1. Wilga 2007 π of the Sky Full π system and simulation Janusz Użycki Faculty of Physics Warsaw University of Technology

2. Wilga 2007 2 π of the Sky 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

3. Wilga 2007 3 π of the Sky 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?

4. Wilga 2007 4 π of the Sky Gamma Ray Bursts (GRB)

5. Wilga 2007 5 π of the Sky Gamma Ray Bursts (GRB) Galactic coordinates

6. Wilga 2007 6 π of the Sky „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

7. Wilga 2007 7 π of the Sky 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

8. Wilga 2007 8 π of the Sky 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)

9. Wilga 2007 9 π of the Sky Prototype

10. Wilga 2007 10 π of the Sky Las Campanas Observatory (LCO) ASAS experiment dome

11. Wilga 2007 11 π of the Sky Las Campanas Observatory (LCO) 2 CCD cameras (own developed construction) The matrix: 2k × 2k pixels Field of view (FOV): 20º × 20º Range: 10...11 m (1 frame), 12...13 m (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.

12. Wilga 2007 12 π of the Sky 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)

13. Wilga 2007 13 π of the Sky Modules of Pi software (LCO)

14. Wilga 2007 14 π of the Sky Full Pi system The main idea The Canary Islands Two sides: parallax effect usage ~150km apart (eg. La Palma + Tenerife) 1 pixel parallax gives 700 000 km distance to object

15. Wilga 2007 15 π of the Sky 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: 12 m (1 frame), 14 m (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.

16. Wilga 2007 16 π of the Sky Ethernet networks diagram (Full Pi system)

17. Wilga 2007 17 π of the Sky Ethernet networks diagram (Full Pi system)

18. Wilga 2007 18 π of the Sky

19. Wilga 2007 19 π of the Sky New parallactic mount controlled via CAN / Ethernet DEEP / WIDE mode

20. Wilga 2007 20 π of the Sky New CCD camera Digital part Analog part Power part USB interface and Ethernet interface

21. Wilga 2007 21 π of the Sky 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

22. Wilga 2007 22 π of the Sky CCD 3D orientation (mount simulator) W E equator meridian γ Position:

23. Wilga 2007 23 π of the Sky CCD 3D orientation (sky simulator) RA DEC φ φ

24. Wilga 2007 24 π of the Sky Results LCO and camera simulator RA = 2.56417522 hours DEC = -50.00361 deg OBJECT S0234-50 PIXSCALE = 36.08 pixel size: 15  m × 15  m

25. Wilga 2007 25 π of the Sky 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