Tag: astronomy

The Sky for 2014

What is happening in the sky this year?

There are no exceptional sky events expected in 2014. A pair of good lunar eclipses, a decent Mars opposition, the usual meteor showers, and no bright comets predicted. There is one odd meteor shower that might provide some fireworks in May mentioned below. Otherwise there is always the possibility of a new discovery, a nova or supernova, or a new comet. For now this looks to be a routine year for sky watchers.

Mars during the 2005 opposition
Mars during the 2005 opposition

Planets

Venus is as always a fun planet to follow through the year. The brilliant morning or evening star is always notable when it passes other bright objects such as the Moon or Jupiter. In April and May Venus will pass both ice giants, Uranus and Neptune with under a degree of separation. In August it will be Jupiter, passing about 35′ away on August 14th. The approach will be even closer if you are able to observe the pair during daylight hours, closing to 12′ at 08:06HST on the 14th.

Mars will pass through opposition on April 8th this year. This is a relatively good viewing opportunity with the red planet appearing just over 15″ in size. Close approach will be a week later, on April 14th. On September 27th Mars will pass about 3° from Antares.

Jupiter and Saturn continue to be well separated in the sky. This results in one or the other being available for observation much of the year. We start with Jupiter in the evening sky until early July. Saturn is currently in the early morning sky, passing through opposition May 10th and available for observation in the evening sky for the latter half of the year.

Minor Planets

The minor planets Ceres and Vesta are quite close all year. So close they will experience opposition in the same week. The dance will take place with the constellation Virgo as the backdrop. 4 Vesta will pass through opposition on April 13th, only two days later 1 Ceres will do the same on the 15th. At the same time the planet Mars will be just a few degrees south of the pair, going through opposition on April 8th. I wonder if the astrologers have noticed this? If so I am sure they will attach some ridiculous speculations to the event. They do not usually pay attention to the minor planets.

Lunar Eclipse 28Aug2007
Total lunar eclipse, photo is a 8sec exposure with a Canon 20Da on a 90mm f/12 APO

Eclipses

There are two solar eclipses and two lunar eclipses for 2014. An odd annular solar eclipse will be visible from Antarctica and Australia on April 29th. A deep partial solar eclipse will be visible across much of western North America on October 23rd. Neither will be visible from the islands.

The two lunar eclipses are more interesting. Both total eclipses will feature good magnitudes and the eclipses will both be visible in their entirety from Hawai’i. Better yet, the first eclipse will begin soon after sunset, providing an excellent viewing opportunity for outreach. Occurring on April 14th and October 7th, these will be the highlight of the year for eclipse aficionados.

Meteor Showers

2014 offers an interesting year for meteor watchers. Of the three most reliable showers it is the Quadrantids that will be seen to best effect in 2014, untroubled by moonlight. The Geminids will be partly obscured, while the Perseids will peak quite close to full Moon.

In addition to the traditional showers there are predictions for a new shower associated with Comet 209P LINEAR. In late May this debris stream may produce a strong, or even storm level meteor shower. Watch here for more information on this possible event.

Comets

While no spectacular comets are predicted for 2014 there are several decent comets available for telescopic observing or photography. Late summer and into early autumn look for comet C/2012 K1 PanSTARRS to peak around magnitude 6.

As usual you should keep tuned to Darker View for timely reminders of upcoming celestial events. Over a hundred posts are already entered and waiting for the appropriate date to pop up here, reminding you and I to keep looking up.

Oregon Star Party 2013

The plan is simple, a vacation combining a visit to my family and a run to Oregon Star Party. I miss doing the larger regional star parties, six telescopes is a big star party on the island. OSP would feature hundreds of telescopes, speakers, and hopefully dark skies. I also volunteered as a speaker, may as well bring and share little Keck experience.

Andrew and the Galaxy
The author taking astrophotos under the Milky Way Galaxy
Heading to a major star party takes some planning. Worse, I would be doing this with what could be packed for airline travel. The answer would be to implement my usual star party plan… Set up for astrophotography, this would allow vising other telescopes while my camera ran under computer control. Good astrophotography can also be done with relatively small equipment.

The site is quite remote, no nearby hardware store to replace a missing bolt, no internet connection to allow download of a missing driver. The setup would have to work with what was packed to start with. Several iterations of packing showed that two cases would be required to carry the setup. An ancient hard suitcase I have had since my Air Force days, and a hard equipment case purchased years ago for a portable telescope I have yet to build. At least both had wheels and could be hauled by one person through an airport terminal.

After a few very nice days visiting with my parents I steal away in the camper for the drive to OSP. Four hours sees me over the Cascades, into the Ochoco Mountains east of Prineville. It is a very pleasant drive, a beautiful day, open roads, Mt. Hood soaring over the trees that line the highway. The sort of driving you just can not do on the island, the sort of vacation I grew up with.

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Looking Forward to the Thirty Meter Telescope

While science observations may be almost a decade away, the science possibilities of the Thirty Meter Telescope are already eagerly anticipated by astronomers. In the attempt to answer many of the basic questions of our universe, the limitations of the existing telescopes have become apparent. The eight and ten meter telescopes that represent the forefront of astronomy today are reaching their limit, a limit the research astronomy community is ready to step past.

TMT Rendering
An overhead view of the proposed Thirty Meter Telescope, credit TMT Observatory Corporation
Taking place this week is the Thirty Meter Telescope Science Forum. Over 140 astronomers and engineers representing all of the partner countries meeting in Waikoloa to discuss new science that will be made possible by the TMT.

One thing was clear from the science presentations… The science case for the TMT is compelling. The sheer size of the new telescope will allow observation of the early universe that is just out of reach of the current generation of large telescopes. The thirty meter primary mirror will provide significant advantages even over the next generation of space telescopes in resolution and flexibility of operation. The excellent site available on Mauna Kea allows advantages over the selected site for the European E-ELT in Chile.

While the goal of the conference is to look ahead. It is interesting that what is being presented is a wonderful summary of where current research stands today. In the effort to detail what research could be accomplish with TMT, the astronomers succinctly cataloged the state of current research as it is limited by today’s instruments and telescopes.

Much of the first day discussion was focused on the possibilities of observing the very early universe, the first stars and galaxies that formed in the era just after the big bang. Current telescopes can observe a few tantalizing glimpses of this era, just enough to show astronomers what they do not know about the formation of our universe. A few massive galaxies bright enough to be seen across the gulf of time, a few fainter galaxies that are luckily aligned with closer massive galaxy clusters. Clusters that form gravitational lenses that allow us to peer through a keyhole into the dim past. Astronomer have used every trick they can muster to allow observation of this first era. The TMT will open the door into this first era of stars, allow real study of the beginning of what we see around us today.

Planning for the TMT is in the final stages, where the capabilities of the telescope and the instruments can be forecast with reasonable assurance that those goals will be met. Astronomers can use the design data of the telescope to simulate exposures and signal to noise ratios of the data, on targets they can just barely see today. This sort of planning is critical to the astronomy community, it may be another ten years before science observations begin, but when they do the astronomers will be ready to use the telescope to its fullest capability.

This sort of feedback is critical to the engineers as well. As instruments pass through final development, it is important to know what capabilities are most valuable, what to prioritize when the final design is produced. Questions of spectral resolutions, throughput and exposure times are often heard in the discussions.

Through conferences like this one, the astronomy community will know what to expect when the new telescope comes online around 2022. They will be ready to push forward our understanding of the universe. We know what to expect. But, as Andrea Ghez reminded us, we must “Expect the unexpected!”. Many of the discoveries made by Keck and the other great telescopes of the current generation were completely unexpected. It is likely that the universe still has a few surprises for us.

The Portents of ISON

Comets have long been regarded as omens of extraordinary portent. Novae, eclipses, conjunctions, anything seen in the sky can serve in this role, but bright comets have always held a special awe.

C/2007N3 Lulin
Comet C/2007 N3 Lulin on the morning of 22 Feb 2009
Even today those who seek signs are quick to seize upon any unusual astronomical event. A few months ago it was meteors, events over Chelyabinsk grabbing the attention. With ISON entering the inner solar system the attention shifts.

Bright comets are invariably seen as omens by some. History is littered with stories of comets and prophesies. This has not changed, there are many recent examples… Hale-Bopp, Hyakutake, Elenin, each has been used to make all manner of wild predictions. Comet C/2012 S1 ISON certainly fits the role. It will most likely be quite bright, easily visible without optical aid. It may even be visible in the daytime.

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Space and Astronomy at the Kona Library

Planets, Stars, and How to Live on a Space Station

May 23rd Astronomy Program
Kailua Kona Library
3:30 PM to 4:30 PM

Allan Honey, a program engineer at Keck Observatory, will talk about the different distances in space between stars and planets. Allan’s son, Ben Honey, a flight controller for the International Space Station at the Johnson Space Center in Houston, will explain what happens when astronauts live and work in space. Allan Honey has worked at the Keck Observatory for more than 26 years, and Ben Honey grew up on the Big Island before leaving to study at Embry-Riddle Aeronautical University

Creationist Astronomy

Astronomy is a science where human timescales become insignificant. It seems like everything we are watching takes millions or even billions of years to occur. To be sure, there are a few things that happen quickly, like supernovae, but those events are the exceptions. Everywhere we look we see the stately dance of stars and galaxies, the formation of worlds. The dance is spread across distances and times so vast that even those who study the universe have difficulty comprehending the sheer immensity involved. Stars and planets take hundreds of thousands of years to form, a galaxy collision may go on for millions of years.

