{"action":"created","issue":{"url":"https://api.github.com/repos/LSSTScienceCollaborations/ObservingStrategy/issues/505","repository_url":"https://api.github.com/repos/LSSTScienceCollaborations/ObservingStrategy","labels_url":"https://api.github.com/repos/LSSTScienceCollaborations/ObservingStrategy/issues/505/labels{/name}","comments_url":"https://api.github.com/repos/LSSTScienceCollaborations/ObservingStrategy/issues/505/comments","events_url":"https://api.github.com/repos/LSSTScienceCollaborations/ObservingStrategy/issues/505/events","html_url":"https://github.com/LSSTScienceCollaborations/ObservingStrategy/issues/505","id":170637014,"number":505,"title":"Science Case Conclusions: 9.3 (Cosmology: Weak Lensing)","user":{"login":"MichelleLochner","id":6876163,"avatar_url":"https://avatars.githubusercontent.com/u/6876163?v=3","gravatar_id":"","url":"https://api.github.com/users/MichelleLochner","html_url":"https://github.com/MichelleLochner","followers_url":"https://api.github.com/users/MichelleLochner/followers","following_url":"https://api.github.com/users/MichelleLochner/following{/other_user}","gists_url":"https://api.github.com/users/MichelleLochner/gists{/gist_id}","starred_url":"https://api.github.com/users/MichelleLochner/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MichelleLochner/subscriptions","organizations_url":"https://api.github.com/users/MichelleLochner/orgs","repos_url":"https://api.github.com/users/MichelleLochner/repos","events_url":"https://api.github.com/users/MichelleLochner/events{/privacy}","received_events_url":"https://api.github.com/users/MichelleLochner/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":{"login":"jmeyers314","id":3650485,"avatar_url":"https://avatars.githubusercontent.com/u/3650485?v=3","gravatar_id":"","url":"https://api.github.com/users/jmeyers314","html_url":"https://github.com/jmeyers314","followers_url":"https://api.github.com/users/jmeyers314/followers","following_url":"https://api.github.com/users/jmeyers314/following{/other_user}","gists_url":"https://api.github.com/users/jmeyers314/gists{/gist_id}","starred_url":"https://api.github.com/users/jmeyers314/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jmeyers314/subscriptions","organizations_url":"https://api.github.com/users/jmeyers314/orgs","repos_url":"https://api.github.com/users/jmeyers314/repos","events_url":"https://api.github.com/users/jmeyers314/events{/privacy}","received_events_url":"https://api.github.com/users/jmeyers314/received_events","type":"User","site_admin":false},"assignees":[{"login":"jmeyers314","id":3650485,"avatar_url":"https://avatars.githubusercontent.com/u/3650485?v=3","gravatar_id":"","url":"https://api.github.com/users/jmeyers314","html_url":"https://github.com/jmeyers314","followers_url":"https://api.github.com/users/jmeyers314/followers","following_url":"https://api.github.com/users/jmeyers314/following{/other_user}","gists_url":"https://api.github.com/users/jmeyers314/gists{/gist_id}","starred_url":"https://api.github.com/users/jmeyers314/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jmeyers314/subscriptions","organizations_url":"https://api.github.com/users/jmeyers314/orgs","repos_url":"https://api.github.com/users/jmeyers314/repos","events_url":"https://api.github.com/users/jmeyers314/events{/privacy}","received_events_url":"https://api.github.com/users/jmeyers314/received_events","type":"User","site_admin":false},{"login":"StephenRidgway","id":11274987,"avatar_url":"https://avatars.githubusercontent.com/u/11274987?v=3","gravatar_id":"","url":"https://api.github.com/users/StephenRidgway","html_url":"https://github.com/StephenRidgway","followers_url":"https://api.github.com/users/StephenRidgway/followers","following_url":"https://api.github.com/users/StephenRidgway/following{/other_user}","gists_url":"https://api.github.com/users/StephenRidgway/gists{/gist_id}","starred_url":"https://api.github.com/users/StephenRidgway/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/StephenRidgway/subscriptions","organizations_url":"https://api.github.com/users/StephenRidgway/orgs","repos_url":"https://api.github.com/users/StephenRidgway/repos","events_url":"https://api.github.com/users/StephenRidgway/events{/privacy}","received_events_url":"https://api.github.com/users/StephenRidgway/received_events","type":"User","site_admin":false}],"milestone":null,"comments":0,"created_at":"2016-08-11T12:45:21Z","updated_at":"2016-08-14T20:26:31Z","closed_at":null,"body":"Dear WP section 9.3 team (@jmeyers314,  @tonytyson @StephenRidgway):\r\n\r\nShamelessly copying Will Clarkson's idea and post, I'm issuing the section authors in exactly the same way to collect responses to this. Once we have responses from each section, @egawiser and I can collate them into a chapter summary.\r\n\r\nTo help produce conclusions in a form suitable for tradeoffs to be assessed, the chapter editors have been asked (issue #494 ) to task our writing teams with providing short (~1-2 sentence) answers to a list of 10 questions produced by @ivezic, about the material in our chapter sections.\r\n\r\nI think this is probably best done through this GitHub system, by entering text straight into this \"issue.