Tag: learning-journal

All the articles with the tag "learning-journal".

• Understanding Magnitudes: From Pogson to Gaia

  20 Apr, 2026

  Pogson's law, distance modulus, color indices, and a Color-Magnitude Diagram of the Pleiades from Gaia DR3 photometry.

• Navigating the Sky with Gaia DR3 and Astropy SkyCoord

  25 Mar, 2026

  A step-by-step walkthrough of querying the Gaia archive, selecting cluster members by proper motion and parallax, and exploring coordinate systems — applied to the Pleiades and IC 2391.