NASA was very much in the news... starting things off was the
successful return, last Sunday morning, of
the
Stardust Capsule. Stardust was a mission which set out and captured
particles from the comet Wild 2. It's 3 billion mile journey ended (as
planned) out in the Utah desert when the capsule parachuted to safety at
the US Air Force base in Dugway. Scientists are anxiously studying the
particles in an attempt to uncover what it was like in the formative years
of the solar system.
Next, NASA proved that the third time really is the charm... as the
twice delayed
New Horizons spacecraft successfully lifted off to begin its 10 year
journey to
the planet Pluto. New Horizons is the first mission in NASA's New
Frontiers program of medium-class planetary missions... and it will be the
first spacecraft to visit Pluto and its moon, Charon. New Horizons will
swing by
the planet Jupiter in February of 2007 for a gravity assist
maneuver... and reach Pluto in July of 2015. After that, it will continue
out into the Kuiper
Belt.
The Clark
Planetarium recently premiered its newest production entitled "Black
Holes". This was a multi-media extravaganza to say the least.
Incorporating the latest information on black holes, the movie graphically
portrayed what we know... and don't know about these most powerful objects
in the universe. I'd highly recommend making the trip down to Salt Lake to
see this amazing presentation.
This week, we'll be pointing our telescopes towards the constellation
Auriga the Charioteer. Auriga is well placed for observation shortly
after dark. It's located due north of the constellations
Orion &
Taurus. Auriga is home to a handful of
star clusters that are simply stunning to view. These bright clusters
are easy prey in a typical pair of binoculars. In telescopes, the views
are nothing short of spectacular.
If you'd like to take a peak at some of these beautiful star
clusters... but don't have a telescope or binoculars... you're in luck...
because the
first event in our winter snow shoe / star party series will be taking
place tonight... Friday 1/20 out at the Swanner Nature Preserve in Park
City. Utah Skies and the folks at Swanner will be be teaming up to host
the event which begins at 8:00pm. Dress warmly and plan on a good time...
snowshoeing through the beautiful Swanner Nature Preserve. You'll learn
about the many nocturnal creatures that inhabit the preserve... all while
taking in the beautiful star filled sky above. Snow shoes are available if
you need them... and... admission is free. Additional information can be
found online... or you can call the Swaner Nature Preserve at 435-649-1767
Astronomy News
From Around The World, and Beyond
X-Ray Vision
Friday, January 20th, 2006 - Under the direction of NASA and MIT, NASA's Rossi X-ray Timing
Explorer gathered
a decade's worth of data on x-ray emissions from the Milky Way. In a
fascinating
time
lapse movie,
we are able to see the brightest x-ray sources in our galaxy! The
blinking lights indicate
changing x-ray emission intensities, thought to be caused by
variations in the amount of matter being crushed into the intense
gravity from neutron stars
and black
holes. Check out
space.com's
article for more details. This incredible image sequence was taken by Cyril Cavadore
Swaner Nature Preserve/Utah Skies Snowshoeing and Star Gazing
Friday, January 20th, 2006 - Park City based non-profit Swaner Nature Preserve and Utah Skies will co-present an evening of snowshoeing and star gazing this Friday, January 20th. "Last year's trips were a lot of fun for everyone that participated, and extremely well received," said Utah Skies co-founder Don Brown. Friday night's event will include a nice mix of snowshoeing into the Preserve, informative presentations on the Preserve's nocturnal wildlife, some excellent star- and moon-gazing (Utah Skies will provide the telescopes), discussions of the wonder and importance of the night sky and light pollution reduction, moon and constellation lore, and more. This is a great activity for the entire family, and interested community members and visitors are encouraged to participate.
Check for updates on KPCW and in the Park Record, and log onto either www.swanernaturepreserve.org or www.utahskies.org.
There is no charge to participate, and snowshoes will be provided to the first 60 people that need them. Snacks and hot drinks will be served around a fire. You are encouraged to bring your own snowshoes, as well as binoculars. For more information, call Swaner Nature Preserve at 649-1767.
