Microscopes and Video
Microscopes
Each beamline is equipped with two Leica microscopes to aid in crystal
selection and mounting. Using a COHU camera series 2222-1340/0000 (COHU Inc. Electronics Division (858) 277-6700)
or Sony camera, one of these microscopes is setup to display images on a nearby computer monitor
and in the
beamline video system.
Directions for remote viewing:
- Focus the microscope looking through the eye pieces as usual.
- Turn on the attached video monitor or connect to the beamline video
system through a web browser.
- Flip the switch on the side of the microscope from 'vis' to 'photo'. You may lose vision through one of the eye pieces.
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Microscope Vendors:
The microscope is available through Lieca.
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- Leica Inc.
111 Deer Lake Road
Deerfield, IL 60015
Phone: (800)248-0665, Fax: (847) 317-7268
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The microscope is composed of the following parts:
Description (range 6.3-40X) |
Part Number |
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M76
Optics (0.63X-4.0X Zoom)
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Video
Phototube HV for 50%/50% View
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0.5X
C-Mount Adapter
- 10X
C-Mount Adapter
- 45
Degree Inclined Binocular Head
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10x Wide
Field Eyepiece
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Reticule, 120 division w/ Crosshair
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1.0X Achromatic Objective
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Transmitted Light Base 20W
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Coarse Focus Mechanism. 300 mm
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MZ
Microscope Carrier
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Polarizer on Stage Plate, 120 mm diam.
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Analyzer. Rotatable. 58mm
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Dust
Cover
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10445614
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10446194
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D50MZC
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D10DMC
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10445619
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10445111
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10376119
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10411589
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10445387
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10445615
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10445617
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10446228
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10315306
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10362677
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Items needed for
increased zoom (12.8-160X): |
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2 ea
Eyepiece 16X/14B adjustable
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Coarse/fine focus
drive
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Analyzer 66mm
diameter
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Objective Planapo
10x,M-series
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ErgoWodge 5-25
degree
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- 10445301
- 10447106
- 10367929
- 10446230
- 10446123
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Crystal viewing in the Experimental Hutch
The sample crystal is viewed via a CCD camera and displayed in the hutch and the electronics rack with a
Samsung 170 mp / 17" flat panel monitor. The Optronics Model LE-470 Color CCD remote head camera with 6' composite and S-Video cables,
and power supply is available through Leica Inc. The sample camera uses a zoom
lens enabling the experimenter to zoom in and out while centering the crystal in
the x-ray beam. The zoom lens system is available through J.H.
Technologies in San Jose CA (408 - 436-6336). It consists of the following
components:
Navitar 12x lens with motorized zoom and manual focus, DC servo motors with encoders and optical limit switch Part# 1-50486MEL
Navitar 2X Standard NIRA Adapter Part# 1-60185
Navitar NIRA Elbow Adapter Part# 1-60165
Navitar C-Mount Coupler Part# 1-16010
Navitar 0.75X Lens Attachment, 107 mm WD Part# 1-50013
We made some modifications to this system which include a custom made limit
switch bracket holding cherry DH-series ultra-micro limit swiches (available
from DigiKey). To actuate these swiches we modified the SPUR gear that
comes with the lens and installed a 2 mm dowel pin. The system also includes a
custom mounting bracket that connects the lens to the XY-stage and a custom
mounting plate for attaching the XY-stage to the experimental table. A
lens-cover to was also added to protect the lens from LN2. The lens cover
includes a FisherBrand Preimum Cover Slip (25mm x 25mm, No. 1 12-548C from
fisher Scientific 800-766-7000). The
direct beam position is marked on the monitors using a video line generator
which was purchased from World Video, Inc. (www.microimagevideo.com).
The video signal is also entered into an axis 2400+ video server (http://www.axis.com)
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