History of PROMPT
• Operational since 2005
• Primary mission: rapid GRB response
• Six telescopes built initially
– Simult...
PROMPT Sites
PROMPT
UNC - CTIO, Chile
PROMPT
UNC - CTIO, Chile
PROMPT
UNC - CTIO, Chile
Current hardware (Prompt 1,3,4,5,6)
• Paramount ME
• RCOS 16” f/11.26 OTA
• Apogee U47 camera
– Backside illuminated
– 90%...
Current hardware (Prompt 2)
• Planewave A200HR
• RCOS 16” f/11.26 OTA
• Apogee U9 camera
– Frontside illuminated
– 60% QE
...
CTIO
• Weather:
– 75% - “Excellent” nights
– 15% - “Marginal” nights
– 10% - “Unusable” nights
– Wind typically blows from...
Skynet design
• Problem when building PROMPT:
– Operate multiple telescopes
– Simultaneous control
– Run over a network
– ...
Skynet Sites
Skynet
PROMPTTTT GORT
DSO-14 Morehead
Dolomiti PARI
REMO HSC
DSO-32
Telescope Automation
• Skynet
– One server running at UNC
– Discovers jobs submitted via website
– Dispatches jobs to tele...
Skynet
Website
Terminator
Telescope 1
Terminator
Telescope 2
Terminator
Telescope N
Mount Camera Focus Filter Dome Weather
System Flowchart
Web
Browser
Web
Server
MySQL
Database
Skynet
Terminator
(Prompt2)
Terminator
(Prompt1)
Terminator
(TTT)
D...
Terminator operation
• If no hardware errors:
– If weather is good:
• 0 < SunAlt < 20:
– Take darks
• Sun < -1:
– Open dom...
Prompt
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Prompt

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Prompt

  1. 1. History of PROMPT • Operational since 2005 • Primary mission: rapid GRB response • Six telescopes built initially – Simultaneous observing in U,B,V,R,I,NIR • GRB follow-up accounts for ~5% of time • Remaining time shared among collaborators and outreach programs
  2. 2. PROMPT Sites
  3. 3. PROMPT UNC - CTIO, Chile
  4. 4. PROMPT UNC - CTIO, Chile
  5. 5. PROMPT UNC - CTIO, Chile
  6. 6. Current hardware (Prompt 1,3,4,5,6) • Paramount ME • RCOS 16” f/11.26 OTA • Apogee U47 camera – Backside illuminated – 90% QE – 10 arcmin FOV – 1024 x 1024 • ACE filter wheel – UBVRI – Sloan ugriz – RGB • Astro-Haven 12ft dome
  7. 7. Current hardware (Prompt 2) • Planewave A200HR • RCOS 16” f/11.26 OTA • Apogee U9 camera – Frontside illuminated – 60% QE – 21x14 arcmin FOV – 3072 x 2048 • Apogee filter wheel • Astro-Haven 12ft dome
  8. 8. CTIO • Weather: – 75% - “Excellent” nights – 15% - “Marginal” nights – 10% - “Unusable” nights – Wind typically blows from the north – Some snow each year – Worst weather is during Chilean winter • Seeing: – 0.5” – 1.0” often reported at top of mountain – 1.2” – 1.8” typically seen at Prompt • Problem: No available space for new structures
  9. 9. Skynet design • Problem when building PROMPT: – Operate multiple telescopes – Simultaneous control – Run over a network – Shared among many users – Controlling a variety of hardware • Solution: Skynet and Terminator – Software developed at UNC • Opened possibility of expanding beyond PROMPT
  10. 10. Skynet Sites
  11. 11. Skynet PROMPTTTT GORT DSO-14 Morehead Dolomiti PARI REMO HSC DSO-32
  12. 12. Telescope Automation • Skynet – One server running at UNC – Discovers jobs submitted via website – Dispatches jobs to telescopes running Terminator • Terminator – Runs at each telescope node – Controls hardware subsystems: mount, camera, etc. – Takes dark and flat calibrations – Detects and reports hardware errors
  13. 13. Skynet Website Terminator Telescope 1 Terminator Telescope 2 Terminator Telescope N Mount Camera Focus Filter Dome Weather
  14. 14. System Flowchart Web Browser Web Server MySQL Database Skynet Terminator (Prompt2) Terminator (Prompt1) Terminator (TTT) Data Manager Reduction Pipeline … GCN Alert FUNGRB User computer At Telescope Linux cluster GCN Machines
  15. 15. Terminator operation • If no hardware errors: – If weather is good: • 0 < SunAlt < 20: – Take darks • Sun < -1: – Open dome • -3 < Sun < -7: – Take twilight flats • -12 < Sun < -18: – Twilight exposures • Sun < -18: – Nighttime exposures – If weather is bad or Sun > -1: • Close dome, park telescope • If hardware error: – Send notification; stop everything
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