tag:blogger.com,1999:blog-1074502515186128083.post6708994938622665433..comments2023-11-14T12:59:44.505-05:00Comments on Hogg's Ideas: Can you fix charge-transfer inefficiency without a theory-driven model?Hogghttp://www.blogger.com/profile/18398397408280534592noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-1074502515186128083.post-45065113201876980572012-11-26T09:58:35.179-05:002012-11-26T09:58:35.179-05:00A related problem, for which there are reams of da...A related problem, for which there are reams of data, is to look at CTE in the Hubble ACS camera. In the Panchromatic Hubble Andromeda Treasury (PHAT) survey the CTE is a pretty big issue, and since it varies with background rate and we cover a huge range of unresolved background light levels (from the core of Andromeda to its outskirts), getting it wrong leads to false gradients.<br /><br />STScI has a "cosmetic" CTE repair algorithm, but I don't think it is justified or even uses a halfway-realistic model of the effect.<br /><br />I understand the idea here is to correct for this effect *without* a model, but since in the HST world there isn't even a model-based solution (that I know of), that would be a good start.<br /><br />dstnhttps://www.blogger.com/profile/05839297702749540630noreply@blogger.com