{"action":"created","issue":{"url":"https://api.github.com/repos/lofar-astron/factor/issues/180","repository_url":"https://api.github.com/repos/lofar-astron/factor","labels_url":"https://api.github.com/repos/lofar-astron/factor/issues/180/labels{/name}","comments_url":"https://api.github.com/repos/lofar-astron/factor/issues/180/comments","events_url":"https://api.github.com/repos/lofar-astron/factor/issues/180/events","html_url":"https://github.com/lofar-astron/factor/issues/180","id":201976140,"number":180,"title":"Deep negatives bowls in selfcal/*low_MFS-image*","user":{"login":"botteon","id":23218111,"avatar_url":"https://avatars.githubusercontent.com/u/23218111?v=3","gravatar_id":"","url":"https://api.github.com/users/botteon","html_url":"https://github.com/botteon","followers_url":"https://api.github.com/users/botteon/followers","following_url":"https://api.github.com/users/botteon/following{/other_user}","gists_url":"https://api.github.com/users/botteon/gists{/gist_id}","starred_url":"https://api.github.com/users/botteon/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/botteon/subscriptions","organizations_url":"https://api.github.com/users/botteon/orgs","repos_url":"https://api.github.com/users/botteon/repos","events_url":"https://api.github.com/users/botteon/events{/privacy}","received_events_url":"https://api.github.com/users/botteon/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":4,"created_at":"2017-01-19T21:09:32Z","updated_at":"2017-01-20T12:08:55Z","closed_at":null,"body":"My fist facet (patch_653) present deep negatives bowls in the *low_MFS-image*.\r\nNote that the attached image was made with 80SBs but the problem is present even with less (40SBs) or more (>100SBs).\r\nThe cleaning mask is picked up correctly. As you can see switching on/off the multires doesn't help (wrong label in the screenshot, it is multires, not multiscale).\r\n\r\n![github](https://cloud.githubusercontent.com/assets/23218111/22125307/731b1cdc-de93-11e6-9d5f-3e96ba1cef5f.jpg)\r\n\r\nI don't have errors during the selfcal, indeed the *full-MFS-image* looks good (with multires=yes). \r\n\r\nWhat about the negatives in facet_patch_579 (my target)? Sources are subtracted in the Init-Subtract step, but I don't understand why they are so different switching the multires on/off.\r\n\r\nIf I continue the run, the selfcal of next facets proceeds without errors and *full-MFS-image* looks good, while the low res images present bowls. After 6 facets calibrated I image only the target facet and this is what I obtain:\r\n\r\n![facetimage](https://cloud.githubusercontent.com/assets/23218111/22125276/5eaed144-de93-11e6-88d3-3d20c2a7d253.jpg)\r\n\r\nHas anybody already seen this behaviour? What is going on?"},"comment":{"url":"https://api.github.com/repos/lofar-astron/factor/issues/comments/274057854","html_url":"https://github.com/lofar-astron/factor/issues/180#issuecomment-274057854","issue_url":"https://api.github.com/repos/lofar-astron/factor/issues/180","id":274057854,"user":{"login":"darafferty","id":5547918,"avatar_url":"https://avatars.githubusercontent.com/u/5547918?v=3","gravatar_id":"","url":"https://api.github.com/users/darafferty","html_url":"https://github.com/darafferty","followers_url":"https://api.github.com/users/darafferty/followers","following_url":"https://api.github.com/users/darafferty/following{/other_user}","gists_url":"https://api.github.com/users/darafferty/gists{/gist_id}","starred_url":"https://api.github.com/users/darafferty/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/darafferty/subscriptions","organizations_url":"https://api.github.com/users/darafferty/orgs","repos_url":"https://api.github.com/users/darafferty/repos","events_url":"https://api.github.com/users/darafferty/events{/privacy}","received_events_url":"https://api.github.com/users/darafferty/received_events","type":"User","site_admin":false},"created_at":"2017-01-20T12:08:55Z","updated_at":"2017-01-20T12:08:55Z","body":"It will only selfcal the one that was reset"}}
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