OGLE-2017-BLG-1831

Tmax	2458057.857	±	0.236	(2017-10-31.36 UT)
tau	17.685	±	0.619
umin	0.185	±	0.004
Amax	5.464	±	0.105
Dmag	1.844	±	0.000
fbl	1.000	±	0.000
Ibl	19.006	±	0.001
I0	19.006	±	0.001

Last Epoch in data: 2458057.50527 (2017-10-31.01 UT)

Click here to download gzipped tar file containing full data set for this event
(including map.dat: O-IV VI map (CMD) or I-band map of the finding chart field).

Go to main EWS page where info on other events can be found.

• Finding chart (available also in FITS format (without cross) and Postscript).
  The image size is 2' x 2', North is up and East is to the left.
  If V-band database is available also the CMD of the finding chart field is displayed.
  
       

• Full span light curve (available also in Postscript format)
  
  

• Event light curve (available also in Postscript format)
  
  

• Photometry data file containing 5 columns: Hel.JD, I magnitude, magnitude error, seeing estimation (in pixels - 0.26"/pixel) and sky level.