Observations

Important

Data Preview 2 has not yet been released. This website is currently under development.

The sky coverage (fields), filters, and number of visits (cadence).

Sky coverage

Figure 1, below, gives an impression of the sky coverage of DP2. Caveat: a tract is shown on this map if it exists in the Butler sky map for DP2, and a tract outline being drawn does not mean that it will have a deep coadd image in every patch.

Figure 1: A preliminary map of the DP2 regions. Open black squares mark the locations of tracts in the skymaps (regions pre-identified for the creation of deep coadded images). Blue quadrilaterals are 19-sided HEALPix, similar in size to the LSSTCam 9.6 square degree field of view, of a density map of the number of visits. This plot is generated by one of the Tutorials.

Wide-fast-deep region

To be replaced with info about WFD. Describe lowdust, bulgy, and dusty_plane.

Small fields

To be replaced with info about the small field survey areas. Include their names and central coordinates in a table.

Table 1: Small field survey area central coordinates.

Field name	RA, Dec	RA, Dec (deg)
M49 (Virgo)	12h29m36s +08d00m00s	187.4, +8
Add new here	x	x

Deep drilling fields

To be replaced with info about the DDFs. Include their names and central coordinates in a table.

Table 2: Small field survey area central coordinates.

Field name	RA, Dec	RA, Dec (deg)
COSMOS	12h30m33s +02d13m48s	150.11, 2.23
Add new here	x	x

Filters

Table 3: Number of visits per band per field.

Sky region	u	g	r	i	z	y	Total
WFD	x	x	x	x	x	x	x
M49	x	x	x	x	x	x	x
COSMOS	x	x	x	x	x	x	x
Add new here	x	x	x	x	x	x	x

Epochs (nights)

Table 4: Number of nights, mean visits per night.

Sky region	Epochs (nights)	Visits/epoch
WFD	x	x
M49	x	x
COSMOS	x	x
Add new here	x	x

Coadd tracts

Table 5: Coadd tract IDs for each field

Field name	Tract IDs
M49	x, x
COSMOS	x
Add new here	x