16" Dream Astrograph - featuring Dream's Filtered Air System

"This is a beautiful piece of work."

John Gross - Sonoita Research Observatory, Sonoita, AZ

The 16" f3.75 Dream Astrograph is shown (below) with one of the 20" dovetail plates (required accessory) attached. The dovetail plate allows fine control of balance in the dec axis. It was designed to mate with dec plates, like the 20" long VersaPlate of the Paramount ME.


Telescopes are shipped with the 4" Dream PDF focuser. This custom focuser was developed to allow accurate collimation of the focuser with a very wide footprint (7.2" diameter). The latest version Dream is using is 6x stiffer than its predessors. Like the back plate of this telescope, it uses 3/8-24 stainless steel push/pull bolts for extremely precise focuser alignment, set at Dream. It also allows the use of either the 3" coma corrector or 4" coma correctors.

The carbon fiber focuser platform reduces the moment arm of the imaging train and it greatly stiffens the focuser area compared to tall, heavy focusers used in combination with solid laminate carbon fiber tubes. 

The bolt pattern for the back plate is asymmetrical. This forces the back plate and therefore the primary mirror to go back on the telescope in the same orientation, thus helping to better preserve the collimation of the primary mirror.


The set of three 3" collimation tools is shown.

The 3" sight tube is installed in the focuser.
 

The 3" Cheshire (all black) and the 3" AutoCollimator (black top flange with silver body) can be seen sitting on the 20" Dream dovetail plate.

 

The 16" f3.75 Dream Astrograph uses 3/8-24 stainless steel collimation bolts in a push/pull arrangment. They are at a wider than normal location. The combination of 24tpi and wider location allow very fine control of the primary mirror's tip/tilt. 
 


16"

20"

24"

32"


pricing, availability and specifications subject to change without notice