| Calar Alto
Homepage |
MPIA
Homepage |
| Array Type | Rockwell 1024 x 1024 pixel HAWAII array:
HgCdTe detector + Si MOSFET non-destructive readout |
| Pixel scale | 0.3961±0.0004 arcsec/pixel |
| Field of View | 405.6 arcsec square (6.76 arcmin square) |
| Wavelenth range | 1.0 µm - 2.5 µm |
| Telescope | Calar Alto 3.5m (prime focus) |
Sensitivity:
For point sources to the 5 sigma level (i.e. the brightest pixel in
the centre of the star is at 5 times the background noise), with two minutes
integration time (not including any overheads for detector read out etc.),
and with a seeing of 1 arcsec FWHM.
| K' = 17.5 mag | H = 18.1 mag | J = 19.2 mag |
Filter options:
All filter data determined at 77 Kelvin! A tracing of the filter transmission curve (sorry for the low-quality) can be found by clicking on the filter name (please, note that the transmission curve have been determined in parallel beam).
Last update: Jan 2002
| Filter | Central
Wavelength (µm) |
FWHM
Width (µm) |
Tpeak
(%) |
cut on
50% T (µm) |
cut off
50% T (µm) |
Thickness
(mm) |
Status |
| J | 1.275 | 0.290 | 82 | 1.130 | 1.420 | - | in |
| H | 1.646 | 0.305 | 80 | 1.493 | 1.798 | - | in |
| Km =K' | 2.118 | 0.348 | 96 | 1.944 | 2.292 | - | in |
| Ks | 2.196 | 0.388 | 85 | 2.002 | 2.390 | - | in |
| K | 2.215 | 0.419 | 81 | 2.008 | 2.427 | - | in |
| H-short | 1.564 | 0.145 | 84 | 1.491 | 1.636 | - | in |
| H-long | 1.775 | 0.218 | 90 | 1.672 | 1.878 | - | in |
| BDS
short end K |
2.080 | 0.257 | 91 | 1.951 | 2.208 | 1 | in |
| BDL
long end K |
2.281 | 0.263 | 95 | 2.150 | 2.413 | 1 | N/A |
| NB1.644
FeII |
- | - | - | - | - | - | in |
| NB2.122
H2 1-0 S(1) |
2.125 | 0.0206
(0.97%) |
82 | - | - | - | in |
| NB2.144
K Cont. |
2.143 | 0.0227
(1.06%) |
85 | - | - | - | in |
| NB2.166
Bracket gamma |
2.170 | 0.0219
(1.01%) |
74 | 2.159 | 2.182 | 1.9 | in |
| NB2.248
H2 2-1 S(1) |
- | - | - | - | - | - | in |
| NB2.295
CO |
2.291 | 0.0215
(0.94%) |
65 | 2.281 | 2.302 | 1.9 | in |
A Schematic diagram [17 kB] of Omega-prime is also available.
| Peter Bizenberger | Dave Thompson |
| E-mail: Peter | E-mail: Dave |
| Phone: +49 (6221) 528-311 |
