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Curved Vane Spiders for Retrofits and New Builds

Curved vane secondary spiders virtually eliminate the defraction spikes
common to Dobs and Newts with straight vane spiders. These premium
spiders are made primarily of aluminum for sturdy construction and light
weight. The unique center bolt, spring, and tensioning nut make collimation
easy while allowing a large adjustment range. Vanes 1/16" thick, 1.5" wide
on Professional series, 1" wide on Meduim and Large Sizes. Vanes 1/8" thick
and 1.5" wide on Observatory series. Flat black finish. With Secondary Holder.
(mirror not included)

The retrofit series of four vane spiders is designed to replace factory spiders
on production Dobs with no drilling necessary. Your factory secondary mirror
holder and mirror fits on the new curved vane spider. Please check the
diameter of your factory secondary holder center stalk and select the proper
retrofit below. Mirror and holder not included with retrofit spiders!

Collimation thumbscrews are available as an option to replace the allen
screws, select below.

A dew heater upgrade provides an insulated vane to route power to the
heater, and the secondary center hole is enlarged for heater placement.
Heater not included.

Be sure to select your scope tube diameter below!





Retrofits For 6" to 12" tubes: Large 4 Vane Spiders

$109.00 each - #DRL2 - Large 4 Vane Retrofit Curved Spider for 3/16" Secondary Holder Center Stalk

$109.00 each - #DRL3 - Large 4 Vane Retrofit Curved Spider for 1/4" Secondary Holder Center Stalk

$109.00 each - #DRL4 - Large 4 Vane Retrofit Curved Spider for 5/16" Secondary Holder Center Stalk

$109.00 each - #DRL5 - Large 4 Vane Retrofit Curved Spider for 3/8" Secondary Holder Center Stalk

Retrofits For 11" to 16" tubes: Professional 4 Vane Spiders

$144.00 each - #DRP2 - Professional 4 Vane Retrofit Curved Spider for 3/16" Secondary Holder Center Stalk

$144.00 each - #DRP3 - Professional 4 Vane Retrofit Curved Spider for 1/4" Secondary Holder Center Stalk

$144.00 each - #DRP4 - Professional 4 Vane Retrofit Curved Spider for 5/16" Secondary Holder Center Stalk

$144.00 each - #DRP5 - Professional 4 Vane Retrofit Curved Spider for 3/8" Secondary Holder Center Stalk

Retrofits For 14" to 24" tubes: Observatory Grade 4 Vane Spiders

$184.00 each - #DRO2 - Observatory 4 Vane Retrofit Curved Spider for 3/16" Secondary Holder Center Stalk

$184.00 each - #DRO3 - Observatory 4 Vane Retrofit Curved Spider for 1/4" Secondary Holder Center Stalk

$184.00 each - #DRO4 - Observatory 4 Vane Retrofit Curved Spider for 5/16" Secondary Holder Center Stalk

$184.00 each - #DRO5 - Observatory 4 Vane Retrofit Curved Spider for 3/8" Secondary Holder Center Stalk

For 6" to 14" tubes: Medium Series 3 Vane Spiders

$94.00 each - #DSM2 - Medium Curved Vane Spider for 1.25" or Larger Secondary Mirrors

$94.00 each - #DSM3 - Medium Curved Vane Spider for 1.5" or Larger Secondary Mirrors

$94.00 each - #DSM4 - Medium Curved Vane Spider for 2" or Larger Secondary Mirrors

$94.00 each - #DSM5 - Medium Curved Vane Spider for 2" or Larger Cassegrain Secondary Mirrors

For 8" to 14" tubes: Large Series 3 Vane Spiders

$109.00 each - #DSL3 - Large Curved Vane Spider for 1.4" or Larger Secondary Mirrors

$109.00 each - #DSL4 - Large Curved Vane Spider for 2" or Larger Secondary Mirrors

$109.00 each - #DSL5 - Large Curved Vane Spider for 2" or Larger Cassegrain Secondary Mirrors

For 10" to 18" tubes: Professional Series 3 Vane Spiders

$149.00 each - #DSP3 - Professional Curved Vane Spider for 1.4" or Larger Secondary Mirrors

$149.00 each - #DSP4 - Professional Curved Vane Spider for 2" or Larger Secondary Mirrors

$149.00 each - #DSP5 - Professional Curved Vane Spider for 2" or Larger Cassegrain Secondary Mirrors

For 14" to 24" tubes: Observatory Series 3 Vane Spiders

$189.00 each - #DSO3 - Observatory Curved Vane Spider for 1.75" or Larger Secondary Mirrors

$189.00 each - #DSO4 - Observatory Curved Vane Spider for 2" or Larger Secondary Mirrors

$189.00 each - #DSO5 - Observatory Curved Vane Spider for 2" or Larger Cassegrain Secondary Mirrors

For 10" to 18" tubes: Professional Series 4 Vane Spiders

$169.00 each - #DS43 - Professional Curved 4 Vane Spider for 1.4" or Larger Secondary Mirrors

$169.00 each - #DS44 - Professional Curved 4 Vane Spider for 2" or Larger Secondary Mirrors

Upgrades:

$5.00 each - #DSCS - Collimation Thumbscrew Upgrade, All Models - Available only with spider purchase

$25.00 each - #DSDH - Upgrade for Dew Heater Setup. Heater Not Included!

Select your scope tube inside diameter here:

6.0" Tube Inside Diameter

6.5" Tube Inside Diameter

7.0" Tube Inside Diameter

7.5" Tube Inside Diameter

8.0" Tube Inside Diameter

8.5" Tube Inside Diameter

9.0" Tube Inside Diameter

9.5" Tube Inside Diameter

10.0" Tube Inside Diameter

10.5" Tube Inside Diameter

11.0" Tube Inside Diameter

11.5" Tube Inside Diameter

12.0" Tube Inside Diameter

12.5" Tube Inside Diameter

13.0" Tube Inside Diameter

13.5" Tube Inside Diameter

14.0" Tube Inside Diameter

14.5" Tube Inside Diameter

15.0" Tube Inside Diameter

15.5" Tube Inside Diameter

16.0" Tube Inside Diameter

16.5" Tube Inside Diameter

17.0" Tube Inside Diameter

17.5" Tube Inside Diameter

18.0" Tube Inside Diameter

18.5" Tube Inside Diameter

Price includes shipping in the USA!

Ordering Information

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