RST·DATA

Time Domain — Northern Field

sim_hltds-north_f146_014 · CCS-HLTDS · WFI SCA18

simulated

Procedural preview

Not sky data · awaiting first light

1:1 footprint

7.5′ across

0 sources drawn

Band

Stretch

Gain 1.00×

Drag to pan, scroll to zoom, double-click to zoom in. Arrow keys pan, + and zoom, 0 resets. Switching bands re-colours the same patch of sky rather than replacing it, so you can blink between filters the way you would with real multiband imaging.

About this field

The northern time-domain pointing, close to the north ecliptic pole where the observatory's field of regard stays open year-round.

Program
High Latitude Time Domain Survey
Program ID
CCS-HLTDS
Field centre RA
18h00m00.00s
Field centre Dec
+66°30′00.0″
Galactic latitude
29.8°
Field character
deep

Product status

A pre-flight simulation product. Generated on the ground to build and test the calibration pipeline before launch — useful for developing analysis code, but it is synthetic, not sky.

Exposure

Exposure ID
sim_hltds-north_f146_014
Instrument
WFI
Detector
SCA18
Optical element
F146
Data level
L2
Integration
13m 48s
Resultants
69
Mid-exposure
28 Sept 2025, 04:05 UTC
Mission day
L+-336.13
Product size
191 MB
5σ point-source depth
27.79 AB

Pointing

RA (J2000)
17h59m56.07s
Dec (J2000)
+66°35′53.9″
RA (deg)
269.983618
Dec (deg)
66.598313
Footprint
0.125° on a side
Pixel scale
0.11″/px

Band

F1461.464 µm pivot
0.4 µmvisible → near-infrared2.4 µm

Very wide band for maximum depth — the microlensing workhorse.

Access

Roman products are distributed through MAST at STScI. Files follow the naming convention below; nothing is downloadable from this site.

sim_hltds-north_f146_014_l2.asdf

Open MAST

More of Time Domain — Northern Field

All products in this field →

The image above is procedurally generated. Source positions, colours and crowding are derived from the field's galactic latitude and character and from the band's pivot wavelength, and every exposure of a field draws the same sky so dithers line up — but none of it is data from the telescope.