Comments on: Planet Hunter Prepped for Tests http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/ Space and astronomy news Sun, 8 Nov 2009 10:14:11 -0600 http://wordpress.org/?v=2.8.5 hourly 1 By: Tim http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/comment-page-1/#comment-13647 Tim Fri, 22 Feb 2008 17:19:34 +0000 http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/#comment-13647 Mystic; you may find this paper helpful: "arXiv:0802.2722v1 [astro-ph] 19 Feb 2008 MOST Spacebased Photometry of the Transiting Exoplanet System HD 189733: Precise Timing Measurements for Transits Across an Active Star". MOST has been examining this problem for a few years. Mystic; you may find this paper helpful: "arXiv:0802.2722v1 [astro-ph] 19 Feb 2008
MOST Spacebased Photometry of the Transiting Exoplanet System HD 189733: Precise Timing Measurements for Transits Across an Active Star". MOST has been examining this problem for a few years.

]]> By: Chuck Lam http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/comment-page-1/#comment-13610 Chuck Lam Fri, 22 Feb 2008 13:53:30 +0000 http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/#comment-13610 To Mystic S. Very good question. I wonder how the Kepler engineers will deal with the possibility of sun-spot based false positives. To Mystic S. Very good question. I wonder how the Kepler engineers will deal with the possibility of sun-spot based false positives.

]]> By: mystic.smeg http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/comment-page-1/#comment-13585 mystic.smeg Fri, 22 Feb 2008 10:44:42 +0000 http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/#comment-13585 Maybe the biggest questions on my mind regarding this mission are, just how is this mission intended to "detect habitable earth like planets" from transits using just CCD technology without seeing the planet?? Granted the mission will be able to detect the smallest variable light levels from stars which might indicate there is a planet in orbit (as long as the transit happens in line of sight with the Earth!) - But just how does this “weigh� the transiting planet? How do they know its not just variable star-light (e.g. an earth-sized solar sun-spot passing by)? Maybe the biggest questions on my mind regarding this mission are, just how is this mission intended to "detect habitable earth like planets" from transits using just CCD technology without seeing the planet??

Granted the mission will be able to detect the smallest variable light levels from stars which might indicate there is a planet in orbit (as long as the transit happens in line of sight with the Earth!) – But just how does this “weighâ€? the transiting planet? How do they know its not just variable star-light (e.g. an earth-sized solar sun-spot passing by)?

]]> By: Meate http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/comment-page-1/#comment-13499 Meate Thu, 21 Feb 2008 19:40:37 +0000 http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/#comment-13499 From http://kepler.nasa.gov/about/ the detectors combined are 95 mega pixels (42 CCDs with 2200x1024 pixels) From http://kepler.nasa.gov/about/ the detectors combined are 95 mega pixels (42 CCDs with 2200×1024 pixels)

]]> By: PrimaCausa http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/comment-page-1/#comment-13445 PrimaCausa Thu, 21 Feb 2008 11:26:11 +0000 http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/#comment-13445 I wonder what the CCDs resolution will be in pixels. I wonder what the CCDs resolution will be in pixels.

]]> By: tacitus http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/comment-page-1/#comment-13415 tacitus Thu, 21 Feb 2008 07:38:36 +0000 http://www.universetoday.com/2008/02/20/planet-hunter-prepped-for-tests/#comment-13415 Very cool. Very cool.

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