NĀSADĪYALIGHTCONECreated and developed by Biswajit Jana
2MRS layer loading
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Preparing observed rows
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Radial extent pending
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Look-back pending
Visible (displayed)—display sample
GPU-resident rows—catalogue memory
Radial extent—comoving distance
Look-back time—at z ceiling
Redshift range—user selected
Sky coverageSurvey-definedselection footprint
EXPLORER GUIDE
Survey navigation controls
Left dragOrbit around the observer-centred frame.
Right dragPan across the current view.
ScrollZoom toward or away from observed rows.
FlythroughRun a guided route; any manual interaction stops it.
T / PSwitch observatory theme / presentation focus.
B / 1 / SSave view / restore view / capture viewport.
The DESI North/South footprint is measurement geometry. It should not be interpreted as a reconstructed all-sky density field or as physically disconnected structure.
OBSERVATORY COMMAND
Navigate the measured lightcone
Destinations
Layers and analysis
Workspace
ANALYSIS
Catalogue analysis
Live plots computed from the currently loaded observed rows. Every plot can be hidden.
Redshift distribution
Tracer class counts
Sky footprint (RA / Dec)
Look-back time
NĀSADĪYA LIGHTCONE
Opening the observed local Universe
Reading the 2MRS browser catalogue and its source provenance…