Table information for 'rome.images'

General

This table is available for ADQL queries and through the TAP endpoint.

Resource Description: The ROME/REA (Robotic Observations of Microlensing Events/Reactive Event Assessment) Survey was a Key Project at Las Cumbres Observatory (hereafter LCO) which continuously monitored 20 selected fields (3.76 sq.deg.) in the Galactic Bulge throughout their seasonal visibility window over a three-year period, between March 2017 and March 2020. Observations were made in three optical passbands (SDSS g', r', i'), and LCO's multi-site telescope network enabled the survey to achieve a typical cadence of ~10hrs in i' and ~15hrs in g' and r'. In addition, intervals of higher cadence (<1hr) data were obtained during monitoring of key microlensing events within the fields. This catalog includes the full timeseries photometry for all ~8 million stars, down to a limiting magnitude of i~18mag.

For a list of all services and tables belonging to this table's resource, see Information on resource 'ROME/REA Timeseries Photometry Data Release 1'

Resource Reference URL: Resource info

Citing this table

This table has an associated publication. If you use data from it, it may be appropriate to reference 2024PASP..136f4501S (ADS BibTeX entry for the publication) either in addition to or instead of the service reference.

To cite the table as such, we suggest the following BibTeX entry:

@MISC{vo:rome_images,
  year=2024,
  title={{ROME}/{REA} Timeseries Photometry Data Release 1},
  author={Street, R.A. and Bachelet, E. and Tsapras, Y. and Hundertmark, M.P.G. and Bozza, V. and Bramich, D.M. and Cassan, A. and Dominik, M. and Figuera Jaimes, R. and Horne, K. and Mao, S. and Saha, A. and Wambsganss, J. and Zang, W.},
  url={http://dc.g-vo.org/tableinfo/rome.images},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Resource Documentation

As a short example for how to explore this data using VO protocols, try this:

Your desktop could then look somewhat like this:

/rome/q/sdl/static/rome-action.jpeg

Columns

Sorted alphabetically. [Sort by DB column index]

NameTable Head DescriptionUnitUCD
accref Product key Access key for the data N/A meta.ref.url
accsize File size Size of the data in bytes byte VOX:Image_FileSize
airmass Airmass Airmass for this observation N/A obs.airMass
dataset_code Dataset Id Dataset this image belongs to (a dataset in ROME/REA is the collection of all images from a given instrument) N/A N/A
embargo Embargo ends Date the data will become/became public yr N/A
exposure Exposure Exposure time for this image s time.duration;obs.exposure
field Field ROME field the object was observed in N/A meta.id;obs.field
filename File Name Upstream file name for this image N/A N/A
filter Filter Filter this image was taken with N/A meta.id;instr.filter
frac_sat_pix |Sat|/pix Fraction of saturated pixels on this image N/A phot.count;arith.ratio
hjd Hjd HJD (i.e., UTC with light-time corrections for the solar centre) of the midpoint of exposure d time.epoch
image_index Image_index Internal index of the image within a dataset, starting from 0. This correspondds to the index of a photometry row in the photometry hdf5s N/A meta.id
mime Type MIME type of the file served N/A meta.code.mime
moon_ang_separation Moon dist. Angular Distance to the moon deg instr.param;pos.angDistance
moon_fraction Moon_fraction Moon phase, 0=new moon N/A instr.param
nstars N Number of photometry points extracted from this image N/A meta.number
owner Owner Owner of the data N/A N/A
qc_flag Flags Quality flags; null means a good image, for other codes see table note [Note q] N/A meta.code.qual
rome_id Image Id Identifier for the ROME/REA image. This is field*100000+per-field-index N/A meta.id;meta.main

Columns that are parts of indices are marked like this.

Other

The following services may use the data contained in this table:

VOResource

VO nerds may sometimes need VOResource XML for this table.

Notes

Note q

qc_flag is a bitmap, where 0 means a good image. In the light curves we serve, only points with qc_flag=0 are retained, and you should only use other data if you really know what you are doing. In case you get ROME data from other sources, here is what the flags mean:

1 No valid photometric measurement possible by stage 6
2 Image photometry displayed excessive scatter (mostly bad seeing)
4 Data point failed phot scale factor/exposure time metric
8 Low quality image resampling
16 Difference image exhibited high residuals