Complejo Astronómico El Leoncito
2.15 m "Jorge Sahade" Telescope
Exposure Time, SNR and Limiting Magnitude Calculator
Telescope:
Primary
m
Secondary
m
Scale
arcsec/mm
Instrument
Direct
Polarimeter
Spectrograph
Focal Reducer
CASPOL
CASPROF
REOSC
B&C
EBASIM
Detector
Camera
Gain
[e
-
/ADU]
Read Noise
[e
-
]
Clock
Dark Curr
[e
-
/h/pix]
Roper-2048B
1
2
3
100 Kkz
1 Mhz
Roper-1300B
1
2
3
100 Kkz
1 Mhz
Tektronic-1024
1
4
100 Mhz
Binning:
1x1
2x2
3x3
4x4
5x5
6x6
7x7
8x8
9x9
Instrumental response
Transmission
U
B
V
R
I
Free
New
Telescope
Focal Reducer
Roper-2048B
Filter
User defined QE
Zero point calibration
U
B
V
R
I
Free
New
Δzp
Atmosphere
FWHM:
arcsec
pix
Air Mass:
Moon's age:
0 "New Moon"
1
2
3
4
5
6
7 "Quarter Moon"
8
9
10
11
12
13
14 "Full Moon"
days
Filter
U
B
V
R
I
Free
New
Sky0 [mag/arsec
2
]
User's Background [ADU/pix]
Extinction Coeficient K1
Calculate
Exposure Time
SNR value
Magnitude
sec
mag
Number of expositions
Source type
Point
Extended
Photometric aperture (radius)
fwhm
arcsec
pix
Filter
U
B
V
R
I
Free
New
Result: