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Followup of LOFAR transients with the Liverpool Telescope

Basic Specification. Fully opening enclosure (no delays for ToO's)2.0 metre f/10 ALT/AZ2 degree / second slew speedDeployable, folding mirror, allowing support of up to 5 instrumentsInstrument change time < 30 secondsCommon User Facility (typically 40-50 science programmes from around 30 differ

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Followup of LOFAR transients with the Liverpool Telescope

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    1. Followup of LOFAR transients with the Liverpool Telescope

    2. Basic Specification Fully opening enclosure (no delays for ToOs) 2.0 metre f/10 ALT/AZ 2 degree / second slew speed Deployable, folding mirror, allowing support of up to 5 instruments Instrument change time < 30 seconds Common User Facility (typically 40-50 science programmes from around 30 different institutes, allocated by TACs) Fully Robotic (no night time supervision apart from start of night photometricity check, weekdays there is a daytime daily visit) LT is owned, operated and maintained by Liverpool JMU (30% of time for internal use). Instrument development done in house

    3. Current instruments RATCam - optical CCD camera: 2048 x 2048 pixels 0.135 arcsec/pixel, ~ 4.6arcmin field of view Binning 1x1, 2x2, 3x3, 4x4 (default 2x2) No windowed modes Sloan ugriz, BV, H? SupIRCam - JH near-IR camera 256 x 256 HgCdTe, 1.7 arcmin field Pre-defined exp times and dither patterns An equal length dark frame is always taken before and after the dither. SupIRCam: Linearity calibrated to <1% Exposure times =1,2,5,10,20 and 50s Dither patterns with 1, 2, 5 and 9 pointings with 7 arcsec offsets. Offset time = 10 seconds (was 20 seconds)SupIRCam: Linearity calibrated to <1% Exposure times =1,2,5,10,20 and 50s Dither patterns with 1, 2, 5 and 9 pointings with 7 arcsec offsets. Offset time = 10 seconds (was 20 seconds)

    4. Current instruments (2) Meaburn: 512x512 CCDMeaburn: 512x512 CCD

    5. Future instruments

    6. Three Basic Operating Modes Background mode (does standards!) Nothing to schedule Seeing > 3 arcseconds (or unknown) Something is broken (e.g. out of focus!) Science Control Agent - phase 2 database driven Target of Opportunity Mode Immediate abort of current observing Driven by scripts

    7. Phase 2 database Specifies the observational setup Current Methods of data entry: Phase 2 forms via email Menus for a specific science programme Robotic Telescope Markup Language (RTML) via unix socket or Web Services Future Methods of data entry: User Tool (Web based - Java Web Start) RTML via Web Services

    8. The LT edge: Target of Opportunity

    9. GRB observations (rapid response)

    10. Two-steps strategy

    11. Step 1: Manual response

    12. Long-term goal

    13. What to observe

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