16" Dream Astrograph - Filtered Air System Technology (FAST)

The foremost priority of a forced air system is to help the entire instrument reach and follow ambient temperatures more closely.

The benefits of Dream's unique Filtered Air System Technology (FAST) are numerous. It allows a much greater volume of air than other designs. This is due to the enormous surface area of the high-performance K&N filters used and because of the specific high-volume, low-vibration fans used. The large surface area of the filter media causes far less static pressure than placing small blocks of filter media directly on a fan. The higher the static pressure, the greater the loss to the air volume moved.

For the 16" Dream Astrographs the air volume inside the tube is exchanged 5-6 times per minute.

Why does Dream put so much effort into equalization?

Dream's use of FAST provides numerous additional benefits that no other systems offer. We are filling the telescope chamber with filtered clean air. This helps keep the optics cleaner for a much longer length of time. For remote imagers/science, we advise our clients to leave the fans on all the time, even during the day. These fans are very light and efficient, using less than 10 watts altogether. Leaving them on has additional thermal benefits but it also eliminates the need for automated front aperture covers for the instrument.

Moving air does not allow dew formation. Moisture is the leading cause of dust and other air borne materials adhering to surfaces. FAST keeps the optics prestinely clean, the thermal benefits are enormous and insects, especially spiders, do not enter the tube. 

Dream is the only company in the world utilizing FAST. Dream is also the only company in the world offering a standard optical instrument that utilizes engineered lightweight mirror blanks for both the primary and secondary mirrors. This combination produces unrivaled speed in equalization of the optics.

Click the image to the left to see more photographs of the 16" f3.75 Dream Astrograph.

Click on the image to the right to see the telescope on a Software Bisque Paramount ME.





pricing, availability and specifications subject to change without notice