Re: why do i get a straight line transit fit?
Posted by karenacollins on Apr 05, 2019; 12:12pm
URL: http://astroimagej.170.s1.nabble.com/why-do-i-get-a-straight-line-transit-fit-tp1120p1122.html
The "left" and "right" markers on Multi-plot Main should be set to the approximate apparent time of start of ingress (t0) and end of egress (t4), respectively. In other words, make sure they are set similar to your predicted ingress and egress markers in this case (those two are for display purposes only to mark the predicted times, rather than the actual apparent times). Also, it looks like you have an airmass trend, so I would add airmass detrending to the model.
If that doesn't do the trick, let us know.
Karen
URL: http://astroimagej.170.s1.nabble.com/why-do-i-get-a-straight-line-transit-fit-tp1120p1122.html
The "left" and "right" markers on Multi-plot Main should be set to the approximate apparent time of start of ingress (t0) and end of egress (t4), respectively. In other words, make sure they are set similar to your predicted ingress and egress markers in this case (those two are for display purposes only to mark the predicted times, rather than the actual apparent times). Also, it looks like you have an airmass trend, so I would add airmass detrending to the model.
If that doesn't do the trick, let us know.
Karen
On 4/5/2019 7:14 AM, gboyle [via AstroImageJ] wrote:
anyone know why my data results in a straight line transit fit?
data looks like i should have a decent light curve but for some reason i just get a straight line...?
thanks
gavin
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