Scientists Confirm Comet Samples, Ecstatic with Return
Thursday, January 19th, 2006 - (NASA) Scientists said they were delighted with Stardust samples returned from the tail of a comet after an almost three-billion-mile journey. Speaking at NASA's Johnson Space Center, Peter Tsou, Stardust deputy principal investigator, said researchers were ecstatic with the collection of the cometary and solar materials from outer space. "Stardust is the realization of a 25-year dream to capture and return samples from a comet," Tsou, of the Jet Propulsion Laboratory at Pasadena, Calif., told news media representatives at Johnson Space Center, Kennedy Space Center and NASA Headquarters. "This exceeded all of our grandest expectations," stated Dr. Donald Brownlee, Stardust principal investigator, also astronomy professor at the University of Washington, as he described the capsule return and capture process. The material responsible for capturing the tiny particles -- Aerogel -- is a sponge-like solid made of 99 percent empty space.
Headed for Pluto!
Thursday, January 19th, 2006 - (NASA) The third time was the charm for New Horizons. Two consecutive launch attempts earlier in the week were foiled by high winds at the launch site and a power outage at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md., which operates the spacecraft now that the mission is underway. Liftoff occurred at 2:00:00 p.m. EST from Cape Canaveral Air Force Station in Florida, and 50 minutes after launch, the New Horizons spacecraft separated from the launch vehicle and began its journey to the edge of the solar system. New Horizons is now headed for a distant rendezvous with the mysterious planet Pluto almost a decade from now. See the NASA and Johns Hopkins University Advanced Physics Lab websites for more info.
Another Day's Delay
Wednesday, January 18th, 2006 - (NASA) New Horizons Launch Rescheduled -- Launch of NASA's New Horizons spacecraft at Cape Canaveral Air Force Station, Fla., has been postponed, pending resolution of a weather-related power outage at the spacecraft mission operations center in Maryland. Mission managers will decide later today whether to proceed toward Thursday's launch opportunity, which runs from 1:08 p.m. to 3:07 p.m. EST. Severe storms in the Baltimore-Washington area had knocked out power in several locations, including the campus of the Johns Hopkins University Applied Physics Laboratory in Laurel, Md., where the New Horizons spacecraft will be operated in flight. With primary power out the New Horizons mission operations center was on backup power, but New Horizons mission managers wanted to have sufficient backup to those systems in place before conducting critical launch and early flight operations. The New Horizons launch window extends through Feb. 14. As the first spacecraft to visit Pluto and its moon Charon, New Horizons looks to unlock one of the solar systems last, great planetary secrets. After launch aboard an Atlas V, the New Horizons spacecraft will cross the entire span of the solar system and conduct flyby studies of Pluto and its moon, Charon, in 2015. The seven science instruments on the piano-sized probe will shed light on the bodies' surface properties, geology, interior makeup and atmospheres.
Black Holes Unveiled
Wednesday, January 18th, 2006 - The Clark Planetarium unveiled its newest star show last night: Black Holes. Created by the Clark Planetarium with production expertise from Skywalker Sound and narration by John De Lancie (who also attended last night's event), the audience was treated to a state-of-the-art presentation and up-to-the minute information. The premiere was followed by a fascinating and charismatic discussion by Weber State's Dr. Stacy Palen. Take this chance to learn more about spaghettification, white holes and more!
NASA Scrubs Pluto Mission Launch: High Winds
Tuesday, January 17th, 2006 - Today's planned launch of an Atlas V carrying NASA's New Horizons spacecraft has been scrubbed due to high winds at the launch pad. The next launch date and time will be announced shortly. New Horizons is designed to help us understand worlds at the edge of our solar system by making the first reconnaissance of Pluto and Charon - a "double planet" and the last planet in our solar system to be visited by spacecraft. Then, as part of an extended mission, New Horizons would visit one or more objects in the Kuiper Belt region beyond Neptune. The first 13 months of the mission will include spacecraft and instrument checkouts, instrument calibrations and trajectory correction maneuvers. There will also be rehearsals for an encounter with Jupiter in spring 2007, in which the giant planet will provide a slingshot-like gravity boost that could save New Horizons up to three years of flight time. This encounter will be followed by an approximately 8-year interplanetary cruise to Pluto. Check out this press kit for more, detailed info on the New Horizons mission.
