NASA SPHEREx · IPAC/IRSA DR1 · 0.75–5.0 µm
Module 08 · 5 min · Beginner

Survey Coverage

How to understand observation gaps

Live: how often SPHEREx looked at the north ecliptic pole (Cat's Eye Nebula)
IRSA SIA
Querying spherex_dr1… 0.0s
01

Footprints and visits

Each exposure covers a field about 3.5° across. Coverage depth varies, with the ecliptic poles observed most often.

02

Coverage is not detection

Being observed doesn't mean being detected. Depth, background and artefacts determine what could have been seen.

Practise in the skyNext: Scientific Verification
Imagery & science data: NASA / Caltech-IPAC SPHEREx DR1 via IRSA. Catalogue overlay: d3-celestial (BSD-3).StellarScope · created by Vaishal Anil & Parthiv — Team The Abyss, NASA Space Apps 2026AI: IFM K2 Horizon · NVIDIA Nemotron · Spectral Scout v2 (ONNX)