21 millimeters

Coronado Telescope Accessories 15mm Blocking Filter Model: BF15. Coronado 15mm Blocking Filter BF15  more

Coronado Solarmax II 60mm Double Stacking Etalon Filter With Richview Tuning Tmax Tuner. Coronado SolarMax II 60mm Double Stacking Etalon filter with RichView ...  more

[Pre Order - allow extra time] Coronado SolarMax II 60mm Solar Filter Set SolarMax II 60mm Solar Filter Set, BF-10 90° Blocking Filter, Compatible w/ 1000mm ...  more

[Pre Order - allow extra time] Coronado SolarMax II 60mm Solar Filter Set SolarMax II 60mm Solar Filter Set, BF-30 Straight Blocking Filter, Compatable w/ 3000mm ...  more

Coronado PST - Personal Solar Telescope with CaseThe PST is the latest innovation from Coronado. This little" telescope is another step toward our goal of ...  more

Celestron Accessory Kit  more

The 1.25" eyepiece and filter accessory kit contains: Five Superior grade 1.25" Plossl eyepieces: 4-element design with a 52-degree Apparent Field of View ...  more

Coronado PST - Personal Solar Telescope with CaseThe PST is the latest innovation from Coronado. This little" telescope is another step toward our goal of ...  more

This light balancing filter is used to make minor corrections in color temperature. By reducing unnatural red tones in early morning or late afternoon light this ...  more

The items in this kit are valued at over $700.00 if purchased separately! Regular retail price of this kit is $399.00 The Accessory Kit Contains Five Superior Grade ...  more

Coronado Telescope Accessories 30mm Blocking Filter Model: BF30. Coronado 30mm Blocking Filter BF30  more

[Pre Order - allow extra time] Coronado BF-10 Blocking Filter BF-10 Blocking Filter , 1.25" 90&deg Diagonal, For Telescopes ?1000mm, Needs a SolarMax Solar ...  more

[Pre Order - allow extra time] Coronado Blocking Filter BF-30 Blocking Filter BF-30 , 30mm, 2.0" Straight-Through Design, 1.25" Zero-Length Reducer ...  more

[Pre Order - allow extra time] Coronado SolarMax II 40mm Double Stacking Filter SolarMax II 40mm Double Stacking Filter, Double Stacks a SolarMax II 40, RichView ...  more

[Pre Order - allow extra time] Coronado SolarMax II 60mm Double Stacking Filter SolarMax II 60mm Double Stacking Filter, Double Stacks a SolarMax II 60, RichView ...  more

[Pre Order - allow extra time] Coronado SolarMax II 40 mm Solar Filter Set SolarMax II 40 mm Solar Filter Set, BF-5 90° Blocking Filter, Compatible w/ 500mm ...  more