Black Hole Presentation Tonight!
Tuesday, January 17th, 2006 - Discover the power and awe of black holes at a special Black Holes Celebration Tonight at The Clark Planetarium. Explore this incredible phenomenon by seeing Clark Planetarium’s newest full-dome production Black Holes (narrated by film actor John De Lancie, “Q” in the newer Star Trek series), followed by a presentation of the latest Black Holes research from Dr. Stacy Palen of Weber State University. Afterwards, please join us for a reception with light refreshments.
Actor John De Lancie will make a guest appearance at the reception to greet our guests.
Tickets for the event are just $15 for Clark Planetarium members and $20 for non-members. Reserve your space now, tickets are available on a first-come, first-serve basis. Tickets are available at the ticket counter at Clark Planetarium or with a credit card by calling 801-456-4966.
Event Schedule: Doors Open: 6:00 p.m.
Black Holes Premiere: 6:45 p.m.
Dr. Stacy Palen Lecture: 7:30 p.m.
Reception: after lecture, until 9:00 p.m
The Morning Upon A Pillar
Monday, January 16th, 2006 - Winter mornings in Park City are typically picturesque, but this morning's sunrise was particularly so as this sun pillar rose with our star, seeming to point the way for the sun's journey over the Uinta Mountains in the east. Sun pillars are the result of sunlight reflecting off the surface of millions of tiny ice crystals in the air, often reaching high above the horizon and taking on the colors of the illuminated clouds.
Star Dust Sample Return Capsule
Sunday, January 15th, 2006 - NASA's Star Dust capsule returned as planned early Sunday morning in the Utah desert. The craft, which had travelled almost 3 billion miles, fullfilled its mission objectives... the capture and return of particles from an orbiting comet. Checkout CNN.com/SPACE for more details.
The ISS In Orion
Saturday, January 14th, 2006 - The International Space Station was caught here passing through the constellation Orion last night. And, what a gorgeous night it was. Clear skies and a big bright wolf moon made for an almost magical display. The moon will be a 99% waning gibbous phase tonight, so... strap on your snowshoes and head outside to howl at the wolf moon!
Light - Cancer Link Explored
Friday, January 13th, 2006 - Researchers are currently studying the link between light at night and certain forms of cancer. The January 2006 issue of Prevention Magazine contained an article documenting several ongoing studies that had shown strong links between bright sleeping conditions and (among other things) increased risk of breast cancer. While not specifically calling out light pollution, the studies lend strong support to the cries of light pollution prevention activists who have long advocated that outdoor lights shine where they're needed and not up nor into people's bedroom windows. The editorial director of Prevention, Rosemary Ellis, was interviewed on the Today Show where she explained the study's findings and suggested that people who have street lights shining into their bedrooms ought to take measures to darken their rooms. While that might work, we feel that a more appropriate solution has responsible parties replacing the poorly aimed street lights with night sky friendly fixtures that put the light on the ground only. Click here for more information on the effects of light pollution on human health.
Star Dust Returns
Thursday, January 12th, 2006 - Late night skywatchers are in for a treat this weekend... even with the bright
moon dominating the night sky. Early Sunday morning (1/15)
NASA's Star Dust capsule will make a spectacular return to Earth
carrying samples collected from Comet Wild 2. Just before 2:00am, the
craft will re-enter Earth's atmosphere and streak through the night sky
crossing northern California and Nevada... enroute to its landing site at
Dugway, Utah. At the peak of its brightness, the capsule will shine some
60 times brighter than the
planet Venus. Those of you who are able to view the event are
encouraged to take pictures... and
submit
them to NASA. It is hoped by researchers that they'll be able to learn
more about the physics of re-entry in the process. Click here for some viewing tips!
Hubble Captures Sharpest Image of Orion Nebula
Wednesday, January 11th, 2006 - (NASA) In one of the most detailed astronomical images ever produced, NASA's Hubble Space Telescope captured an unprecedented look at the Orion Nebula. This turbulent star formation region is one of astronomy's most dramatic and photogenic celestial objects. More than 3,000 stars of various sizes appear in this image. Some of them have never been seen in visible light. These stars reside in a dramatic dust-and-gas landscape of plateaus, mountains, and valleys that are reminiscent of the Grand Canyon. The Orion Nebula is a picture book of star formation, from the massive, young stars that are shaping the nebula to the pillars of dense gas that may be the homes of budding stars. More information and spectacular images are available from the HubbleSite press release.
