Clear skies and a waning lunar phase are aligning to make this an ideal
weekend for some sweet observations of the wonders of the fall night sky.
Going deep... This weekend we point our telescopes towards
the
constellation Perseus the hero. Perseus is home to a handful of deep
sky treasures. On top of most any list is the Double Cluster in Perseus.
The Double Cluster is exactly that... a pair of open star clusters
appearing side by side in the night sky. The Double Cluster is pretty easy
to find. They sit midway between the constellations Perseus and
Cassiopeia. Under moderately dark skies, they are clearly visible to the
naked eye as a "fuzzy" patch of light between the two constellations. The
Double Cluster fits nicely within the field of view of most telescopes...
providing a beautiful view that is seldom exceeded. Just to the southeast
of the Double Cluster is another gem for you to discover... planetary
nebula M76. This is a beautiful little nebula. It is loaded with loads of
subtle details. Also known as The Little Dumbbell M76 is about the same
size as M27. But... due to its greater distance, it appears quite a bit
smaller. Visible in telescopes as small as about 90mm under dark skies,
this object overflows with details as you increase the aperture.
We mentioned that we're moving towards the waning lunar phases. Look for a
waning gibbous moon to rise about an hour and a half after dark tonight...
and later each night there after.
The Moon will be about 90% illuminated tonight... so... when it
rises... its pretty much time to focus on solar system objects... like the
moon itself... and
the
planet Mars.
Mars can be found high and towards the southeast shortly after dark. Its
still very near its biggest and brightest for the season, so... you can
expect to get some really nice views in. Those of you getting out early
enough will have the ability to see bright Mars high in the eastern sky...
and brilliant Venus high and towards the west.
Finally, Utah Skies would like to invite you to attend
Recycle Utah's 3rd Annual Green
Building Seminar and Trade Show. Come on down to the The Canyons Grand
Summit Resort Hotel here in Park City between 8am & 3:30pm today.
Sponsored by the Park City Area Home Builders Association and Park City
Municipal Corporation, this event is an exciting opportunity to find out
about night sky friendly lighting and other green building techniques.
Astronomy News From Around The World... and Beyond
Friday, November 18th, 2005
Roadtrip Anyone?
NASA announced plans to involve commercial entities in the development and support of the orbiting International Space Station. "The exploration of the solar system cannot be what we want it to be if the cost is borne solely by American taxpayer" NASA Administrator Michael Griffin said recently. This is the perfect opportunity for those of you dreaming of being an astronaut. Checkout CNN.com/SPACE for more details.
Thursday, November 17th, 2005
Fire In The Sky
What fiery conflagration is this? A distant stellar nursery in our galaxy where the energy of growing stars excites and ionizes the surrounding dust and gas creating these beautiful colors? Or could this be dust lanes obscuring the violent center of a massive galaxy? Actually, this beauty found us this morning at sunrise; the sun's light passing through the atmosphere while low on the horizon is cast on clouds in the characteristic and familiar hues of red and orange -- the colors preferentially scattered by the particles in the air. One of the more prevalent particulate aerosol pollutants - sulfur - results in magnificent sunsets, but unfortunately, serious environmental harm, too.
Green Building Seminar and Trade Show
Utah Skies will be exhibiting Responsible Outdoor Lighting at Recycle Utah's 3rd Annual Green Building Seminar and Trade Show. Sponsored by the Park City Area Home Builders Association and Park City Municipal Corporation, this event is an exciting opportunity to get the concept of responsible lighting in front of our local building community, and pitch Dark Sky Preservation as well! Come join us at the The Canyons Grand Summit Resort Hotel Park City, Utah on Friday, November the 18th.
