Centro de Estudios de Física del Cosmos de Aragón
JAST/T80/JPLUS Exposure Time Calculator
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See Important Update (17th August, 2018)
Observational conditions
J-PLUS Filters
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ALL
uJAVA
J0378
J0395
J0410
J0430
gSDSS
J0515
rSDSS
J0660
iSDSS
J0861
zSDSS
Sky conditions
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Sky Brightness:
Dark
Gray
Bright
Airmass:
Seeing (arcsec):
Object type
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Point source (mag)
Photometric Aperture: (")
Extended object (mag/arcsec
2
)
Note:
For point-like sources, the results will be given as a function of the photometric aperture.
Exposure Time Calculator
Fill in the boxes leaving empty the one you want to compute (except the number of exposures).
WARNING: Computations resulting in exposure times close to zero will hang up the procedure
Signal to noise ratio (*)
Magnitude (AB) (*)
TOTAL
Exposure time [s]
Number of Exposures
(*) For point like sources, S/N within aperture and magnitude is total magnitude For extended objects, S/N within a pixel and magnitude refers to magnitudes/arcsec
2
Auxiliary Plots
Magnitude vs Signal to Noise
Magnitude range:
S/N range (*):
Exposure Time
NEXP:
Exposure Time vs Signal to Noise
Exposure Time range:
NEXP:
S/N range (*):
Magnitude
Magnitude vs Exposure Time
Exposure Time range:
NEXP:
Magnitude range:
S/N (*)
(*) For point like sources, S/N within aperture. For extended objects, S/N within a pixel.
Authors: Nicolas Gruel; Jesús Varela; David Cristóbal Comments, bugs, and suggestions: jvarela at cefca.es