Spitzer Captures The Milky Way
Tuesday, January 10th, 2006 - The orbiting Spitzer Space Telescope recently captured the heart of our Milky Way Galaxy in this spectacular infrared image. Shown here are the hundreds of thousands of stars that inhabit this innermost region of our galaxy. These stars are usually hidden from view by intervening dust, but Spitzer's infrared vision allows it to clearly see right through. Checkout the Spitzer Newsroom for more details.
The North Stars
Monday, January 9th, 2006 - Polaris, for centuries a beacon for celestial navigators, has been known for some time to be part of a multiple star system. Until recently, the only evidence of a close companion star were the measured effects - a wobble - on the North Star. Recently, however, the venerable Hubble Space Telescope has imaged this giant star's close companion, providing visual confirmation of the triple star system. See HubbleSite for more information and images of this fantastic achievement.
Still Going!
Friday, January 6th, 2006 - Like the Energizer Bunny, The Mars Rovers are still going. Long after their originally scheduled missions have ended, the two Mars rovers continue to cruise the martian surface studying its features and uncovering its mysteries. Originally scheduled to operate for only 3 months, the twin rovers recently celebrated their 2nd anniversary on the planet Mars. Checkout CNN.com/SPACE for more details.
Pluto Colder Than Expected
Friday, January 6th, 2006 - Astronomers using the Submillimeter Array (SMA) on Mauna Kea in Hawaii have shown what many have suspected for some time now.. that Pluto is colder than it should be. Using the SMA's highest resolution, they were able to obtain separate thermal reading for both the planet Pluto and its moon Charon. The findings revealed that Pluto is about 20* colder than expected... a frigid -382F. Current models suggest that the feable amount of sunlight reaching the planets surface does not actually heat the surface. It simply converts some of the nitrogen ice to gas... thereby causing a cooling evaporative process. Checkout SpaceDaily.com for more details.
The sun is a fascinating subject; it's appearance changes from day to day. In fact, it is the only star in the sky that we can see any details on at all! This week, however, the sun is quiet; there are no large sunspots visible.
Mercury remains visible in the western sky, low on the horizon after sunset. Having reached its greatest eastern elongation on the 20th of June, it is falling back into the sun's glare and it's inferior conjunction on July 18th.
Because of its proximity to the Sun, Mercury is never really viewed against a dark background. Rather, it always struggles to be seen over the light of the setting or rising Sun. Patience (and clear skies) will reward you with some beautiful evening views of this planet.
In the accompanying image, Mercury is seen following the sun toward the western horizon of southern Utah with a slender crescent moon close behind.
Still in the morning sky near sunrise, Venus marks a beginning of the "early-bird's" day. Having attained its greatest western elongation earlier in the year, Venus is continuing its inexorable journey appearing to fall into the sun towards its superior conjunction at the end of October.
If you have a telescope handy, take a peek at the love goddess' name sake; the crescent of Venus is lovely indeed. Venus was beautiful along side the Pleiades on the June 23rd , and look forward to the first of July when Venus rises with Aldebaran, the 14th of July when Venus and the Crab Nebula dance together, and the 26th and 27th of August when Venus and Saturn rise together less than a degree apart!
The ESA's Venus Express spacecraft is now in its mission phase. The ESA reports "On 3 June at 13:42 UT, after 207 days of flight, 43 orbits around Venus and many test activities, Venus Express has formally completed its commissioning phase and has entered the routine science phase...The nominal mission is scheduled to last till the end of October 2007." Venus Express will study the planet in great detail, in particular the Venusian atmosphere and clouds.
