Filter Profile Service
A repository of Filter information for the VO
Astronomy (6166)Planetary science (336)Earth Obs. (1901)


CFHT :Canada-France-Hawaii Telescope
CFHT/MegaCam :MegaPrime/MegaCam is the wide-field optical imaging facility at CFHT.

CFHT/MegaCam.u3676.123692.623751.883142.904018.28452.672149.334.58e-9CFHTMegaCamMegaCam 3rd generation u filter (installed in 2015)
CFHT/MegaCam.u_13799.433817.723884.743315.164261.79525.362762.055.49e-9CFHTMegaCamMegaCam 1st generation u filter (installed in 2002, valid until 2015).
CFHT/MegaCam.g4763.974824.014722.383938.885570.921292.783918.945.27e-9CFHTMegaCamMegaCam 3rd generation g filter (installed in 2015)
CFHT/MegaCam.g_14846.424899.924804.104038.125760.791293.803902.425.07e-9CFHTMegaCamMegaCam 1st generation g filter (installed in 2002, valid until 2015).
CFHT/MegaCam.gri5672.616017.765381.293951.308257.043714.963198.843.31e-9CFHTMegaCamMegaCam 3rd generation gri filter (installed in 2015).
CFHT/MegaCam.r_16245.266278.196207.895394.277046.081120.203115.342.42e-9CFHTMegaCamMegaCam 1st generation r filter (installed in 2002, valid until 2015).
CFHT/MegaCam.r6382.586425.466336.475614.817218.061381.633045.542.27e-9CFHTMegaCamMegaCam 3rd generation r filter (installed in 2015)
CFHT/MegaCam.i_27542.837584.477498.286663.068554.971409.452569.471.37e-9CFHTMegaCamMegaCam 2nd generation g filter (installed in 2007, valid until 2015).
X
CFHT/MegaCam.i_2
Filter Description

Filter ID (?) :CFHT/MegaCam.i_2
Description (?) :MegaCam 2nd generation g filter (installed in 2007, valid until 2015).
Phot.System (?) :MegaCam
Detector Type (?) :Photon counter
Band Name (?) :i
Obs. Facility (?) :CFHT
Instrument (?) :MegaCam
Comments (?) :The filter response includes the full telescope (mirror+optics+CCD) response and also 1.25 airmasses of atmospheric attenuation.

 
Mathematical properties

Property Calculated Specified Unit
λref (?) : 7542.83 ------- (Angstrom)
λmean (?) : 7584.47 ------- (Angstrom)
λcen (?) : 7610.57 ------- (Angstrom)
λeff (?) : 7498.28 ------- (Angstrom)
λpeak (?) : 7050.00 ------- (Angstrom)
λpivot (?) : 7542.83 ------- (Angstrom)
λphot (?) : 7525.52 ------- (Angstrom)
λmin (?) : 6663.06 ------- (Angstrom)
λmax (?) : 8554.97 ------- (Angstrom)
Weff (?) : 1409.45 ------- (Angstrom)
FWHM (?) : 1575.85 ------- (Angstrom)
Af/AV (?) : 0.668 ------- ()
Fsun (?) : ------- ------- (erg/cm2/s/A)

Transmission

Data file: ascii, VOTable

Reference for filter response: MegaPipe

Transmission components: Filter + CCD + Instrument + Other optical components + Atmosphere

   
Calibration properties

Vega System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 1.37006e-9(erg/cm2/s/A)
  ------- 2569.47(Jy)
ZP Type (?) : Pogson
PhotCal ID (?) : CFHT/MegaCam.i_2/Vega
 

AB System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 1.93608e-9(erg/cm2/s/A)
  ------- 3631.00(Jy)
ZP Type (?) : Pogson
PhotCal ID (?) : CFHT/MegaCam.i_2/AB
 

ST System
PropertySpecified Calculated Unit
Zero Point (?) : ------- 3.631e-9(erg/cm2/s/A)
  ------- 6809.72(Jy)
ZP Type (?) : Pogson
PhotCal ID (?) : CFHT/MegaCam.i_2/ST
 


Filter added: 2020-05-01 08:39:06
Last update: 2020-08-30 19:07:49
CFHT/MegaCam.i_17653.537690.487613.686742.258774.101220.832528.591.31e-9CFHTMegaCamMegaCam 1st generation g filter (installed in 2002, valid until 2007).
CFHT/MegaCam.i7682.937721.077641.476911.518630.941342.042516.751.29e-9CFHTMegaCamMegaCam 3rd generation i filter (installed in 2015)
CFHT/MegaCam.z_18815.008857.628794.487955.9710551.521040.062251.788.73e-10CFHTMegaCamMegaCam 1st generation z filter (installed in 2002, valid until 2015).
CFHT/MegaCam.z8979.629004.788972.598356.9410072.98788.112246.388.37e-10CFHTMegaCamMegaCam 3rd generation z filter (installed in 2015)
 

Filter Plots (using a common λ range)

(Plot them zoomed to their own λ range)

© SVO,   8400 filters available,   Last update: 2020-09-01
 
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: