M77781A
MS257
™ USB/RS232
MONOCHROMATOR AND SPECTROGRAPH
57
10 SPECIFICATIONS
Unless otherwise stated, all specifications have been determined using monochromator optics, a 1200
line per millimeter grating, a 10 um x 2 mm slit and light at 546 nm.
System
Design:
Asymmetrical Czerny-Turner
Configuration:
In line using turning mirrors, plus axial port
Ports:
1 input, 2 output
2 input with Auxiliary Input Port accessory
Usable wavelength range:
170 nm to 24 µm (grating dependent)
F number (input):
3.9
Input focal length:
220.0 mm
Exit focal length:
257.4 mm
Included Angle at grating:
23.66º
Mirror Design:
77781
Spherical
77782
Toroidal
Optical height:
5 inch (127 mm)
Stray Light:
0.03% at 250 nm (Deuterium source & glass filter)
0.0015% 633 nm (laser source)
Overall Dimensions:
19 x 12 x 7.25 in (48 x 30 x 18.5 cm)
Weight:
40 to 45 lbs (18 to 20.5 kg)
Power Requirements
90-264 Vac; 50/60 Hz
1.4A max @ 120 Vac, 0.7A max @ 240 Vac
Optical Field
Full field: 28 mm x 28 mm
Flat field (
77782
): 28 mm x 10 mm
Field tilt relative to mounting face:
77781
3.1º
77782
6.7º Field
tilt relative to optical plane:
<0.1º
Focal plane clearance:
30.0 mm
Wavelength
Reciprocal dispersion:
3.22 nm/mm
Wavelength resolution:
0.1 nm typical, <0.15 max.
Wavelength accuracy:
±0.1 nm, < 0.15 max.
Wavelength repeatability:
±0.015 nm typical, < 0.03 max.
Wavelength step size:
0.028 nm
Temperature stability:
±0.01 nm/ºC
Wavelength Drift:
±0.0001 nm/hr
Imaging
Image horizontal magnification (
77781 & 77782
):
1.1
Vertical magnification (
77782
)
1.6
Imaging spatial resolution (
77782)
:
< 350 µm* (using 200 µm fiber)
Image vertical stability:
±125 µm
Image horizontal stability:
±5 µm
* Oriel Instruments suggests input channel separation to be > 150 µm for practical systems.
