QM 100
Long-Distance
Microscope
(#30003)
The QM 100 combines the compactness and ease of use of the QM 1 with the relative aperture and
resolution of the larger microscopes. For applications requiring high magnification and resolution, and
which allow the user to work from distances of 15 cm. to 35 cm., the QM 100 is uncontested in
performance and flexibility.
Specifications
Type:
Working Range:
Numerical Aperture:
Resolution:
Magnification:
Format:
Maksutov Cassegrain Catadioptric
15 cm (6 inches) to 35 cm (14 inches), subject plane to front element.
Working Distance
N.A.
f/no
33.5 cm (14 inches)
.083
6.0
25.4 cm (10 inches)
.115
4.3
15 cm ( 6 inches)
.142
3.5
1.1 microns at 15 cm (6 inches).
To 34 times at image plane.
Diffraction Limited Field 12 mm.
Optics
Corrector Lens:
Primary Mirror:
Secondary Mirror:
Baffling:
BK7, Magnesium Fluoride Coated, 63 mm (2.5 inch) diameter.
Pyrex, Aluminum Coated, SiO overcoated 104 mm (4.1 inch) diameter.
R1 Surface of Corrector, Aluminum Coated, 16 mm (.63 inch) diameter.
Helical in central tube, all interior surfaces anti-reflection coated.
Mechanical
Barrel:
Rear Closure Plate:
Focusing Mechanism:
Control Box:
Knobs:
Mount:
Aluminum, machined from seamless stock, threaded lens cell black anodized.
Length 32 cm (12.6 inches), outside diameter 11.4 cm (4.5 inches), weight 2.27 kg (5 lbs).
Aluminum with stainless steel main tube holder plate, adjustable centering.
Mirror thimble integral with stainless steel sliding tube. Slides on fixed, stainless steel light
baffle tube (centerless ground). Conical s.s. spring loaded Focus rod s.s. 303, precision
ground, 24 TPI; integrated inside control box.
Machined aluminum, selectable axial or 90û port. Internal beamsplitter standard flickknob
controlled.
Aluminum, 24S-T4, corrosion resistant, stainless steel shafts and levers.
Full barrel length, 1/4" - 20 and 3/8" -16 mounting holes.
* Specifications subject to change without notice.
12
A – TRIPOD MOUNT
B – CONTROL BOX
C – FOCUS KNOB & BUSHING
D – AXIAL PHOTOGRAPHIC PORT
E – BEAM SPLITTER ACTUATION KNOB
F – DIOPTER ADAPTER AND EYEPIECE (REMOVE
TO INSTALL TARGET LIGHT)
G – PRIMARY MIRROR AND FOCUS ASSEMBLY
H – MAIN TUBE AND BAFFLE ASSEMBLY
I – CORRECTOR AND LENS CELL
QM100 Field of View (2/3" CCD)
2.5
2.29
2.07
2
.9X
fIELD OF vIEW (mm)
OPEN
1.5
1.41
1.29
1.5X
1.17
1.04
1
2.0X
0.77
0.72
0.59
3.0X
0.5
0.41
0
15 CM
35.5 CM
WORKING DISTANCE (cm)
______________________________________________________________________________________________________
Questar Corporation
Telephone
215-862-5277 or 800-247-9607
6204 Ingham Road
Fax
215-862-0512
New Hope, PA 18938
Email
Questar@QuestarCorporation
USA
Web
www.QuestarCorporation.com
13
F-number and Depth of Field Data
for the QM 100 Barrel Configuration
in the OPEN Position
Working Distance
Numerical Aperture
F-number
Depth of Field
6’’
7’’
8’’
9’’
10’’
11’’
12’’
13’’
14’’
0,139
0,129
0,126
0,117
0,115
0,107
0,098
0,091
0,084
22,1
21,9
21,1
20,6
19,5
19,4
19,8
20,1
20,4
28 µm
32 µm
34 µm
39 µm
41 µm
47 µm
56 µm
65 µm
77 µm
The formula used for depth of field calculations is based on the Raleigh criterion. It is as follows:
(0,5)(λ)(NA)² where λ=0,546 µm.
