Table information for 'lightmeter.stations'

General

Table Description: Stations in the lightmeter network

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

Resource Description: We give continuous night and day light measurements at all natural outdoor light levels by a network of low-cost lightmeters. Developed to start simple, global continuous high cadence monitoring of night sky brightness and artificial night sky brightening (light pollution) in 2009. The lightmeter network is a project of the Thüringer Landessternwarte, Tautenburg, Germany and the Kuffner-Sternwarte society at the Kuffner-Observatory, Vienna, Austria. It started as part of the Dark Skies Awareness cornerstone of the International Year of Astronomy.

For a list of all services and tables belonging to this table's resource, see Information on resource 'Lightmeter Data'

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 http://lightmeter.astronomy2009.at either in addition to or instead of the service reference.

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

@MISC{vo:lightmeter_stati,
  year=2009,
  title={Lightmeter Data},
  author={Wuchterl, G. and The Lightmeter community},
  url={https://dc.g-vo.org/tableinfo/lightmeter.stations},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

This database of lightmeter measurements is made available under the Open Database License: http://opendatacommons.org/licenses/odbl/1.0/.

Any rights in individual contents of the database are licensed under the Database Contents License: http://opendatacommons.org/licenses/dbcl/1.0/

Columns

Sorted by DB column index. [Sort alphabetically]

NameTable Head DescriptionUnitUCD
stationId Station ID Identifier of the measuring station, starting with an ISO CC N/A meta.id;meta.main
lat Lat. Latitude of the observing station deg pos.earth.lat
long Long. Longitude of the observing station deg pos.earth.lon
height Height Height above sea level m pos.earth.altitude
fullname Name Full name of the station N/A meta.id
devtype Type Device type (as in: IYA Lightmeter, SQM, ...) N/A meta.code;instr
timeCorrection dt Seconds to add to this stations reported times to obtain UTC N/A N/A
calibA Cal. a Calibration parameter, a [Note cal] N/A instr.calib
calibB Cal. b Calibration parameter, b [Note cal] N/A instr.calib
calibC Cal. c Calibration parameter, c [Note cal] W.m**-2 instr.calib
calibD Cal. d Calibration parameter, d [Note cal] K**-1 instr.calib

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 cal

The calibration parameters are used to convert raw counts to actual fluxes using the formula:

Phi = c (b (a exp(n (1+dT)/a)-1)+n)

where n is the raw count, T the instrument temperature and Phi is a flux in units of c.