The Greek goddess of the Moon is the virgin Artemis, goddess of fertility and childbirth, and said to ride her silver chariot across the sky, shooting her arrows of silver moonlight to the Earth below. The Roman god of war, Mars, has long been associated with battle and bloodshed; the red planet undoubtedly earned its name for this reason. In this image, the Moon and Mars were captured in close proximity visually - in conjunction - and were slightly less than 2 degrees apart. This juxtaposition of the Moon and Mars offers interesting contrasts. Mars is far larger than the Moon (6700 kilometers vs. 1700 kilometers in diameter), yet appears much, much smaller due to the fact that the Moon is so much closer (378 thousand kilometers vs. 69.4 million kilometers). The Moon implies fertility, healing, and chastity whereas Mars represents aggressiveness, strife, and sexual drive. The Moon is Earth's natural satellite while Mars is a planet with two natural satellites, Deimos and Phobos.
Saturday, November 12th, 2005
Approaching Conjunction
A nearly full moon will pose alongside the planet Mars this coming Monday evening (11/14/05). The pair will pull within 1 degree of each other... much closer than in the accompanying image. Look for the pair to rise in the east just before sunset. The Moon, being much brighter, will be visible immediately, while Mars will not show itself until skies begin to darken after sunset. Checkout our conjunctions page for other similar events.. past and future.
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.
A Gallery of Einstein Rings
The thin blue bull's-eye patterns in these
eight Hubble Space Telescope images appear like neon signs
floating over reddish-white blobs. The blobs are giant elliptical
galaxies roughly 2 to 4 billion light-years away. The bull's-eye
patterns are created as the light from galaxies twice as far away
is distorted into circular shapes by the gravity of the giant
elliptical galaxies. This phenomenon is called gravitational
lensing, first predicted by Albert Einstein almost a century ago.
Gravitational lensing occurs when the gravitational field from a
massive object warps space and deflects light from a distant
object behind it.
The bull's-eye
patterns are so-called "Einstein rings," which are the most
elegant manifestation of the lensing phenomenon. Einstein rings
are produced when two galaxies are almost perfectly aligned, one
behind the other.
The images were taken between August 2004
and March 2005 by the Hubble telescope's Advanced Camera for
Surveys. They are part of an ongoing survey, called the Sloan Lens
ACS (or SLACS) Survey, of about 150 galaxies to hunt for
gravitational lenses. So far, the survey has netted 19 new
gravitational lenses, adding significantly to the 100 or so
previously known lenses. The survey also has identified eight new
Einstein rings. Only three such rings had been seen previously in
visible light.
Credit:NASA,
ESA,
and the SLACS Survey team: A. Bolton (Harvard/ Smithsonian), S.
Burles (MIT), L. Koopmans (Kapteyn), T. Treu (UCSB), and L.
Moustakas (JPL/Caltech)
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.
Perseus, at the request of King Cepheus and Queen Cassiopeia, flew in on the winged horse Pegasus and rescued their daughter, the princess Andromeda from the clutches of the monster Cetus. For this he was handsomely rewarded. and... of course he got the girl :)
Ok, let's start things off with one of my absolute favorites, The Double Cluster in Perseus NGC869(mag4.3) and NGC884(mag4.4). These twin gems lie side by side separated by a mere 1/2°. They easily fit in the same telescopic field of view in all but the longest focal length instruments. In binoculars, they are beautiful. In a small telescope, the are beautiful. In a large telescope...words can not describe the beauty. But... I'm gonna try :) In the 25", the Double Cluster appears like diamonds strewn across a black velvet background. They seem to sparkle and shimmer as if electrified...like nothing you've ever seen.
The Double Cluster is pretty easy to find. They sit midway between Perseus and Cassiopeia. Under moderately dark skies, they are clearly visible to the naked eye as a "fuzzy" patch of light between the two constellations.
I took the accompanying image in April of 2002. They are without a doubt among the finest deep sky objects in all the heavens. And... they'll be well positioned overhead for the next several months.
Here's an effort by Don Brown; there sure are alot of stars in that field of view!
The two images above focus on the individual components of the Double Cluster. NGC869 on the left and NGC884 on the right. Both images were taken on 8/26/03 by Utah Skies own Anthony Arrigo through a 150mm Orion Argonaut (Mak-Cass) using a Sony DSC-F717 digital camera. The exposures were 30 seconds each using eyepiece projection to 225x.
