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Rainbow Symphony is an authorized Distributor for Thousand Oaks Optical

 

Glass (Full Aperture) Type 2

 Aperture, Mounted:     Aperture, Unmounted: 
 Retail
 Retail
 2.4"
  59.00
  2.4"
  49.00
 3.1"
  59.00
  3.1"
  49.00
 3.5 - 4"
  69.00
  3.5 - 4"
  59.00
 4.25 - 5"
  79.00
  4.25 - 5"
  69.00
 6"
  89.00
  6"
  79.00
 8"
  99.00
  8"
  89.00
 10"
119.00
  10"
  109.00
 11"
129.00
  11"
119.00
 12 - 13.1"
149.00
  12 - 13.1"
139.00
 14"
169.00
  14"
159.00
 40mm to 80mm Binoculars-Mounted        
  99.00


Glass (Full Aperture) Type 2+ or 3+

 Aperture, Mounted:     Aperture, Unmounted: 
 Retail
 Retail
 2.4"
  69.00
  2.4"
  59.00
 3.1"
  69.00
  3.1"
  59.00
 3.5 - 4"
  79.00
  3.5 - 4"
  69.00
 4.25 - 5"
  99.00
  4.25 - 5"
  89.00
 6"
109.00
  6"
  99.00
 8"
129.00
  8"
119.00
 10"
149.00
  10"
139.00
 11"
159.00
  11"
149.00
 12 - 13.1"
179.00
  12 - 13.1"
169.00
 14"
199.00
  14"
189.00
 40mm to 80mm Binoculars-Mounted        
129.00


NEBULAR FILTERS
RETAIL

LP-1 (Broadband)  1.25" 89.00
LP-1 (Broadband)  2.00" 149.00
LP-2 (Narrowband)   1.25" 89.00
LP-2 (Narrowband)   2.00" 179.00
LP-3 (Oxygen III)  1.25" 89.00
LP-3 (Oxygen III)  2.00" 179.00
LP-4 (H-Beta)   1.25" 89.00
LP-4 (H-Beta)  2.00" 179.00

      


H-ALPHA PROMINENCE FILTERS

Prominence filters include an ERF (Energy Rejection Filter) sized for each brand and aperture of telescope. Refractors require a center axis ERF. All other telescopes require an off-axis ERF.

 Telescope Aperture
 Complete System
 
Mounted ERF Only
 Off-Axis  Center Axis
 Center or Off-Axis
 2.4"- 3.1" .........  729.00  1.25"  129.00
 3.5"- 4" 729.00  749.00  1.50"  159.00
 4.5" - 5" 749.00  769.00  2"  189.00
 6" 769.00  789.00  2.5"  219.00
 7"- 8" 789.00  839.00  3"  249.00
 9"- 10" 839.00  869.00  3.5"  279.00
 11"- 12.5" 869.00   899.00  4"  309.00
 14" 899.00  .........  4.5"  339.00
 16" 949.00  .........  5"  369.00

H-Alpha System and ERF prices are retail.

 

All of our Solar filters and Nebular filters are manufactured in the U.S.A. by Thousand Oaks Optical.