While we train our optics skyward nightly, there are visual treasures and marvels to behold earthward. Pictured here is a collection of richly colored rock in the Uinta Mountains, a massive range in Northern Utah carved by glaciers from an immense uplift of Precambrian rock. Some of this rock is exposed as colorful quartzite and shales. The main crest of the Uinta Mountains runs west to east for more than 60 miles, rising over 6,000 feet above the Wyoming and Uinta Basins to the north and south. The highest point in Utah is Kings Peak at 13,528 feet.
The Moon will be new on the 25th, and begin waxing crescent until first quarter on July 3rd, when it will wax gibbous approaching full on July 11th. Those observers that consider the moon "light pollution" look forward to this time of the synodic cycle as the moon travels with the sun, keeping the night sky dark, favoring views of distant, elusive, and faint fuzzies - galaxies, nebulae, and clusters.
Remember, as the moon waxes and wanes, you can look forward to those phases where Moon observations are most fascinating. Features appear - mountains, craters, rilles - as the sunlight casts long, defining shadows. Look along the portion of the Moon separating light from dark, known as the terminator, for the greatest contrasts.
The Red Planet is found high in the western sky at sunset as it moves to it's superior conjunction opposite the Sun later in the year. Look at this sweet shot taken by Utah Skies member Brian Jolley last year when Mars was at its closest. He took this through the historic Clark refractor at Lowell Observatory.
Even without a telescope the view of and around Mars is interesting. Having moved through the constellation Gemini, Mars is approaching a conjunction with Saturn around June 17th. On its way, it will pass through M44!
Planet Jupiter | Solar System | The Utah Skies Report
Jupiter is currently rising late in the afternoon, placing it favorably for those wanting views of the Sun's largest planet before heading off to bed.
This image is an example of what Jupiter has to offer viewers: interesting detail in the equatorial bands and, if conditions are right, swirls and festoons. Much beautiful structure can be seen through a typical telescope, but results vary depending on telescope aperture and sky conditions. Too, the Great Red Spot has some company: another storm has grow in proportion near the GRS, and has come to be known as Spot Jr!
If you have binoculars, point these towards Jupiter. While you won't be able to see any details on the planets surface, binoculars will clearly show you several of Jupiter's brightest moons, and regular observations will show them jockey for position as they orbit the giant planet. The movement is quite apparent, sometimes even in the span of a few hours.
This sweet shot of Jupiter nicely shows its great red spot and some of the incredible details just waiting your observation. Additionally, you can see one of Jupiter's moons eclipsing the giant planet. The round "ink spot" on the planet's surface is the shadow cast by its moon. Watching Jupiter's moons as they orbit and occasionally transit the giant planet is a very interesting part of observing Jupiter.
Saturn is now rising mid-morning and reaching the highest point in its path across the sky in the late afternoon; the spectacular views of the ringed planet will soon come to an end as it moves behind the sun with the passing weeks. Some truely great views of the ringed planet and its satellites are available on the Cassini Huygens pages. This sweet shot was taken by Don Brown of Utah Skies.
Uranus is currently rising in the early morning, about an hour after Neptune.. The Earth and Uranus have ostensibly achieved their greatest separation, and will soon begin to draw nearer again.
This fascinating image was taken from a ground-based telescope in the European Southern Observatory.
Planet Neptune | Solar System | The Utah Skies Report
The planet Neptune, is currently rising several hours before the sun, leaving you precious little time to view the 8th rock. To speed up your acquisition of the planet, look just east of south before first light. Find Deneb Ageldi; Neptune is just about 4.5° west and north of "the water goat's tail". At just a touch brighter than mag 8, Neptune should be visible as a faint star-like object in binoculars or as a bluish object in a telescope. Once you've found it, higher powers will clearly reveal the disk of the planet .
This beautiful image of Neptune and its moon, Triton, was taken by the Voyager 2 spacecraft from a perspective that will never be had from Earth. Interesting to note is the gray hue of the planet in this image. The atmosphere of the planet preferentially scatters the light forward from this vantage and so removes the bluish tinge, and reddens the color.
Planet Pluto | Solar System | The Utah Skies Report
Pluto is rising before midnight, giving you the time you'll need to seek this faintest of planets. To know you've seen Pluto is going to require observations over several nights, carefully noting star patterns until you see one point of light move relative to the others: that's Pluto!!! But don't try this at home kids, unless you have some serious aperture, because at mag 15+, you're gonna need it!
