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16"
Dream Astrograph - filtered
tube offering, sample images here at Dream. |
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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 files
were taken using a KAI-11002 CCD chip, 50mm square Luminance
filter and Dream's custom 4" coma corrector. All images
are 20s and all were taken at the same focus setting. The data shows the rigidity
and optical performance of this telescope at varying telescope
angles. After taking an initial image at a new telescope angle,
approximately 4 minutes was allowed to pass before taking a follow
up image from the same location. 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, especially in the
corners, for yourself. |
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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 3" 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 in Dream's observatory prior to shipping
them to our select customers. |
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