Archives

A chronological journey through everything published here.

3 posts 1 year
2026 3
April 1
20
Understanding Magnitudes: From Pogson to Gaia

Pogson's law, distance modulus, color indices, and a Color-Magnitude Diagram of the Pleiades from Gaia DR3 photometry.
March 2
25
Navigating the Sky with Gaia DR3 and Astropy SkyCoord

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.
20
First Light

What this site is about and what to expect.