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"This
is a beautiful piece of work." |
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John Gross - Sonoita Research
Observatory, Sonoita, AZ |
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The 16"
f3.75 Dream Astrograph is shown 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. |
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The two cables on the left are the temperature probes
discussed on the previous page. The red cable coming out of the
second pass through port on the right is the 12v power for the
fans. |
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New telescope orders 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). Like the back plate of this
telescope, it uses 3/8-24 stainless steel push/pull bolts for
extremely precise focuser alignment. It also allows the use of
either the 3" coma corrector or 4" coma correctors. |
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The carbon fiber focuser platform reduces the moment
arm of the imaging train and it greatly stiffens the focuser
area. |
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The bolt pattern for the back
plate is asymmetrical. The two top bolts are closer together
than the two bottom bolts. 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. |
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