 |
|
Home |
|
More about this productDetailed product descriptionDimensions and specificationsAvailable optionsDownload instructions (PDF)Secondary mounts FAQ |
Features:
Our 3-vane spider design has 1/4 less total diffraction compared to 4-vane models. Bright field objects will appear to have six diffraction spikes spaced at 60° intervals, but the spikes are half as bright compared to a 4-vane spider (see diffraction comparison). The 3-vane mountings feature the same simplified collimation as the 4-vane models, and are available for mirror sizes from 0.75” to 2.60” (minor axis size). Available in metric threaded versions. Made in the U.S.A. Read how to order secondary mounts... More detailed information about this product... |
|
|
Prices include both spider and mirror holder. The tube ID ranges shown in the table are for pricing purposes only, and the spiders are not adjustable over this wide range. We make your spider to fit your exact tube requirements. When ordering, please provide the actual tube (or cage) inside diameter. We will make your spider slightly smaller to permit proper vane tensioning. The dimensions in the table are in inches. |
Note: Spiders are custom-made for your inside diameter (ID), and are not adjustable over the ranges shown in the table below. When ordering, provide the information described on the ordering information page.
|
|
| 4-vane mounts | 3-vane mounts | curved mounts | Cassegrain mounts | telescope tubes | secondary mirrors | flocking |
ProtoStar P.O. Box 448 Worthington, Ohio 43085 U.S.A. toll-free orders 1-866-227-6240
|
Thin vanes for low diffraction.
