ALFA Installation & Status Steve Torchinsky GALFA Meet3, Arecibo August 29, 2004.

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Presentation transcript:

ALFA Installation & Status Steve Torchinsky GALFA Meet3, Arecibo August 29, 2004

Sky test in Australia March 16, 2004

Cold test in Australia March 16, 2004

Cold load in Australia March 16, 2004

Packing up in Australia March 19, 2004

Arrival at Arecibo April 1, 2004

Taking Possesion April 1, 2004

Pre-installation testing April 5, 2004

Inside ALFA April 5, 2004

Practice Run April 13, 2004

Day before installation April 20, 2004

Waiting to go April 20, 2004

At the bottom of the bowl April 21, 2004

Liftoff! April 21, 2004

ALFA soars April 21, 2004

Approaching the Dome April 21, 2004

Entering the Dome April 21, 2004

Into the rotary floor April 21, 2004

ALFA installed April 21, 2004

7 beams April 21, 2004

First Light April 24, 2004

ALFA and OH May 11, /1667 OH Lines observed from Comet 2001 Q4 (NEAT) using ALFA (more later from Ellen)

Hiccup #1 June, 2004 Motor encoder failure

Precursor: PALFA August 1, 2004

First new ALFA pulsar August 1, 2004

Hiccup #1: resolved August, 2004 Motor replaced

No RFI from motor August 26, 2004 Cabinet door closedCabinet door open Keep an eye out for harmonics of 13.33MHz (more later from Desh)

Hiccup #2 August, 2004 Short circuit to LNA Beam 0A Photo: April 5, 2004

Hiccup #2: continues… August 28, 2004

EALFA Drift Precursor August 22, 2004 Detects galaxies! Giovanelli, Hoffman, Haynes, Catinella, Momjian, Muller, Kent, et al

Gain, SEFD, Tsys July 20, 2004(more later from Desh)

ALFA today August 28, 2004 Pulsar Precursor ongoing Extragalactic Drift precursor on going GALFA precursor starts Friday Array rotation is enabled (parallactic angle tracking, this week) Motor electronics well shielded Center beam, pol-A is still offline