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Future, past and present of PB 301 at AIP

Future, past and present of PB 301 at AIP. Thomas Granzer Leibniz-Institut für Astrophysik Potsdam (AIP). 1. STELLA. First robotic, high-resolution spectrograph in the world. Consists of two telescopes, SES & WiFSIP. Routine operation of SES since 2006, WiFSIP since 2010.

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Future, past and present of PB 301 at AIP

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  1. Future, past and present of PB 301 at AIP Thomas Granzer Leibniz-Institut für Astrophysik Potsdam (AIP) Branch I retreat 1

  2. Branch I retreat STELLA • First robotic, high-resolution spectrograph in the world. • Consists of two telescopes, SES & WiFSIP. • Routine operation of SES since 2006, WiFSIP since 2010. • 2nd generation instrumentation & hardware upgrade planned. 2

  3. Branch I retreat STELLA (cont.) • STELLA: 22 ref. Publications (2001) • Liverpool Telescope: 68 ref. Pub. (2001) • Faulkes Telescopes: 51 ref. Pub. (2004) • MoNeT: 7 ref. Pub. (2004) • REM: 41 ref. Pub. (2001) • Las Cumbres: 7 ref. Pub. (2008) • ROTSE I-III (a-e): 52 ref. Pub (2001) • Fairborn observatory, T1- T16: 49 ref. Pub. (2001) 3

  4. Branch I retreat AGW@LBT • 4 AGWs delivered (2007-11) • Used for commissioning of TCS, LUCI & MODS. • Guiding cadence 2.5sec. • FWHM < 0.35arcsec. • Shack-Hartmann mask with 15x15 sub-apertures. • Wavefront sensor updates every 30sec. 4

  5. Branch I retreat ARGOS for LBT • AIP builds tip-tilt sensors for the LBT laser guide star facility. • 6 lasers to create reference stars (ground layer AO). • Tip-Tilt signal from natural star. • Tip-Tilt at several hundred Hz. • Photon counting Avalanche Photo Diode, fiber fed. • Installation and commissioning 2014. 5

  6. Branch I retreat STELLA@Monet • Since July 2013 the two MoNeT Telescopes use the STELLA Control System. • Possible target input file exchange. • May be used for joint projects (imaging) 6

  7. Branch I retreat PEPSI & SDI • Merge SCS with SDI • Take advantage of robotic scheduling • Also to issue calibrations@day? • Precursor for VATT robotization 7

  8. Branch I retreat GREGOR@night • First automated operation of telescope Dec. 2012. • Need hardware for dome control. • Use as an RV machine. 8

  9. Branch I retreat New facility >2015 • ~2m 'light bucket' • RV-machine for satellite follow-up • Together with Bocum at base of Cerro Armazones? 9

  10. Branch I retreat Network after Song/Las Cumbres? 10

  11. Branch I retreat The Extragalactic Distance Scale • The effect of metallicity on the Cepheid PL-relation using the near-IR surface brightness method • ESO Large programme on-going for 20 SMC Cepheids • Determining the distance to the LMC to better than 1% using eclipsing binaries • Calibrate the near-IR surface brightness relation for late type stars. STELLA rv curves for galactic eclipsers with accurate Hipparcos parallaxes (GAIA!) • Problem to get new V and K band light curves for bright sources, Polish group considers to built a V and K photometer for the 1m Swope. STELLA? • RR Lyrae stars with near-IR surface brightness method and GAIA, again problem to get V and K light curves for bright (nearby) sources • Calibrating the Cepheid PL relation using the maser galaxy IC10 (LBT w. LBC ongoing) J. Storm 11

  12. Branch I retreat Achievements/research plans • 2nd stage of STELLA/WiFSIP pipeline working for color photometry. • IC4756 science case mostly resolved, reobservation scheduled (paper in prep.) • IC4756, NGC2236: Stellar activity in CoRoT OCs. (2014) • GREGOR@night redesign (-2016) • SOCS data reduction (-2017) • Stellar activity of PLATO field stars (2022-) J. Weingrill 12

  13. Branch I retreat Impressions during retreat • Quest for polarimetric capabilities either at STELLA and/or GREGOR raised by at least two people. • More targets for long-term activity monitoring requested to have statistical leverage on testing theoretical models. • Overall speaking, we ARE building the right instruments for branch-I research. 13

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