RA 269.4521° · Dec +4.6934° · Click any star to extract 102-band spectrum
Optical Layers & CalibrationSPHEREx L2
Zodiacal Light Subtraction (ZODI)
ESA Gaia DR3 + Motion Vectors
Dipole & Variable Reticles
Contamination FLAGS Bitmask
J2000 WCS Coordinate Grid
Molecular Absorption Lines
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NASA SPACE APPS CHALLENGE 2026 · PLANET X AND SPHEREx
Executive Judging & Scientific Verification Brief
CHRONOS // SPHEREx (chronosspherex.earth) is an interactive time-domain infrared discovery platform built on live
NASA/IPAC IRSA SIAv2 open data (spherex_dr1 & spherex_qr3).
It combines multi-epoch astrometric blinking, split-curtain comparison, dipole difference imaging, and on-the-fly 102-channel spectroscopy (0.75–5.00 μm).
1. Validity & Astrometric Epoch Propagation
Propagates J2000/2010 reference coordinates to the 2025–2026 SPHEREx observation epoch via 3D space motion (e.g. Barnard's Star +266.5" N, WISE 0855 −121.5" W), reprojects raw FITS cutouts onto North-Up WCS grids, and anchors 102-band spectra to real 2MASS + WISE mJy fluxes.
2. Live Space Agency Data (IRSA SIAv2 + Gator + IBE)
Queries live NASA/IPAC IRSA SIAv2 exposures, live IRSA Gator catalogs (gaia_dr3_source & allwise_p3as_psd), 7-HDU Level-2 FITS cutouts, 32-bit HDU 2 FLAGS bitmasks, and CSA NEOSSat (CADC) cross-links.
3. Data Provenance & Forward-Modeling Methodology
All sky coordinates, observation timestamps (MJD), spacecraft WCS footprints, and native detector cutouts (RAW_FITS) are fetched from official NASA/IPAC IRSA (SIAv2, IBE, and Gator gaia_dr3_source + allwise_p3as_psd) archives. Because individual SPHEREx Level-2 frames sample a single LVF strip per pass, MODEL_CUBE reconstructs continuous 6-band + 102-channel spectrophotometry anchored to cataloged 2MASS/WISE flux densities (mJy); switch to RAW_FITS anytime to inspect un-modeled North-Up WCS NASA detector cutouts.
chronosspherex.earth · Independent open-science project created for NASA Space Apps Challenge 2026; not an official NASA website.