Abstract Details
| Name: Tejas P Affiliation: IIT Hyderabad Conference ID: ASI2018_1720 Title : Python Code to analyse Sun's white light images from Kodaikanal Observatory Authors and Co-Authors : Tejas, P ^{1} Hiremath, K.M ^{2} 1. Indian Institute of Technology Hyderabad Sangareddy, Khandi, Telangana 502285 2.Indian Institute of Astrophysics, Bengaluru-560034 Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : By using historical Kodaikanal observatory's white light images, a python code was developed that achieves the following tasks: Detection of edge of the solar disk of the image of the Sun. Fitting a circle to the detected edge, and determining the center and radius of the detected edge. Removing the limb darkening. Computing the heliographic coordinates of all the pixels in the image. Applying a sequence of morphological transformations and thresholding to isolate only the sunspots from the image. Removing the equatorial line from the image. Labeling all the connected components in the image. Separating the sunspots from the image of the Sun. Calculation of average heliographic coordinates of the sunspots. Separation of umbra and penumbra and computation of their areas. |