Faint Universe Breakout, Solar System sub-group The solar system sub-group in the faint universe session had a pretty wide-ranging discussion about various topics (see random collection of our notes below). Many of our points could apply to any area of astronomy, not just solar system science, but a few may be mostly solar-system-specific. I think we were all in agreement though with wanting as flexible observing options as possible (both in terms of strategies, observing modes, and technology) as a way to best take advantage of the new solar system science, some of which will inevitably be unpredicted and unpredictable, in the next decade. • Telescope observing exchanges (i.e., similar to the current Subaru/Gemini/Keck observing time exchange program) and coordination between national facilities (e.g., ESO, EAO) would be useful . Right now this occurs in an ad-hoc way through collaborators but could be more formal. Could coordinate hemisphere coverage, selection of first-light instruments for ELTs (e.g., TMT, GMT, and EELT should be coordinating with each other to do complementary science rather than competing for the same science and being redundant), etc. • Need high spatial resolution (and adequate S/N at those resolutions) to study spatially resolved objects like major planets to study changing atmospheric or surface features • May want to think about how to use existing facilities just with new instrumentation (including possible automation/roboticization) • Need to consider balance between telescope overheads and desire to only observe an object for a short amount of time (e.g., want ability to observe many targets in limited amount of time, or spread out multiple short observations of a single object over a long period of time); sometimes speed of things like filter changes, slewing to new targets, or setting up guiding can be just as important considerations as a telescope's wavelength coverage or field of view. • Narrowband filters can be a compromise between colors and spectroscopy to focus on certain lines/bands but get enough S/N per bin, but telescopes need to be able to accommodate user filters and funding support may be needed to develop or purchase such filters. • Large aperture telescopes are needed to characterize both objects that are faint because they are distant and also nearby objects that are faint because they are small. • Fast rotating objects demand (near) simultaneous visible and infrared observations for adequate color characterization. Multi-color cameras are desirable. Otherwise, Solar system objects likely require facilities that allow fast switching of instruments. • Solar System objects science imposes tough requirements on telescope facilities requiring non-sidereal tracking (especially for observation/characterization of relatively close dim objects), for AO instruments the size of the corrected FoV, as well as the dithering/nodding (chopping) allow, (near)simultaneous multi-wavelength coverage, etc.. • Fostering collaboration is a key to enable higher productivity and good use of existing facilities of various apertures. • Solar System Science is a field that requires (make use) of facilities across various aperture sizes, from small/modest to large aperture to enable observations that required of high sensitivity (key is the instrumentation). • Solar System in the context of Big data, LSST will provide enough transients originating in Solar Systems objects. Likely the community is not going to be limited by the science data available, but the resources in order to have students/researchers looking/analyzing that data. • Note about LBTO: AO boosting in the visible bands (this is AO using relatively bright objects in the visible); plan for interferometry in the visible; LBT is already equipped with adequate low resolution spectrograph in the visible (allowing good wavelength coverage). However, needs to improving in the IR spectroscopy to allow JHK asteroids science. Queue mode is required to adequately respond to the programmatic needs and maximize scientific productivity.