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Wilga 2007 Full π system and simulation Janusz Użycki Faculty of Physics Warsaw University of Technology π of the Sky Wilga 2007 Plan Introduction to the „Full Pi system” Overview of the new system Mount’s facilities, interfaces of cameras Simulation: hardware and software Hierarchy of modules, structures Results π of the Sky 2 Wilga 2007 Gamma Ray Bursts (GRB) Discovered in 1967 by spying satellites of USA Energy: 10 milliards years of the Sun life Duration: 0.01...100s Distance: up to 13 milliards light years Intensity: 2...3 per day (currently observed by satellites) Origin: outside of the Galaxy - hipernova – massive star collaps to a black hole? - merging two neutron stars into a black hole? π of the Sky 3 Wilga 2007 Gamma Ray Bursts (GRB) π of the Sky 4 Wilga 2007 Gamma Ray Bursts (GRB) Galactic coordinates π of the Sky 5 Wilga 2007 „Pi of the Sky” What is it? The project is being prepared by Soltan Institute for Nuclear Studies in collaboration with: Center of Theoretical Physics, Polish Academy of Science Warsaw University Warsaw University of Technology other universities and institutes http://grb.fuw.edu.pl π of the Sky 6 Wilga 2007 The main goals Research of short timescale (1s...1year) astrophysical phenomena Search for extragalactic optical counterparts of Gamma Ray Bursts (GRB), determination of limits Exploration for variable stars (periodic and aperiodic changes of a star magnitude) Investigation for new stars π of the Sky 7 Wilga 2007 The main goals The whole celestial sphere covering Each “Full Pi” system covers two steradians (¼ of the Sky → π) Minimal response time on events like GCN alerts (GRB Coordinates Network) π of the Sky 8 Wilga 2007 Prototype π of the Sky 9 Wilga 2007 Las Campanas Observatory (LCO) ASAS experiment dome π of the Sky 10 Wilga 2007 Las Campanas Observatory (LCO) 2 CCD cameras (own developed construction) The matrix: 2k × 2k pixels Field of view (FOV): 20º × 20º Range: 10...11m (1 frame), 12...13m (20 frames) Parallactic motorized mount (own construction) Time to target below a minute 3 PC computers for control and analysis Ethernet network, UPS, power control, etc. π of the Sky 11 Wilga 2007 Triggers and alerts - strategy Scan of the Sky two times per night Self-trigger – on-line flash recognition Following SWIFT satellite FOV Following INTEGRAL satellite FOV Following up with ASAS 25cm telescope Reaction to other GCN alerts Observing some objects from GTN's list (GTN: Global Telescope Network) π of the Sky 12 Wilga 2007 Modules of Pi software (LCO) π of the Sky 13 Wilga 2007 Full Pi system The main idea The Canary Islands Two sides: parallax effect usage ~150km apart ~150 km (eg. La Palma + Tenerife) 1 pixel parallax gives 700 000 km distance to object π of the Sky 14 Wilga 2007 Full Pi system features 2× 16 CCD cameras The matrix: 2k × 2k pixels FOV: 16 × (20º × 20º) ≈ 2 steradians Canon optics: f = 85mm, f / d = 1.2 Range: 12m (1 frame), 14m (20 frames) 2× 4 parallactic robotic mount Two modes: side-by-side (WIDE) or common-target (DEEP) 2× 24 PC computers for control and analysis 3000 frames = 25 GB / night / camera Ethernet networks, power system, etc. π of the Sky 15 Wilga 2007 Ethernet networks diagram (Full Pi system) π of the Sky 16 Wilga 2007 Ethernet networks diagram (Full Pi system) π of the Sky 17 Wilga 2007 π of the Sky 18 Wilga 2007 New parallactic mount controlled via CAN / Ethernet DEEP / WIDE mode π of the Sky 19 Wilga 2007 New CCD camera USB interface and Ethernet interface Power part Analog part Digital part π of the Sky 20 Wilga 2007 NUDPSIM (camera on a mount simulator) Camera Simulator LOG: internal + LOG4PI Configuration file + parameters Optional FIT file loading Opened / closed shutter simulation Optional saving frames as FIT files π of the Sky 21 Wilga 2007 CCD 3D orientation (mount simulator) Position: meridian equator γ W E π of the Sky 22 Wilga 2007 CCD 3D orientation (sky simulator) •RA •DEC •φ φ π of the Sky 23 Wilga 2007 Results LCO and camera simulator RA = 2.56417522 hours DEC = -50.00361 deg OBJECT S0234-50 π of the Sky PIXSCALE = 36.08 pixel size: 15mm×15mm 24 Wilga 2007 The nearest future Cooperation tests of several camera’s and mount’s simulators with different combination of computers and sub-networks structures Tests the new Pi-software (piman master, piman, mount and DAQ) of the system before plug in the real hardware devices http://grb.fuw.edu.pl π of the Sky 25