Custom 4" Coma Correctors for the Dream Astrograph line and other select customers.


The photo to the left shows ten custom 4" coma correctors next to the new 4" Off-Axis Guider. This combination allows guiding prior to the filters.

Spot diagrams for this corrector can be seen by clicking below.


Dream is blackening the edges of each lens element inside the new Custom 4" Coma Corrector for maxiumum contrast, as well as using a Teflon gasket under the metal retaining ring. 


The photo to the right shows the 4" Off-Axis-Guider attached to the custom 4" coma corrector.

 

Click on the small image below to see the matrix spot diagram, which shows chromatic performance of this corrector.


 

 
 


pricing, availability and specifications subject to change without notice