NP 250-2 Two-Cannel Spectrograph
 The NP
250-2 uses a modified Hill optic schematic with two pairs of off-axis parabolic mirrors to
form two independent channels. The Spectrograph is completely automated and PC-controlled.
Features
Internal controller connection to any computer via RS 232 or IEEE-488
Total computer control of all functions
Continuously automatically or manually variable slits
Diode arrays attachable
Aspheric collimating and focusing mirrors
Simultaneous detection of two independent spectra using a single CCD-type detector
Specifications
| Focal Length (mm) |
250 |
| Aperture Ratio |
Input |
f/3.7 |
| Exit |
f/5.5 |
| Wavelength Range (nm) |
200 to 1100 |
| Focal Plane (nm) |
Primary |
17.5x8 |
| Usable |
25.0x8 |
| Grating (G/mm)* |
1200 |
300 |
| Dispersion (average) (nm/mm) |
2.85 |
13.3 |
Spectral width of interval to be detected for
17,5 mm focal plane (nm) |
50 |
230 |
| Grating adjustment step, min (nm) |
0.01 |
0.04 |
| Entrance/Exit slit |
Motor(micrometer) driven slit assembly |
|
Width (mm) |
0 to 2.0 |
|
Reading accuracy
(mm) |
0.002 |
|
Height (mm) |
1,2,3,4 |
| * Other gratings available |
|
|