Perceived depths of field will vary with the user, camera and wavelength. In general, they will increase when a
camera is used.
F-number and Depth of Field Data
for the QM 1 Barrel Configuration
in the OPEN Position
Working Distance
Numerical Aperture
F-number
Depth of Field
22’’
26’’
30’’
34’’
38’’
42’’
46’’
50’’
54’’
58’’
62’’
66’’
0,061
0,054
0,048
0,044
0,040
0,037
0,034
0,032
0,030
0,028
0,026
0,025
20,1
19,6
19,1
18,8
18,4
18,2
18,0
17,8
17,7
17,6
17,5
17,3
146 µm
187 µm
236 µm
282 µm
341 µm
398 µm
472 µm
533 µm
606 µm
696 µm
807 µm
873 µm
The formula used for depth of field calculations is based on the Raleigh criterion. It is as follows:
(0,5)(λ)(NA)² where λ=0,546 µm.
Perceived depths of field will vary with the user, camera and wavelength. In general, they will increase when a
camera is used.
18
0
15
0,5888
0,5
0,3968
0,7744
1,1712
1
1,2928
1,5
2
2,5
FOV (mm)
19
Working Distance (cm)
3,0 X
2,0 X
1,5 X
0,9 X
(2/3’’ format camera)
Field of View with Auxiliary Lenses
Questar QM 100
35,5
0,7168
1,0432
1,4144
2,0672
2,2976
Microscopes Field of View
(CCD Camera)
Data for horizontal FOV based on 2/3’’ Sensor (8,8 mm image plane)
9
QM-100
QM-1
8
7
F
i
e
l
d
6
5
o
f
4
V
i
e
w
3
(mm)
2
1
0
15
20
25
30
35
55
81
106
132
157
Working Distance (cm)
2 X Barlow Lens
1,5 X Barlow Lens
No Auxiliary Lens
172 mm pos. Lens
21
22
8,13 X
6,15 X
5,65 X
5,21 X
4,81 X
4,47 X
4,17 X
3,90 X
3,65 X
3,43 X
4’’
6’’
7’’
8’’
9’’
10’’
11’’
12’’
13’’
14’’
48,2
51,3
54,9
58,5
63,0
67,5
73,4
79,7
86,4
114,3
0,9 X
53,5
57,0
61,0
65,0
70,0
75,0
81,5
88,5
96,0
127,0
OPEN
80,3
85,5
91,5
97,5
105,0
112,5
122,3
132,8
144,0
190,5
1,5 X
107,0
114,0
122,0
130,0
140,0
150,0
163,0
177,0
192,0
254,0
2,0 X
Auxiliary Lens to 16 mm Eyepiece
160,5
171,0
183,0
195,0
210,0
225,0
244,5
265,5
288,0
381,0
3,0 X
110,9
118,0
126,1
134,8
144,5
155,5
168,4
182,7
198,8
262,8
OPEN
With 2/3’’ Format
Camera & 14’’ Monitor
The 4’’ working distance utilizes the Power Pack 100 aplanat attachment.
The above magnifications other than the “OPEN” column are extrapolated data.
When comparing video and eyepiece magnifications, use the “OPEN” column. Much of the difference here occurs in the artificial magnification
from the CCD to the monitor. This sometimes results in “empty” or “useless” magnification. We recommend that overall resolution and field of
view be compared for exacting calculations.
Although eyepiece magnifications are significantly less than CCD magnifications, comparable resolution is achievable due to the resolution
limitations of CCD technology and the exceptional physiology of the human eye.
1’’ = 25,4 mm
QM 100
Objective
Working
Distance
Magnification Chart for the QM 100
Barrel Configuration