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gen
II,
16" f3.75 Dream Astrograph - completely unprocessed, raw
sample images all-sky, taken here at Dream during test out. |
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"Achieving superb performance is a goal, but achieving that
same high level of performance as the instrument moves around
AND as temperature changes, is the ultimate goal." lightweight precision optical mirror
Shane Santi - Dream
Founder & President |
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U n s u r p a s s e dAAQ u a l i t yAAI sAAN o tAAA nAAA c c i d e n t |
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The following links point to raw FITS files
that, other than dark subtraction, have not been altered in any
way. They are full frame images taken at 1x1 binning. These were
taken using a KAI-11002 CCD chip, 50mm square Luminance filter
and the gen II 4" coma corrector. All images are 20 seconds
and all were taken at the same focus setting. Focus and collimation were not
touched for any of the test images below. |
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The data shows the mechanical and thermal
stability of this telescope at varying telescope angles across
the sky. After taking an initial image at a new location on the
sky, approximately 4 minutes was allowed to pass, then a follow
up image from the same location was taken. We highly recommend
you download some or all of the images and open them in Photoshop
or similar. Enlarge to 300% and evaluate the star shapes for
yourself, especially in the corners. |
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LOCATION |
TIME (local time) |
IMAGE NUMBER/LINK |
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zenith |
11:51pm |
1287 |
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west, northwest |
12:02am |
1297 |
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12:05am |
1298 |
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south, southwest |
12:08am |
1299 |
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12:13am |
1300 |
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north, northwest |
12:16am |
1301 |
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12:20am |
1302 |
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north, northest (meridian flip) |
12:24am |
1303 |
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12:29am |
1304 |
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east, northeast |
12:31am |
1305 |
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12:35am |
1306 |
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southeast |
12:38am |
1307 |
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12:42am |
1308 |
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west (meridian flip again) |
12:45am |
1309 |
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12:49am |
1310 |
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The telescope was daytime collimated using the custom collimation tools
that Dream had developed exclusively for the Dream
Astrograph telescopes. When these tools
are used properly there is no need for non-intuitive, frustrating
CCD collimation. All Dream Astrographs are tested under the stars
all-sky prior to shipping them to our customers. |
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pricing, availability and
specifications subject to change without notice |
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Copyright
© 2003-2026 Dream All Rights Reserved. |
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Contact
Dream |
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