain in low background situations. A customdevice called Saphira (320x256/24μm) has been developed for wavefront sensors,interferometry and transient event imaging. This device has achieved read noise as low as0.26 electrons rms and single photon imaging with avalanche gains up to x100. It is used inthe ESO Gravity program for adaptive optics and fringe tracking and has been successfullytrialled on the 3m NASA IRTF, 8.2m Subaru and 60 inch Mt Palomar for lucky imaging andwavefront sensing. In future the technology offers much shorter observation times for readnoiselimited instruments, particularly spectroscopy. The paper will describe the MOVPEAPD technology and current performance achievements

Selex infrared sensors for astronomy – present and future

Many branches of science require infrared detectors sensitive to individual photons.Applications range from low background astronomy to high speed imaging. Selex-ES Ltd inSouthampton, UK, has been developing HgCdTe avalanche photodiode (APD) sensors forastronomy in collaboration with ESO since 2008 and more recently the University of Hawaii.The devices utilise MOVPE grown on low-cost GaAs substrates and in combination with amesa device structure achieve very low dark current and near-ideal MTF. MOVPE providesthe ability to grow complex HgCdTe heterostructures which have proved crucial to suppressbreakdown currents and allow high avalanche gain in low background situations. A customdevice called Saphira (320x256/24μm) has been developed for wavefront sensors,interferometry and transient event imaging. This device has achieved read noise as low as0.26 electrons rms and single photon imaging with avalanche gains up to x100. It is used inthe ESO Gravity program for adaptive optics and fringe tracking and has been successfullytrialled on the 3m NASA IRTF, 8.2m Subaru and 60 inch Mt Palomar for lucky imaging andwavefront sensing. In future the technology offers much shorter observation times for readnoiselimited instruments, particularly spectroscopy. The paper will describe the MOVPEAPD technology and current performance achievements