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Dream
Astrograph - 16" - custom 5.5" minor axis elliptical
secondary |
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UPDATE: The 5.5" minor
axis secondaries have arrived, 4/20/06. Click the photo below. |
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Shown left is an (unfinished) custom made 5.5"
minor axis secondary for the 16" f3.75 Dream Astrograph. |
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The major axis is approximately 7.8". |
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This particular CNC substrate (unfinished optically)
is used for fitting and deflection testing. |
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Other units are currently with the optician and will
be shipped to Dream by April 18th, 2006. |
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Shown left are three 5.0" minor axis elliptical
sub components. These 0.167" thick, solid laminate carbon
fiber/epoxy disks will be used to support the 5.5" minor
axis secondary, shown in the background. |
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Each disk weighs approximately 94 grams. |
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Assembled
16" Dream Astrograph at NEAF |
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Shown right is the raw carbon fiber and stainless
steel secondary assembly (without the 5.5" minor axis secondary
mirror). |
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Everything "silver" in the image, including
the collimation hardware, is stainless steel. This photo is shown
prior to flat black painting of the stainless steel portions
of this assembly. |
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The carbon fiber portions will also receive flat black. |
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