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MOON and PLANETS
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LEONID METEOR. This super photo of a
bright meteor entering Earth's atmosphere was taken by North Houston
Astronomy Club member, Dick Locke at the height of the 2001 storm. The
photo was subsequently used as part of the closing sequence in a Science
Fiction Movie.
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This shot of the bright comet, Ikeya-Zhang,
low in the western sky was taken Friday March 15th, 2002 through our 4 inch
Takahashi FSQ refractor. It is a composite of 9 minutes luminance and
3 minutes for each color. You can clearly see the fan shaped nature of
the tail, which extends much further than the frame size of our camera.
You can also see how the tail bends slightly to the left.
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COMET C2001WM1_LINEAR, imaged on 17th
June, 2002 using our C-14 and the ST7-E camera. That evening the comet
was located very close in the sky to globular cluster Messier 13.
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JUPITER - Largest planet in the solar
system, Jupiter rotates very rapidly on it's axis, so fast that the
atmosphere is dragged into the brown and white bands and streaks which you
can see in this image. This image was prepared by taking 20 x
0.01second 3x3 binned images in each color, selecting six of the best of
each color and then combining all the images in MaxIm. A high pass
filter was applied and the red spot is visible, although Jupiter's
rapid rotation has blurred it slightly.
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The Moon - Taken from our Spanish
observatory in October 2007. The moon is approximately 5 days old in
this photo, taken with the Canon EOS 10D camera and a 300mm telephoto
lens. The camera was hand-held.
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The Moon - taken on 11th August, 2001 at
Terlingua Ranch, west Texas using our Takahashi FSQ-106 telescope at
f/5. The last quarter moon was just rising over the mountains and had
clearly decided to spoil our night of imaging - so we decided to take a
picture of it. A blue filter was used to reduce the amount of light,
and the exposure is one frame at 0.01 seconds
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A couple of labeled images of the moon,
taken with the C-14 telescope at f/7 from Terlingua Ranch west Texas in June
2003. This shot is of the rugged and heavily cratered south polar
area. Both this and the next image were taken with the ST-8XE CCD
camera through a blue filter and were 0.01 seconds in duration
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This image is centered around the craters
Copernicus and Kepler. The moon was about 6 days away from new and had
just risen over the mountains which surround our observing area at the ranch
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Another shot of Copernicus, which is 11,483 feet deep,
from the top of the crater walls to the floor. You can see the double
mountain in the center. This image was taken in March 2001 at f-11 with our C-14 and is a
single exposure of 0.01 seconds through a blue filter. A small amount of
sharpening was used.
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It really is amazing how battered the moon
is. When you consider that our Earth must have suffered a similar
bombardment, and the only difference is that the oceans and atmosphere of
our planet have eroded most signs of it away. In this shot of a different
part of the moon you can see how the once liquid "sea" has
hardened into ridges on the flat surface.
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Before
you can begin any night of astronomy you need to be sure that the moon is
not anywhere around! But sometimes we can have fun with the moon,
especially when it is small, when the reflected "Earthshine"
back into space lights up the dark part. My father used to tell me
that this was "the old moon in new moon's arms". This is a
very slim, 2% illuminated moon, captured at 0.01 second exposure through a
blue filter
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And
then, when the rotation of the Earth carries our satellite down towards
the horizon, in a nice, dark sky you get a very pretty moonset.
Here, the 2% moon is sliding gracefully behind the mountains on the
horizon, leaving a piece sticking up in the air like a lamp standard on a
used car lot in downtown Houston! Well, hardly - but you know what I
mean
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And
then, having rushed and scurried around the night before to get the
pictures, because we were kind of "caught out" by the sudden
appearance of the moon, we were able to get a better shot of the moonset,
with the pine trees on the mountain top illuminated by the light of the
setting moon. Who said astronomy wasn't romantic!!
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In this, the first picture of the moon we
ever took with our Canon EOS 10D camera, you can see
the 5 days old moon, taken at the full 300mm zoom of our Tamron
telephoto lens.
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This picture, the new moon and bright
Venus was taken at our Spanish observatory on the evening of 19th April,
2007. You can just see the Pleiades (Messier 45) to the lower left of
the moon and some stars of Taurus to the far left. The lighted part of
the moon is over-exposed to reveal the "Earthshine" - the
illumination of the dark part of the moon by reflected Earthlight. There
is a larger image (0.8Mb) here
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The moon and Venus, taken in Spain on 18th
June, 2007. Earlier this day Venus had been occulted by the Moon, but
the event was not visible from Spain, only further north.
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In this picture with the Canon EOS 10D the
moon is almost full, but you can still see craters on the limb. This
image was taken by holding the camera close to our 35mm Teleview Panoptic
eyepiece on the 16 inch scope. Attempts to use the camera directly
connected to the scope were thwarted because we couldn't get the focuser to
rack far enough in to achieve focus.
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The "Rupes Recta", a 110 Km long
escarpment on the moon. Taken by NHAC member Mark Skulborstad through his LX200, this is a shot of the dark
shadow cast by this 300 meter high escarpment as the sun rises on that part of
the moon. The small craters to
the right of the wall are Birt and Birt A, with Birt being the larger
crater. The triple crater to the left, from big to small is: Thebit,
A, B and C at 57km, 20km and 10km in diameter. The larger crater to
the upper left is Arzachel at 97km
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Saturn - A nice look at the ringed planet, showing cloud structure on the planet and the Cassini division in the ring system
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SATURN - Another attempt at a quality
color image of the ringed planet. This image was composed by taking twenty
images of 0.01 seconds each for each color and then screening the
candidates. The best image from each set was then digitally developed in
MaxIm using an FFT low pass filter and the three resulting images were
combined. A high pass filter completed the processing.
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Saturn and Titan - A color image of the
ringed planet, showing its major satellite, Titan. This image was
taken in west Texas on 28th December, 2000 and is an RGB composite of
0.01second images. Twenty images for each color were taken, and the
very best of each selected for digital processing and subsequent combining
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VENUS - often known as "Earth's
Twin" because it is so close to us and so similar in size, Venus is in
fact impossibly different from our planet. It is always completely
covered by thick, dense clouds of corrosive acidic gases and the surface is
extremely hot - hot enough to melt lead. In the sky Venus is a
brilliant star in either the western or eastern sky, but in a telescope it
is just a fuzzy white ball. In this image you can see the half phase which
Venus showed in December 2000.
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VENUS again, this time taken on March
2001, Venus was descending towards a point between Earth and the sun and the
illuminated portion was rapidly decreasing. In this image only 18% of
the planet is illuminated. The image was so bright that it had to be taken
through both an O3 filter and a blue filter to reduce the light intensity.
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Mars as it neared opposition in August
2003. This image was taken by North Houston Astronomy Club member
Terry Angelich using a Webcam and a 14 inch reflecting telescope.
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