GSoC – Final

Astrometry The goal of the project was to get an astronomical image and convert its pixel coordinates to sky coordinates without any prior information about the input image’s location. It’s a very important feature because it allows astronomers to analyze images coming directly from telescopes as these images don’t have any information about the skyContinue reading “GSoC – Final”

GSoC Post 4

Hi! In the last weeks we have finished the Astrometry linear part programming. 🙂 We added an option to solve for more pixel catalogs, which are a part of a field image. This is an important case in real world scenarios. The image below is a good illustration of this: we have a field andContinue reading “GSoC Post 4”

GSoC Post 3

Hi! In my last post I mentioned that we would start calculating the distortions contained in the image. But we followed a different path! As the linear part was ready, we first worked on making some plots (scatter plots with side histograms of the difference in pixel scale of the celestial coordinates measured with theContinue reading “GSoC Post 3”

GSoC Post 2

Hi! In the previous post I mentioned that the matching part between the quads was done. Following that, the past 2 weeks were devoted to: first get the theta (rotation) and scale values related to each quad. To do this, we use a linear transformation between the pixel coordinates and the projection plane coordinates (thatContinue reading “GSoC Post 2”

GSoC Post 1

Hey there. I am working on the Astrometry project from Gnuastro and I will explain below the first things that I have been doing. Basically, we have two catalogs: one is the query catalog, which we want to find its wcs, and the reference catalog, that gives some stars positions in celestial coordinates. We beginContinue reading “GSoC Post 1”

GSoC Post 0

Hello! I’m writing this first post to say that I’m sending a proposal to participate in GSoC in the Gnuastro (from OpenAstronomy) project called Astrometry. The goal of the project is to get an astronomical image and convert its pixel coordinates to sky coordinates without any prior information about the input image’s location. It’s aContinue reading “GSoC Post 0”