This image of Pluto and its moon Charon was taken by the Hubble Space Telescope, showing the improved performance of a space-based observational platform over ground-based telescopes.
The Hubble Space Telescope has distinguished itself as a premier source of astronomical images. Amazing HST images have graced the covers of major magazines and newspapers worldwide. In recognition of the amazing advances in astronomy and physics which have come from Hubble discoveries, we'd like to devote a section of this report to some of these incredible images, and share some of them with you. Our latest comes directly from the Hubble Heritage Team.
Dusty Planetary Disks Around Two Nearby Stars
Resemble Our Kuiper Belt
These two bright debris disks of ice and dust appear to be the
equivalent of our own solar system's Kuiper Belt, a ring of icy
rocks outside the orbit of Neptune and the source of short-period
comets. The disks encircle the types of stars around which there
could be habitable zones and planets for life to develop. The
disks seem to have a central area cleared of debris, perhaps by
planets.
The new disks, each about 60 light-years from Earth,
bring to nine the number of dusty debris disks observable at
visible wavelengths. The new ones are different, however, in that
they are old enough — more than 300 million years — to have
settled into stable configurations akin to those in our own solar
system, which is 4.6 billion years old.
The wide disk on the
left, which is inclined obliquely to the line-of-sight, surrounds
HD 53143, a K star slightly smaller than the Sun but about 1
billion years old. The narrow disk on the right, which is tipped
nearly edge-on encircles the star HD 139664, an F star slightly
larger than the Sun but only 300 million years old. The sharp
outer edges of the narrow belt may be telltale evidence for the
existence of an unseen companion object that gravitationally keeps
debris gravitationally corralled, in the same way that shepherding
moons trim the edges of debris rings around Saturn and Uranus.
A
survey by NASA's Hubble Space Telescope shows that such disks fall
into two categories: those with a broad belt, wider than about 50
astronomical units; and narrow ones with a width of between 20 and
30 AU and a sharp outer boundary, seemingly like our own Kuiper
Belt. An astronomical unit, or AU, is the average distance between
the Earth and Sun, about 93 million miles. Our Kuiper Belt, for
example, is thought to be narrow, extending from the orbit of
Neptune at 30 AU to about 50 AU.
The false-color images were
taken with Hubble's Advanced Camera for Surveys in September 2004.
The black central circle is an image artifact produced by the
camera's coronagraph which blocks the glare from the central star
to allow the much fainter disks to be seen. A smaller black circle
at the edge of each photo is a "coronagraphic finger" also used to
block light from a bright object in the field.
Credit:NASA,
ESA, and P. Kalas
(University of California, Berkeley)
Our Constellation report is an easy way for people to
become familiar with the nighttime sky. We’ll discuss myths associated
with the various constellations as well as describing the numerous deep
sky objects residing in the area. No equipment is required to view the
constellations, though a star chart can be quite helpful. This ease of
observing makes constellations a natural place to begin your journey to
the stars.
This weekend we move on to the constellation
Auriga the Charioteer.
This should be an easy constellation to find. You're probably familiar
with several of it's neighbors and it's a fairly bright collection of
stars... led by it's alpha star, Capella.
The focus of our efforts this week will be the deep sky objects of
Auriga . Auriga can be found high and to the east shortly after
dark. It's sandwiched in between a bunch of well known constellations... Perseus
to the west... Gemini to the east... Taurus and Orion to the south.
Capella is located a mere 45 light years distance,
and.. at mag0.08 is the 5th brightest star in the sky. It has a slight yellowish
tint to it and.. it's a double star. It's companion, however, is too close
and too faint to be seen. It was first detected by astronomers at the Lick
Observatory in 1899
Checkout this awesome
Jerry
Lodriguss image of Auriga. Notice
the detail he's captured. THIS is what Auriga would look like under truly
dark skies. Jerry captured this image using a 85mm f/1.4 Nikkor lens for a
5 minute exposure.
I've mentioned it several times, but... for any
newcomers, you have to checkout Jerry's site. He does amazing work!
