Spectroscopic Sensitivity

These sensitivity have been estimated from spectroscopic standard stars observation with 2.0" width slit, 3 pixels binning in spatial direction and 2 pixels binning in dispersion direction. So 'pix' described below means a 2-binned pixel.


Memo: AB mag=-2.5 log [f_lambda(erg cm^-2 A^-1 s^-1)] -5.0 log [lambda (A)] -2.41

Overview

Dispersion is given after 2 pixel binning in wavelength direction.

Unit used here is

count/pix/exptime
------------------
 {erg cm^-2 A^-1 s^-1}

e.g., 1E16 means that you will get 1 count/pix per 1 sec exposure when you observe an object with 1e-16 (erg cm^-2 A^-1 s^-1).

2.6 Angstrom/pix
300select.gif

Red: B300 + Y47 +1st order
White (short wavelength): B300 + L600 + 1st order
White (long wavelength): R300 + O58 + 1st order
Light blue: R300 + Y47 + 1st order
Blue: B300 + C50 + 1st order
Green: 150 + C50 + 2nd order


5.2 Angstrom/pix
150select.gif

Red: 150 + Y47 +1st order
Blue: 150 + C50 + 1st order
White: 75 + C50 + 2nd order
Green: 75 + L600 + 2nd order


Detailed Data

Grism

Filter

Order

Plots

B300

Y47

1

Plot

 

L600

1

Plot

 

C50

1

Plot

R300

L600

1

Plot

 

C50

1

Plot

 

L600

2

Plot

 

C50

2

Plot

 

O58

1

Plot

 

Y47

1

Plot

150

C50

1

Plot

 

C50

2

Plot

 

Y47

1

Plot

75

C50

1

Plot

 

C50

2

Plot

 

L600

1

Plot

 

L600

2

Plot

 

O58

1

Plot