About AstroNot
Explore real telescope observations and learn what they reveal about the night sky.
Mission
AstroNot brings public discovery, astronomy education, and scientific tools together. Start with a telescope image, learn how it was made, or work with observations in the archive.
Explore the skyA simple guide for users
Guide for Non-Researchers
Start with Explore and pick an object that catches your eye, such as Saturn or the Orion Nebula. Visit Learn to see how different kinds of light reveal different features in the same galaxy. When you’re ready to try working with an image, follow the FITS guide and load the included SPHEREx example. You can also browse Non-researcher Tools to see ideas for future activities, from finding constellations to comparing planet sizes.
Guide for Researchers
Start in Scientific Tools. Use Observation Search to find SPHEREx data by sky position, date, or wavelength. Download a cutout, then open it in FITS Viewer to check its observation ID, time, and units. Use Time Machine to compare observations from different dates, or Spectrophotometry to measure flux at a chosen sky position. When exporting a result, check which observations went into it and whether uncertainty estimates were available for your measurement.
Team
Team profiles are coming soon.