imaging at the e-elt · imaging at the e-elt a workshop in munich, may 29th 2009 • initially the...
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
by Roberto RagazzoniEmanuele Giallongo
Fabio PasianAndrea Baruffolo
Ray BertramEmiliano DiolaitiAndrea di PaolaJacopo Farinato
John HillMatteo Lombini
Fernando PedichiniRoberto Speziali
Riccardo SmaregliaElise Vernet
LBT-WFIimager
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
• In 1996..1997 a call for Second Generation Instruments for LBT
• Wide Field option in LBT was envisaged through a trapped Cassegrain Camera
• An heretic proposal by Padova and Rome of a Prime Focus camera
• Remember that from a Florentinian perspective Rome is deep South and Padova is part of the Austro-Hungaric empire
• The project run the risk to be marked as unfeasible, undesirable…
• In spite of this it passed as PI-instrument after a couple of year and a proposal with a D=1m lense and two aspheric surfaces…
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
• Initially the spatial resolution is kept verrrrymoderate (about 1arcsec) and is provisionally named “Blured”, but several dislikes this diminuitive approach…
• About 92 definitive optical designs leading to a D=0.82m big lens, one concave conical aspheric…
• Green light for Call for Tender for optics in about 2000…
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
L1
L2
L3 (aspheric)L4
L5
Filters
L6(cryo win)
Two very similar optical design,optimized for UB (+V) and VRIZ…
BK7 (easy…)Fused Silica (tough…)
Nominal optical quality 0.2” (tre is about 0.25”)
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
Slumping of the Fused Silica blank… Welding of the hub rough structure
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
…and, the day the Italian State TV comes to make a footage of the big lens…
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
Daniel Moricaud & all the ReoscSagem staff have been great inthis affair…!!!!
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
Postcards sent around…
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
First true-binocular image…
First RR-Lyrae found in M31 from a ground based telescope
About 20+ refereed papers submitted/accepted/in press…
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
Peak performances: ~0.4arcsec in U --- 0.5arcsec in V
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
Subaru deep field (11.6h in U band)
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009
3h exp time in z-BandLim Mag. 25.6 ABSn z~0.6 (based on R-z)
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Imaging at the E-ELTA WorkShop in Munich, May 29th 2009