Ok, let's start things off with
the first of three Messier Objects residing within Auriga, Open Star Cluster
M38(mag6.4). Estimates place this object about 4,200 light years distant.
And, with a diameter of about 20', astronomers estimate an actual diameter
of about 25 light years. M38 is believed to be about 220 million years old
and contains a yellow giant of mag 7.9 as the brightest of its roughly 100
member stars.
While you're enjoying M38, see
if you can spy tiny open cluster NGC1907. It's only minutes away, but it's
diminutive appearance leads many to overlook it. When you spot it,
pump up the magnification a notch. This will make it the only object in
the field of view, and allow for better observation.
Don
Brown's image to the right shows M38 and NGC1907. The 20 minute
guided shot was captured on 800 speed Fuji film in an Olympus OM1 through
a Takahashi FS102 at prime focus...
Moving on about 2.5° to the southeast, we come to another fine
Open
Star Cluster Open M36(mag6.0). M36 is about 4,100 light years distant
and spans approximately 12'. It has about 60 member stars, the brightest of which are
about mag 9. Estimates of the age of M36 point to about 25 million years.
This is quite young for a star cluster. M36 is the smallest of Auriga's
Messier clusters.
The accompanying image was taken onSeptember 14th,
2003 by Utah Skies own
Anthony Arrigo, using a Sony DSC-F717 digital camera attached to a 150mm
Maksutov-Cassegrain telescope. It is a single 30 second exposure.
Next up is yet another beautiful
Open
Star Cluster M37(mag5.6). M37 is the brightest of the 3 open clusters in
Auriga. It is also the richest of the 3, containing roughly 150 member stars brighter than mag
12.5. Some estimates suggest upwards of 500 stars. Astronomers estimate
its age at about 300 million years. This number is derived from the high
number of red giant stars found in the cluster. Its distance is estimated
to be between 3,600 and 4700 light years. Its diameter is 24' which corresponds to
about 20 to 25 light years across. M37 is always my favorite stop in Auriga. The
bright, reddish star at it's center immediately becomes visible as my eyes
lock on. It's quite a beautiful site.
This image was taken by Utah Skies own Don
Brown using a 4", f/8 Takahashi reflector and an SBIG STV.
He captured 15 60-second luminance and 4-each 60-second RGB exposures on Monday night, January 6th, 2003. They were then combined in Maxim DL.
Next we'll hit a
cluster loaded with nebulosity, NGC1931(mag11.3)
In fact, it's got so much nebulosity, you'll almost lose the cluster.
Anyway... this whole object is kind of small... about 3'x3' so once you've
found it, you'll want to crank up the magnification a bit. I'd also
compare the views with and without various nebula filters.
This beautiful shot was taken by Al
Kelly. Make sure you visit his
website... it's loaded with awesome shots and great information on how
to take great CCD images.
Next
up is a sweet Open Star Cluster, NGC1857(mag7) as imaged by Former Featured
Astrophotographer, Al Kelly. Have you been to
Al's website lately? If not, you're
missing out. Al just keeps on cranking out impressive views of some of the
night skies most beautiful deep sky objects.
Let's wrap things up with this weeks Utah
Skies ChallengeObject, IC405 also known as The Flaming Star
Nebula.
We've got another beauty from Jerry
Lodriguss for you. Look at the amount of nebulosity he's captured. No
wonder its called the Flaming Star Nebula. It really does look like the
star is on fire.
This object is a combination reflection and emission
nebula. To best view the nebula, you'll want some aperture, dark skies and
an H-Beta filter.
Good Luck!
If you are able to find all of these objects, you may be one of the few, the proud, the Deep Sky Obsessed.
E-mail your findings to DeepSkyObservations@UtahSkies.org.
The last several months have brought us the release of several large and ground
breaking studies on the impact that light pollution has on your health. I
thought it was about time that several of these were brought to your attention
so that we might (hopefully) get a few more folks to reconsider their
outdoor lighting practices.
Starry Night Lights has compiled a more comprehensive listing of the effects of
light pollution and human health on their website along with some valuable
light pollution
information.
