Source
Type |
|
|
Will
you use AO188 ? |
|
This AO188
option is useful for only point
sources. This calculator
assumes FWHM ~ 0."07(JHKLM) and 0."2 (z) after
AO-correction. The
seeing profile is a Moffat function. See the encircled energy
diagram on AO188 webpage. |
Observation
band |
|
|
Target
magnitude |
|
UNIT: mag (for
Point sources), mag/arcsec^2
(for Extended sources) |
Slit
width |
|
arcsecond |
S/N
required |
|
|
Seeing |
arcsecond |
|
Binning |
pixels |
Note:
The flux of point source spectrum is already
summed over along the slit-length direction in the
calculation. You can still binning the spectra along the dispersion
direction for the point source. For extended sources, you can binning
both along the slit-length and along the dispersion
directions.
|
Sky
Subtraction loss |
- 0.376 mag |
-2.5 log (sqrt(2)) |