Index of Information on Tubes and Adapters

Telescope Backplate Aperture Sizes

Vignetting by Tubing Near the Focal Plane

Adapters for Imagers and Camera Lenses

Field Rotation and De-Rotators

Video Camera and Attachments

Piggyback Mounts for Cameras

Focusing Devices for Film CamerasWith Removable Pentaprisms

Using the ETX as a Guider Telescope

Information on the Lumicon Giant Off AxisGuider

Use of the Optec Filter Slider with the JMI-NGFS

Photographs and Design of a Weighted2" to 1 1/4" Eyepiece Adapter

Discussion of 2" Diagonals: Meadeand TeleVue Compared

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