Filter Profile Service
A repository of Filter information for the VO
Astronomy (6231)Planetary science (382)Earth Obs. (2389)


Swift :The Swift Gamma-Ray Burst Mission
Swift/UVOT :Swift's Ultraviolet/Optical Telescope (UVOT)

Swift/UVOT.UVW22054.612140.262085.731597.493479.70667.73759.995.24e-9SwiftUVOTUVOT UVW2 filter effective area
Swift/UVOT.UVM22246.432272.712245.781699.082964.30533.85770.294.58e-9SwiftUVOTUVOT UVM2 filter effective area
Swift/UVOT.UVW12580.752688.462684.141614.344730.01801.92981.364.08e-9SwiftUVOTUVOT UVW1 filter effective area
Swift/UVOT.U3467.053492.673520.953017.594781.22662.501480.553.58e-9SwiftUVOTUVOT U filter effective area
X
Swift/UVOT.U
Filter Description

Filter ID (?) :Swift/UVOT.U
Description (?) :UVOT U filter effective area
Phot.System (?) :UVOT
Detector Type (?) :Photon counter
Band Name (?) :U
Obs. Facility (?) :Swift
Instrument (?) :UVOT
Comments (?) :Take into account that there is a time-dependent, and filter-dependent decline in sensitivity for the UVOT (which reaches as much as ~30% in UVW2) since launch, and that the filter effective areas provided reflect the case at approximately mission start, so any computation of expected output in the UVOT at a given epoch after mission start, should take these degradation factors into account. The current document describing the degradation is available at

https://heasarc.gsfc.nasa.gov/docs/heasarc/caldb/swift/docs/uvot/

 
Mathematical properties

Property Calculated Specified Unit
λref (?) : 3467.05 ------- (Angstrom)
λmean (?) : 3492.67 ------- (Angstrom)
λcen (?) : 3468.51 ------- (Angstrom)
λeff (?) : 3520.95 ------- (Angstrom)
λpeak (?) : 3692.50 ------- (Angstrom)
λpivot (?) : 3467.05 ------- (Angstrom)
λphot (?) : 3541.22 ------- (Angstrom)
λmin (?) : 3017.59 ------- (Angstrom)
λmax (?) : 4781.22 ------- (Angstrom)
Weff (?) : 662.50 ------- (Angstrom)
FWHM (?) : 778.49 ------- (Angstrom)
Af/AV (?) : 1.62 ------- ()
Fsun (?) : 97.02 ------- (erg/cm2/s/A)

Effective area

Data file: ascii, VOTable

Reference for filter response: HEASARC CALDB

Transmission components: Filter + Instrument

   
Calibration properties

Vega System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 3.58033e-9(erg/cm2/s/A)
  ------- 1480.55(Jy)
ZP Type (?) : Pogson
PhotCal ID (?) : Swift/UVOT.U/Vega
 

AB System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 8.78064e-9(erg/cm2/s/A)
  ------- 3631.00(Jy)
ZP Type (?) : Pogson
PhotCal ID (?) : Swift/UVOT.U/AB
 

ST System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 3.631e-9(erg/cm2/s/A)
  ------- 1501.50(Jy)
ZP Type (?) : Pogson
PhotCal ID (?) : Swift/UVOT.U/ST
 


Filter added: 2014-01-17 16:30:37
Last update: 2020-12-10 16:34:07
Swift/UVOT.white3325.214003.783885.681597.497820.433548.072268.104.5e-9SwiftUVOTUVOT white filter effective area
Swift/UVOT.B4349.564377.974346.253702.384995.23866.224059.846.44e-9SwiftUVOTUVOT B filter effective area
Swift/UVOT.V5425.335439.645411.434932.606001.23655.673636.183.72e-9SwiftUVOTUVOT V filter effective area
 

Filter Plots

© SVO,   8999 filters available,   Last update: 2021-01-18
 
If your research benefits from the use of the SVO Filter Profile Service, we would appreciate if you could include the following acknowledgement in your publication:

This research has made use of the SVO Filter Profile Service (http://svo2.cab.inta-csic.es/theory/fps/) supported from the Spanish MINECO through grant AYA2017-84089

and we would appreciate if you could include the following references in your publication: