Index of http://www.stelab.nagoya-u.ac.jp/~moastaff
Limiting Magnitude (for gb21-8-0)
5σ Limiting Magnutude = -2.5log(5×Noisesky) + Const
Noisesky = √(A×Fluxsky/gain)
A = r×r×π
r:radius of PSF = 1 arcsec
gain = 2.3
| Exposure(second) |
Band |
Fluxsky(ADU/arcsec2) |
Const |
5σlimiting magnitude |
| 120 |
V |
2054 |
28.6 |
22.5 |
| 90 |
I |
3294 |
27.6 |
21.3 |
| 60 |
I |
2054 |
27.3 |
21.2 |
| 60 |
MOA-Red |
3005 |
27.8 |
21.5(I-Band) |
Note:These limiting magnitudes are calculated without color index.