Next we'll hit a Reflection Nebula/Star Cluster combination designated as IC348(mag7.4). Located by mag4 Omicron Persei, this interesting little object should be fairly easy for you to track down. Not that you'd no it from the picture, but this object emits very strongly in the x-ray regions. More than 100 defined x-ray points have been detected.
Moving on, we come to Open Star Cluster M34(mag5.2) This beautiful little cluster is much more subtle than the Double Cluster. I think it's very interesting that Messier found this cluster, but not the Double Clusters located just to the north. But.. he did. Anyway... This cluster has about 50 members which are probably best viewed at low to medium power. As you study this object, notice how many double stars are grouped in this cluster. Many of them would be on a double star observers list were they not part of this beautiful little cluster.
To find M34, simply travel about 5* northwest of Algol.
Here's a beautiful shot of M34 by J.W. Mulchin. This guy does some really nice work. You should checkout his website.
Let's continue with Planetary Nebula M76(mag12.1) This is a beautiful little nebula. It is loaded with loads of subtle details. Also known as The Little Dumbbell M76 is about the same size as M27. Due to its greater distance, though it appears quite a bit smaller. Visible in telescopes as small as about 90mm under dark skies, this object overflows with details as you increase the aperture.
Checkout this beautiful image by Al Kelly.
Let's wrap things up with this weeks Utah Skies Challenge Object, Irregular Galaxy NGC1275(mag11.6) Irregular Galaxy NGC1275 and neighbors This galaxy is located near the center of the Perseus Galaxy Cluster -- a group of some 530 members. Depending on the size of your telescope and the quality of your skies, you'll see many, many galaxies clumped together in this region
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.
Ecological Consequences of Artificial Night Lighting
Big news: A groundbreaking book on the impact of artificial night
lighting. It's entitled, "Ecological
Consequences of Artificial Night Lighting"... and is due to be released
sometime in November. Published by
Island
Press, this book is sure to shed some light (pun intended) on the very
important, if somewhat mis-understood, topic of
light pollution.
While certain ecological problems associated with artificial night lighting are
widely known-for instance, the disorientation of
sea turtle hatchlings by beachfront lighting-the vast range of influences on
all types of animals and plants is only beginning to be recognized. From nest
choice and breeding success of birds to behavioral and physiological changes in
salamanders, many organisms are seriously affected by human alterations in
natural patterns of light and dark.
Ecological Consequences of Artificial Night Lighting is the first book to
consider the environmental effects of the intentional illumination of the night.
It brings together leading scientists from around the world to review the state
of knowledge on the subject and to describe specific effects that have been
observed across a full range of taxonomic groups, including mammals, birds,
reptiles and amphibians, fishes, invertebrates, and plants.
Ecological Consequences of Artificial Night Lighting provides a scientific basis
to begin addressing the challenge of conserving the nighttime environment. It
cogently demonstrates the vital importance of this until-now neglected topic and
is an essential new work for conservation planners, researchers, and anyone
concerned with human impacts on the natural world.
Starry Night Lights
This weeks Light Pollution Update is brought to you by the folks at Starry Night Lights... The First & Only Night Sky Friendly Outdoor Lighting Store. Checkout their wide selection of ordinance compliant, night sky friendlyoutdoor lighting products such as this
Dark Sky Friendly Outdoor Light called The GlareBuster.
Here's the latest addition to Starry Night
Lights growing collection of night sky friendly
outdoor lights.
Manufactured by
the Minka
Group, the
MIN-8281-61 is an elegant fixture that's as good looking as it is
night sky friendly. The designers over at Minka sure did their
homework... mounting the bulb up inside the metallic housing to prevent
light from shining up into the night sky... or across property lines.
Available as a wall mount or a post top fixture, this beauty will
enhance any night time lighting scheme.
As you'd expect, you can find
this gorgeous, dark sky friendly outdoor light at your favorite outdoor lighting retailer, Starry Night Lights!
Stay up to date on astronomical happenings by regularly checking the Utah Skies website at http://www.UtahSkies.org