DFM Engineering, Inc.
1035 Delaware Ave. Unit D
Longmont, CO 80501
Phone: 303-678-8143
Fax: 303-772-9411

Articulated Relay Eyepiece™


The Americans With Disabilities Act (ADA) requires access to public facilities for the handicapped. Up to now, getting a wheelchair bound person to the eyepiece of a telescope was very difficult and expensive.

DFM Engineering, Inc. announces the availability of an Articulated Relay Eyepiece™ (ARE-125™) that allows handicapped access to the eyepiece for most telescopes.

The Articulated Relay Eyepiece™ uses a series of relay lenses and folding mirrors to reposition the telescope focal plane a considerable distance from the tail piece of the telescope. Mechanical and optical swivel joints allow the ARE-125™ to pivot freely in 3 axes.

A person seated in a wheel chair may simply pick up the eyepiece and bring it to their eye for convenient viewing regardless of telescope position.

The ARE-125™ attaches to the telescope using a standard 2-inch eyepiece adapter. A standard 1.25-inch eyepiece may be inserted into the eyepiece assembly.

The light loss is minimized by using high reflectance coatings on the folding mirrors and broad band anti-reflection coatings on the relay lenses. The telescope resolution suffers only minimal degradation.

The ARE-125™ accepts an F/8 or slower beam from the telescope. For more information about the ARE-125™ contact our staff at DFM Engineering, Inc.


Americans With Disabilities Act

ARE-125™ Announcement

College of Southern Idaho ARE-125™ example

Clay Center ARE-125™ example

Filter Wheel


Smart Auto Guider™(SAG™)


X-Y Guider

Slide Mirror (SM-125™)