Science large collection of science cases for seeing improved imaging and spectroscopy also demand on diffraction limited imaging and spectroscopy (Italians) Demand on IFU but MOS scanning could compensate for that. Rapid implementation with taking advantage of existing, but keeping path open for more advanced solutions

Science Some goals: >=4x4 arcmin FoV factor 2 improvement of average seeing in NIR (maybe <=0.3” FWHM) <30mas FWHM variation over the FoV >90% sky coverage high throughput operational at seeing >1”

Studies High Rayleigh system for LBT was presented Launch concepts where discussed Comparison of multiple Na and multiple low Rayleigh Results: Multiple Rayleigh systems are existing and closing loop soon and they would fit to LBT It is difficult to accommodate a launch concept to keep all kind of concepts open but we might have a solution For GLAO the difference between multiple Na and multiple Rayleigh is marginal

Requirements Fit into existing envelopes Minimize changes/removal on existing units Minimize operational impact during commissioning Robust system Easy to use/ user friendly

Instrument builders vs. Astronomers Take the challenge to build robust, simple, fast and cheap But Keep the path open for more enhancements and technical challanges

Goal Definition what we want to have at the end of Phase A – Performance estimate – Optomechanical fitting into existing envelopes – Launch concept which accommodate for upgrades – Upgrade path – Estimate of impact on telescope (size, power, etc.) – Plan how to implement the system to minimize the impact on the telescope (operations shutdown)