DAVIDSON OPTRONICS Model D-602 Manual Autocollimator

MANUAL AUTOCOLLIMATOR -- D-602

With no moving parts, the Model D-602 Manual Autocollimator is one of the easiest autocollimators to use for aligning a mirror normal to the line of sight within one arc second. The entire 20-inch folded path optical system is built into a light compact package.

Features:

Low cost
Rugged construction

No moving parts, so no wear

Compact folded design makes alignment easy

Easiest to use for rapid mirror alignment in two orthogonal planes

Two axis capability

20 arc minute measuring range

Dark field projected reticle reduces eye fatigue

Accurate to 1.0 arc second

Certification of accuracy traceable to National Institute of Standards and Technology

The circular rings of the reticle shown above indicate alignment errors within the 20-arc minute range. In the example shown, the misalignment is 3'10" Azimuth, 2'15" Elevation. The reticle has four 15-arc second center rings and ten outer one-arc minute displacement rings numbered 1', 5', and 10' to simplify simultaneous readings in two orthogonal axes.
The Model D-602 Manual Autocollimator is often used as a collimator or alignment target for a telescope or theodolite. It can also be used to determine rate table angular settings, potentiometer linearity, tool alignment, or for aperture sharing. Three-point support, with an adjustable rear foot for elevation, simplifies initial alignment.
For theory of operation, please refer to the Principles of Autocollimation Application Note.

Detailed Specifications:

Nulling Sensitivity		1 arc second
Accuracy		1 arc second
Field Range		20 arc minutes
Aperture Diameter		2-3/8"
Eyepiece Magnification		12X (24X available)
Focal Length		20", folded
Eyepiece Reticle		Opaque Crosshair
Projected Reticle		Dark field, bright concentric rings
Light Source		GE #328 lamp (2 spares included)
115V Power Supply		Model D-416 Power Pack, variable from 0 though 6 volts DC
Housing Material		Aluminum
Overall Dimensions	Height	10"
	Width	4"
	Length	9½"
Finish		Ivory Enamel
Carrying Case		Finished Hardwood, Ethafoam fitted for instrument and light source
Instrument Weight		9 pounds
Shipping Weight		20 pounds

The Model D-602-101-004 uses the U.S. Air Force 1951 Resolution Pattern for the projected reticle.

Optional Accessories:

Model D-165 High Intensity Light Source. This option may be required when autocollimating off of low reflectivity surfaces or small mirrors.
Model D-247 Table Instrument Stand
Model D-416B 220V 50Hz Power Supply
P/N 105-2761-602 Video Camera & Monitor with integral camera power supply. With this option readings become very easy even for unskilled personnel. Repeat readings are more accurate and faster. The camera eliminates any errors from parallax and greatly reduces eye fatigue. This option is easily added to existing Model D-602's.

Davidson Optronics, Inc.
Phone: (626) 962-5181
Fax: (626) 962-5188
E-mail: sales@davidsonoptronics.com