KRISHNA X SPACE

SPHEREx Time-Domain Explorer

Infrared Blink Comparator & Planet X Discovery Engine · 102 Spectral Channels · 0.75–5 µm

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Spot what moves.

Enter a target and press Load. SPHEREx images of that patch of sky are fetched from NASA/IPAC IRSA, aligned north-up, stacked per survey visit and played as a blink animation.

R D5+6 G D3+4 B D1+2

Speed 3 fps snap

Find Movers

#	RA / Dec	μ	PA	S/N	Visits	Gaia DR3

Pink = no Gaia DR3 counterpart (worth a look) · green = known Gaia mover · yellow = Gaia motion differs · grey = Gaia says static (likely spurious). Candidates are suggestions: check them with Measure, the flags and several visits.

binned (R≈40) log flux colour by

Aperture photometry (r = 2 px, local-background annulus) at the target in every exposure. SPHEREx's linear-variable filters give each exposure a different wavelength, so all exposures together form a spectrum built on the fly.

divide by mean spectrum

Normalised mode divides each measurement by the median spectrum at its wavelength, so brightness changes in time stand out from spectral shape — useful for variables such as RW Aur and R Dra.

only flagged at target

Date (UTC)	Array	λ µm	Flux µJy	Flags at target	FITS

Survey

Interactive sky map (Aladin Lite) of the same field in other surveys. Blue box = your field of view, green circles = Gaia DR3 stars (click one for its data). Drag to pan, scroll to zoom. If the map stays black, pick another survey: the "(IRSA)" ones come from NASA/IPAC, the "(CDS)" ones from Strasbourg.

Objects you flagged with Measure → Save Candidate. They are unconfirmed until checked: make sure the object is in several visits and arrays, is not a Gaia/WISE star with known proper motion, and has no FLAGS (ghost, streak, persistence…) at its position. Saved on the server in data/candidates.json.

Errors and warnings from the archive, catalogues and the page. Nothing here stops the viewer unless it says so.