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UGC12343 a real-color image of this spiral galaxy, taken
as part of a large survey in the near-ultraviolet of local galaxies so as to
provide a reference sample for faint blue galaxies observed with HST. Image by
Windhorst, de Jong, Ponder, Burg, and Boyle. This image was presented in
November 1996 to Pope John Paul II at a meeting of the Pontifical Academy of
Sciences on the formation of galaxies. The latin inscription translates as 'the
beauty of nature (seen) in ultraviolet light'.
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The following several images were observed with the VATT in October 2001
by Matt Nelson, Chris Corbally, Aileen O'Donoghue, and docents from Discovery
Park, Safford, Arizona. The seeing conditions were 0.8 arcseconds and the field
was about 6 arcseconds square. Nelson processed these near real-color images
from 3-color data.
Dumbell Nebula Like other planetary nebula, M27 is a
bubble of gas that has been ejected by a star at the end of its life. The core
of the star still remains in the center and makes this bubble of gas glow. M27
is estimated to be 3,500 years old and perhaps 1,000 light years away.
NGC 6781 This is another planetary nebula, the ejected
gas bubble from a star. That central star is more easily seen than in the
Dumbell Nebula. It is the slightly bluish star right in the middle of the
bubble. This nebula sits in the part of the Milky Way that goes through Aquila,
a summer time constellation for the northern hemisphere.
Ring
Nebula This planetary nebula, also known as M57, is probably the
best known. Hubble Space Telescope images indicate that we are looking down the
barrel, as it were, of a gun. Some barrel, for it is about 4000 light years away
and 500 times the diameter of our solar system.
M56
This Globular Cluster is in the constellation of Lyra like the Ring Nebula.
For Charles Messier, discovering it in 1779, it seemed "without stars, having
little light." This modern picture from VATT shows there are in fact countless,
jewel-like stars, which were all born from a common giant cloud of gas and dust.
The brighter, yellower ones were more massive initially and so evolved faster
into "yellow giant" stars than the fainter, bluer ones.
NGC 7479 (visible) A spiral galaxy, with a central
bar, showing bluish knots of new-forming stars in its arms. The knots are
blue from the predominance of very hot, young stars in them. Compare this
image with the one to the right, taken in the near-infrared. NGC 7479 is
in the constellation of Pegasus and about 105 million light years away.
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NGC 7479 (infrared) A 10-minute exposure through a
near-infrared filter (the K band) made with the Arcetri Infrared Camera
(ARNICA). The scale is 0.5 arcsec/pixel and the field of view about 2
arcminutes. Taken on Oct 31, 1996, by L. Vanzi and G.P. Tozzi. The
central bar and the inner structure of this spiral galaxy are well-shown
by this infrared picture. |
M33 Galaxy This picture shows the core of a companion
spiral galaxy to the Andromeda galaxy M31. The full galaxy spreads about eight
times larger, but it is smaller than both our Milky Way galaxy and the even
larger Andromeda galaxy. However, at about 3 million light years distant, it is
probably the furthest object capable of being seen by the naked eye. A
telescope-aided image does reward us with much detail of its stars and dark gas
lanes. This picture, taken and processed by Matt Nelson, is a composite of 13
B filter and 6 V filter images, each with 2 minute exposure time. The last image
was at a zenith distance of less than 2 degrees from the zenith, a real test of
tracking for an alt-azimuth telescope like VATT.
Abell Cluster 397 This cluster of galaxies is at an
average of about 360 million light years away from earth, but one can still make
out the different shapes of the galaxies. In the picture is a particularly good
example of a spiral galaxy edge on to us (largest galaxy in center), and another
of a face-on spiral (bottom center). This picture by Matt Nelson consists of
a set of four V filter, five R filter and seven B filter images, taken over
about an hour at 4 minutes each. The history of taking the images in each filter
is recorded in the trail of an asteroid in the left center of the picture.
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Asteroid Pholus passing NGC 5964
In May 2003, Steve Tegler (NAU) and Guy Consolmagno used the VATT to observe the unusual asteroid/comet nucleus 5145
Pholus, and one night it happened to be passing by the galaxy NGC 5964.
Note that, like the picture of Abel 397 above, they took three separate images in red, green,
and blue, and then combined them to make this image; but since Pholus was moving between images,
it appears as a rainbow "streak" in the image. Tegler did the image processing.
Spiral Galaxy NGC 3147
This galaxy in Draco, showing tightly wound spiral arms around a small nucleus, was observed in April 2004 at VATT by Francesco Di Mille and Alessandro Omizzolo as part of their study of isolated Seyfert galaxies. Di Mille combined the three separate images in red (3 min.), green (5 min.), and blue (10 min.) to make this composite color picture.
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NGC 628 (R-band) A spiral galaxy at a distance of
9.7 Mpc (32 million light years). It was taken by Vatican Observatory
astronomer José Funes, S.J. and Sanae Akiyama with the University of
Arizona. The images, obtained at the VATT in November 2001, illustrate the
H-alpha survey of star formation in the local universe. The R-band image
is at left; the H-alpha image at right. The H-alpha image reveals those
regions where stars are forming. |
NGC 628 (H-alpha) See description to
left. |
Please click on either image to see both together.
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The Shape
of Bulges R-band images of the sample of S0-Sa galaxies observed by
Michele Cappellari and José Funes with the VATT in May 1999.
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Hale-Bopp Comet a 300-second exposure through a
near-infrared filter (the K band) made with the Arcetri Infrared Camera
(ARNICA), with the scale and field of view as for NGC 7479 (scale 0.5
arcsec/pixel, field about 2 arcminutes). Taken on November 24, 1996, by L. Vanzi
and F. Mannucci. Outgassing from the surface of this very active comet has
released dust grains which are shown up by the sunlight scattered from them. The
sun lies to the left; i.e., the most prominent dust jets are in the direction of
the sun. The Arcetri team monitored the changes in these jets from infrared
pictures taken on several nights in October and November 1996.
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The following three images were observed in a V (yellow-orange) filter by
Richard P. Boyle and Austin Tomaney on Jan 31, 1995, They were among the images
taken during the first scientific observing run at VATT, and they were taken
with the Columbia University CCD camera, having an 11 arc minute field of
view.
Spiral galaxy NGC 2903 a 400-second exposure o this home
for 100 billion or more stars. It is fairly similar to our own Milky Way galaxy,
though ours lacks such a prominent central bar.
M3, the Globular Cluster a 100-second exposure of a
collection of stars in a ball more than 200 light years in diameter and 40,000
light years from Earth. This cluster is made up of perhaps as many as half a
million stars, held together by mutual gravitational attraction since their
formation some 10 billion to 15 billion years ago.
M1, the Crab Nebula a 300-second exposure of the
remnant of a supernova that exploded in 1054 AD. The explosion was so brilliant
it was visible during the day and was recorded by observers around the world,
including the Anasazi of Chaco Canyon in the ancient American Southwest, many
argue. The remnant has been continually expanding since it exploded, so this
image is a contemporary "snap shot" of the Crab Nebula.
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| Last Updated: January 15, 2005, by Chris Corbally, S.J. |
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