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'

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_stations,
  year=2009,
  title={Lightmeter Data},
  author={Wuchterl, G.; The Lightmeter community},
  url={http://dc.zah.uni-heidelberg.de/tableinfo/lightmeter.stations},
  howpublished={{VO} resource provided by the {GAVO} Data Center}
}

Fields

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.long
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.

Copyright and such:

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/