Most recently
Science News
reported on a study conducted at the Bassett Research Institute in Cooperstown,
N.Y which found that "Light at night is now clearly a risk factor for breast
cancer. Breast tumors are awake during the day, and melatonin puts them to sleep
at night." Add artificial light to the night environment, and "cancer cells
become insomniacs," he says. "Sleep per se is not important for melatonin," says
Russel J. Reiter, a neuroendocrinologist at the University of Texas Health
Science Center in San Antonio. "But darkness is." Similar studies could show
whether exposure to nocturnal light poses a prostate cancer risk to men, as some
researchers suspect, or promotes other cancers previously linked to light at
night
Additionally,
Prevention Magazine did a story on the link between light and cancer in
their January 2006 issue. What they found was a bit unnerving to say the least.
Exposure to light at night reduces the bodies production of melatonin... our
premier cancer fighting agent. While not specifically tied to light pollution,
the studies showed that high levels of light at night (from any source) caused a
measurable decreases in the bodies production of melatonin. This is certainly
something to think about if you're a late night tv addict. It's also something
to think about if you've got an unshielded street light or neighborhood light
near any of your homes bedroom windows. As if to validate the study... it was
found that the blind are 50% less likely to get cancer than those of us with
sight.
Another study found that women who work the night shift are more likely to
get breast cancer because their bodies produce less melatonin. This just makes
sense... as our body produces the majority of its melatonin during the middle of
the night... generally 1-4am. If you're not sleeping then (and don't have access
to completely darkened sleeping quarters), your body will produce significantly
reduced amounts of this vital substance.
Finally, a recent study released by
the
American Association for Cancer Research was the first to show that the
tumor growth response to exposure to light during darkness is intensity
dependent and that the human nocturnal, circadian melatonin signal not only
inhibits human breast cancer growth but that this effect is extinguished by
short-term exposure to bright, white light at night.
Interested in reducing your risk of cancer? Sure you are. There are a few
simple things you can do that can make a world of difference.
Sleep in a totally dark room. This means no night lights... no bathroom
lights left on down the hall... no street lights shining in your windows. If
you have obnoxious street lights nearby... or some of your neighbors have some
pesky lights... either get these replaced... or consider investing in some
room darkening shades or blinds.
Get 9 hours of sleep each night (seriously). Folks who get 9 hours / night
are 1/3 less likely to get caner than those who get 7 or 8 hours.
Reduce the wattage of your bulbs. Dimmer lights impact the body less
extensively.
Use red lights at night (and you thought that red flashlight was only good
for astronomy). This is another biggie. Light at the red end of the spectrum
has significantly less impact on the bodies melatonin production than light at
the blue end. Fluorescents on halogens are the worst.
Get your light during the day... from the Sun. 10 to 15 minutes worth of
bright sunshine signals the body that a new day is underway. This is a key
factor in regulating the circadian rhythm. In the winter, you might need to
head outside for a quick lunchtime walk. The presence of the sun helps the
body to better differentiate man-made light from natural light.
Here's
a nice
wildlife friendly bollard from the folks at
Visionaire
Lighting.
The Sahara
Bollard is a short fixture coupled with full cut-off optics to
ensure that light will shine only on the ground beneath them... and
nowhere else. This is ideal for sensitive environments... like beaches
where sea turtles are nesting.
Light pollution and sea turtles simply don't go together. Did you
know that virtually every species of sea turtle native to the US is
either threatened or endangered... and light pollution is a major
contributing factor. According to the
Florida Fish and Wildlife
Conservation Commission... Light pollution is at the heart of the
decline of sea turtles. It impacts their nesting habits... and the
ability of young hatchlings to survive. By using only
turtle friendly outdoor lighting products, you can help this
beautiful creature to recover.
By placing all their light output directly onto the ground, these
fixtures allow folks to move about safely without impacting creatures
that live in the vicinity. Besides protecting wildlife, these fixtures
are ideal for virtually any pathways where you want to keep a low
profile... and don't want to disturb the surroundings. Come to think of
it... that should cover virtually all lighting installations.
As you'd expect, you can find
this gorgeous, dark sky friendly outdoor lights in the
Bollards section of your favorite outdoor lighting retailer, Starry Night Lights!