Filter Profile Service
Carlos Rodrigo
A repository of Filter information for the VO.
Grant PID2020-112494GBI00 funded by
Astronomy (7905)Planetary science (616)Earth Obs. (2452)


Misc :Miscellaneous. Filters not included in another category.
Misc/APASS :APASS filters. Defined in terms of SDSS and Johnson systems.id:Misc/APASS.a
GaiaXPy base XML file. You can download here the GaiaXPy base XML file for the full Misc/APASS filter set. Please, take a look to the GaiaXPy web page and additional documentation for more information.

Misc/APASS.B4284.084313.354299.243613.135112.72843.113931.986.42e-9  APASS B filter, defined as identical to GCPD/Johnson.B_Landolt
Misc/APASS.sdss_g4669.534718.874639.273782.545549.261158.374035.435.55e-9  APASS g filter, defined as identical to SLOAN/SDSS.g
Misc/APASS.V5419.175446.495393.854796.166454.89870.583665.973.74e-9  APASS V filter, defined as identical to GCPD/Johnson.V_Landolt
Misc/APASS.sdss_r6156.336185.196121.965415.346989.141111.183190.222.52e-9  APASS r filter, defined as identical to SLOAN/SDSS.r
Misc/APASS.sdss_i7470.627499.707438.896689.478389.451044.542601.101.4e-9  APASS i filter, defined as identical to SLOAN/SDSS.i
X
Misc/APASS.sdss_i
Filter Description

Filter ID (?) :Misc/APASS.sdss_i
Description (?) :APASS i filter, defined as identical to SLOAN/SDSS.i
Phot.System (?) :SDSS
Detector Type (?) :Energy counter
Band Name (?) :i
Obs. Facility (?) :------
Instrument (?) :------
Comments (?) :------

 
Mathematical properties

Property Calculated Specified Unit
λref (?) : 7470.62 ------- (Angstrom)
λmean (?) : 7499.70 ------- (Angstrom)
λcen (?) : 7533.63 ------- (Angstrom)
λeff (?) : 7438.89 ------- (Angstrom)
λpeak (?) : 7105.00 ------- (Angstrom)
λpivot (?) : 7470.62 ------- (Angstrom)
λphot (?) : 7457.89 ------- (Angstrom)
λmin (?) : 6689.47 ------- (Angstrom)
λmax (?) : 8389.45 ------- (Angstrom)
Weff (?) : 1044.54 ------- (Angstrom)
FWHM (?) : 1238.95 ------- (Angstrom)
Af/AV (?) : 0.671 ------- ()
Fsun (?) : 127.38 ------- (erg/cm2/s/A)

Transmission

Data file: ascii, VOTableid:Misc/APASS.sdss_i
 

You can download here the GaiaXPy base XML file for the full Misc/APASS filter set.
Please, take a look to GaiaXPy documentation for more information.

- GaiaXPy base XML file.

   
Calibration properties

Vega System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 1.39722e-9(erg/cm2/s/A)
  ------- 2601.10(Jy)
ZP Type (?) : Pogson
PhotCal ID (?) : Misc/APASS.sdss_i/Vega
 

AB System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 1.95044e-9(erg/cm2/s/A)
  3631 3631.00(Jy)
b softening parameter (?) : 0.00000000018
ZP Type (?) : Asinh
PhotCal ID (?) : Misc/APASS.sdss_i/AB
 

ST System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 3.631e-9(erg/cm2/s/A)
  ------- 6759.57(Jy)
ZP Type (?) : Pogson
PhotCal ID (?) : Misc/APASS.sdss_i/ST
 

Reference for calibration: SDSS Flux calibration


Filter added: 2015-12-18 11:55:19
Last update: 2021-07-27 20:18:06
Misc/APASS.sdss_z8917.798961.498895.257960.4410833.251124.592241.118.45e-10  APASS z filter, defined as identical to SLOAN/SDSS.z
 

Filter Plots

© SVO,   (SVO Privacy Policy),   10970 filters available,   Last update: 2023-06-19
 
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 "Carlos Rodrigo", funded by MCIN/AEI/10.13039/501100011033/ through grant PID2020-112949GB-I00

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