\" Therefore, please make an attempt at the questions below, by editing this issue text. (There should be a little crayon-like icon on the far right of the blue title bar for this issue - that's the \"edit\" button.)\r\n\r\nTo make this process easier, Zeljko has provided sample answers to the questions, which you can find in the original issue #494. Below is the original request text from @drphilmarshall, followed by the questions.\r\n\r\nCheers -- Michelle\r\n\r\n\"@ivezic would like to know how each science case constrains the observing cadence in several specific ways, and has provided a list of ten questions he would like answered for each science case - his list is below. Not all the questions will be relevant to every science case, but every science case must present its conclusions, and this list of questions is a very good framework to base them on! Some of the questions address relatively simple fine tuning of survey parameters, while others offer the possibility of dramatic changes. It is particularly valuable to identify constraints or tradeoffs that hold across a broad swath of science programs, and to understand which options, if any, are neutral to the science - by having every science case answer these questions, we will be better able to do that.\r\n\r\nTo illustrate the expected detail level of answers, we also provide an example for each \r\nquestion (which attempted to reflect real constraints, but are not binding in any way).\"\r\n\r\n**1) Can you place constraints on the tradeoff between the sky coverage and coadded depth?\r\nFor example, should we maximize the sky coverage (to ~30,000 sq. deg., as e.g. Pan-STARRS)\r\nor the number of detected galaxies (the current baseline with 18,000 sq. deg.)?**\r\n\r\nOur answer comes here:\r\n\r\n**2) Can you place constraints on the trade between uniformity of sampling and frequency of \r\nsampling? For example, a rolling cadence can provide enhanced sample rates over part or all \r\nof the survey part of the time, at the cost of reduced sample rate the rest of the time (while \r\nmaintaining the nominal total visit counts).**\r\n\r\nOur answer:\r\n\r\n**3) Can you place constraints on the tradeoff between the single-visit depth and the number \r\nof visits? Especially in the u band, where longer exposures would minimize the impact of the \r\nreadout noise.**\r\n\r\nOur answer:\r\n\r\n**4) Can you place constraints on the Galactic plane coverage (spatial coverage, temporal \r\nsampling, visits per band)?**\r\n\r\nOur answer:\r\n\r\n**5) Can you place constraints on the fractions of observing time allocated to each band?**\r\n\r\nOur answer:\r\n\r\n**6) Can you place constraints on the cadence for deep drilling fields?**\r\n\r\nOur answer:\r\n\r\n**7) Assuming two visits per night, should they be obtained in the same band or not?**\r\n\r\nOur answer:\r\n\r\n**8) Would your science benefit from a special cadence prescription during commissioning or \r\nearly in the survey, such as: acquiring a full 10-yr count of visits for a small area (either in all or in selected bands); a greatly enhanced cadence for a small area?**\r\n\r\nOur answer:\r\n\r\n**9) Do you have constraints for sampling of observing conditions (e.g. seeing, dark sky,\r\nairmass), possibly as a function of band, etc.?**\r\n\r\nOur answer:\r\n\r\n**10) Do you have science drivers that would require real-time exposure time optimization \r\nto obtain nearly constant single-visit limiting depth?**\r\n\r\nOur answer:\r\n\r\nFinally, if your science would benefit from a cadence methodology not covered by these questions, \r\nplease enter a description of this methodology at http://ls.st/yqq"},"comment":{"url":"https://api.github.com/repos/LSSTScienceCollaborations/ObservingStrategy/issues/comments/239694812","html_url":"https://github.com/LSSTScienceCollaborations/ObservingStrategy/issues/505#issuecomment-239694812","issue_url":"https://api.github.com/repos/LSSTScienceCollaborations/ObservingStrategy/issues/505","id":239694812,"user":{"login":"tonytyson","id":2112098,"avatar_url":"https://avatars.githubusercontent.com/u/2112098?v=3","gravatar_id":"","url":"https://api.github.com/users/tonytyson","html_url":"https://github.com/tonytyson","followers_url":"https://api.github.com/users/tonytyson/followers","following_url":"https://api.github.com/users/tonytyson/following{/other_user}","gists_url":"https://api.github.com/users/tonytyson/gists{/gist_id}","starred_url":"https://api.github.com/users/tonytyson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tonytyson/subscriptions","organizations_url":"https://api.github.com/users/tonytyson/orgs","repos_url":"https://api.github.com/users/tonytyson/repos","events_url":"https://api.github.com/users/tonytyson/events{/privacy}","received_events_url":"https://api.github.com/users/tonytyson/received_events","type":"User","site_admin":false},"created_at":"2016-08-14T20:26:30Z","updated_at":"2016-08-14T20:26:30Z","body":"Michelle,\nYou need to add me as an assignee so I can edit.\nTony Tyson\n\n\nOn 8/11/16 5:45 AM, MichelleLochner wrote:\n> Dear WP section 9.3 team (@jmeyers314 <https://github.com/jmeyers314>,\n> @tonytyson <https://github.com/tonytyson> @StephenRidgway\n> <https://github.com/StephenRidgway>):\n>\n> Shamelessly copying Will Clarkson's idea and post, I'm issuing the\n> section authors in exactly the same way to collect responses to this.\n> Once we have responses from each section, @egawiser\n> <https://github.com/egawiser> and I can collate them into a chapter summary.\n>\n> To help produce conclusions in a form suitable for tradeoffs to be\n> assessed, the chapter editors have been asked (issue #494\n> <https://github.com/LSSTScienceCollaborations/ObservingStrategy/issues/494>\n> ) to task our writing teams with providing short (~1-2 sentence) answers\n> to a list of 10 questions produced by @ivezic\n> <https://github.com/ivezic>, about the material in our chapter sections.\n>\n> I think this is probably best done through this GitHub system, by\n> entering text straight into this \"issue.\" Therefore, please make an\n> attempt at the questions below, by editing this issue text. (There\n> should be a little crayon-like icon on the far right of the blue title\n> bar for this issue - that's the \"edit\" button.)\n>\n> To make this process easier, Zeljko has provided sample answers to the\n> questions, which you can find in the original issue #494\n> <https://github.com/LSSTScienceCollaborations/ObservingStrategy/issues/494>.\n> Below is the original request text from @drphilmarshall\n> <https://github.com/drphilmarshall>, followed by the questions.\n>\n> Cheers -- Michelle\n>\n> \"@ivezic <https://github.com/ivezic> would like to know how each science\n> case constrains the observing cadence in several specific ways, and has\n> provided a list of ten questions he would like answered for each science\n> case - his list is below. Not all the questions will be relevant to\n> every science case, but every science case must present its conclusions,\n> and this list of questions is a very good framework to base them on!\n> Some of the questions address relatively simple fine tuning of survey\n> parameters, while others offer the possibility of dramatic changes. It\n> is particularly valuable to identify constraints or tradeoffs that hold\n> across a broad swath of science programs, and to understand which\n> options, if any, are neutral to the science - by having every science\n> case answer these questions, we will be better able to do that.\n>\n> To illustrate the expected detail level of answers, we also provide an\n> example for each\n> question (which attempted to reflect real constraints, but are not\n> binding in any way).\"\n>\n> *1) Can you place constraints on the tradeoff between the sky coverage\n> and coadded depth?\n> For example, should we maximize the sky coverage (to ~30,000 sq. deg.,\n> as e.g. Pan-STARRS)\n> or the number of detected galaxies (the current baseline with 18,000 sq.\n> deg.)?*\n>\n> Our answer comes here:\n>\n> *2) Can you place constraints on the trade between uniformity of\n> sampling and frequency of\n> sampling? For example, a rolling cadence can provide enhanced sample\n> rates over part or all\n> of the survey part of the time, at the cost of reduced sample rate the\n> rest of the time (while\n> maintaining the nominal total visit counts).*\n>\n> Our answer:\n>\n> *3) Can you place constraints on the tradeoff between the single-visit\n> depth and the number\n> of visits? Especially in the u band, where longer exposures would\n> minimize the impact of the\n> readout noise.*\n>\n> Our answer:\n>\n> *4) Can you place constraints on the Galactic plane coverage (spatial\n> coverage, temporal\n> sampling, visits per band)?*\n>\n> Our answer:\n>\n> *5) Can you place constraints on the fractions of observing time\n> allocated to each band?*\n>\n> Our answer:\n>\n> *6) Can you place constraints on the cadence for deep drilling fields?*\n>\n> Our answer:\n>\n> *7) Assuming two visits per night, should they be obtained in the same\n> band or not?*\n>\n> Our answer:\n>\n> *8) Would your science benefit from a special cadence prescription\n> during commissioning or\n> early in the survey, such as: acquiring a full 10-yr count of visits for\n> a small area (either in all or in selected bands); a greatly enhanced\n> cadence for a small area?*\n>\n> Our answer:\n>\n> *9) Do you have constraints for sampling of observing conditions (e.g.\n> seeing, dark sky,\n> airmass), possibly as a function of band, etc.?*\n>\n> Our answer:\n>\n> *10) Do you have science drivers that would require real-time exposure\n> time optimization\n> to obtain nearly constant single-visit limiting depth?*\n>\n> Our answer:\n>\n> Finally, if your science would benefit from a cadence methodology not\n> covered by these questions,\n> please enter a description of this methodology at http://ls.st/yqq\n>\n> —\n> You are receiving this because you were mentioned.\n> Reply to this email directly, view it on GitHub\n> <https://github.com/LSSTScienceCollaborations/ObservingStrategy/issues/505>,\n> or mute the thread\n> <https://github.com/notifications/unsubscribe-auth/ACA6YrAcOdhZ7-j4YyL4wuyTKotGpo3xks5qexlkgaJpZM4JiFRG>.\n>\n"}}
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