M6 The Butterfly Cluster
M6, the Butterfly Cluster
And yet there is a significant portion of our fellow citizens who insist that the universe is only a few thousand years old. I encounter this belief all too often, a dogged insistence that everything was created just a few thousand years ago. There are variations on the theme, with differing numbers, but these beliefs generally accept that our universe and the Earth were formed within the last ten thousand years. Never mind we have literally mountains of evidence to the contrary, when that evidence clashes with worldviews instilled since birth by a religion and parents, a discouraging number of people ignore reality and cling to what they were taught. To admit otherwise would open up too many other dearly held beliefs to questioning, a truly uncomfortable challenge.

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Astronomy and Mauna Kea

A nice opinion piece by Chad Kalepa Baybayan in the local paper yesterday. He addresses the use of the summit of Mauna Kea for astronomy. There are some in the local community that object to the telescopes. While those very vocal opponents often grab the attention, they are by no means representative of the whole community. It is more complex than that, there are those in the Hawaiian community that support astronomy, and those opposed, and probably quite a few who are somewhere between those two positions.

Using the resources on Mauna Kea as a tool to serve and benefit the community through astronomy is consistent with the example of the adze quarry. To value astronomy and its work on Mauna Kea, you have to value the importance of “Ike,” knowledge, and its quest for a greater understanding of the universe we live in. – Chad Kalepa Baybayan, West Hawaii Today, April 19th, 2013

Give it a read!

A Brief Guide to Public Observing

Presenting the wonders of the night sky to the general public can be a rewarding experience. The smile on a child’s eyes they first time the see the rings of Saturn or the craters of The Moon is a truly a wonderful thing.

Princess at the Telescope
A Halloween princess watching moonrise through the telescope
Public observing can also be a daunting challenge to the inexperienced public presenter. A little preparation and thought can prevent a lot of trouble and make it a better experience for both the presenter and the public.

I am attempting to put down a few of the things I have learned in over a decade of hauling a telescope around. In that time I have used countless schoolyards as observatories, set my gear up at posh resorts, on the tee line of a driving range, outside the front door of Wal-Mart, across the fence from cows at a dude ranch, parking lots, city sidewalks and grassy lawns, under conditions both perfect and absolutely lousy for doing astronomy. Dealt with everything from drunks to two year olds, and I still do this regularly… It is worth every young smile!

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Looking Ahead to a Starry 2013

I am a bit behind in entry of all the significant astronomical events for 2013. Never fear! Everything important has been entered for January, so I am still ahead of the posting schedule! A few more evenings of blogging and I will have the whole year done.

Comet C/2011 W3 Lovejoy
Comet C/2011 W3 Lovejoy photographed by space station commander Dan Burbank
The year promises to be a great one for astronomy. While the highlight of 2012 was the Transit of Venus, for 2013 it will be comets! We have two comets of interest coming into the inner solar system. The first will show up in mid-spring, comet C/2011 L4 PanSTARRS will most likely be a naked eye object in the spring, with a predicted peak of 0 magnitude around March.

While C/2011 L4 PanSTARRS is a good comet, comet C/2012 S1 ISON is likely to be a great comet. This comet will pass incredibly close to the Sun and reasonably close to the Earth. If we get lucky, and luck is a significant factor with comets, this could be the comet of a lifetime. Predictions for this comet indicate a possible magnitude well into the negative numbers during November and December. These sort of numbers indicate the comet may be visible in the daytime, and spectacular after sunset. Unlike comet C2006 P1 McNaught in early 2007, this comet will favor viewers in the northern hemisphere!

e Moon, Venus and Aldebaran
The Moon, Venus and Aldebaran join up for an evening conjunction
There is a great conjunction of Mercury, Venus and Jupiter to take place just above the sunset in May and June. Take the three brightest planets and put them within a few degrees of each other, sometimes closer as the dance progresses. It should be a very photogenic event with the backdrop of sunset color.

No great eclipses this year. There are no total lunar eclipses to be seen anywhere, just a partial and two minor penumbrals. An annular solar eclipse visible in the South Pacific that will be visible as a modest partial solar eclipse here in Hawai’i. A hybrid solar eclipse will be visible across the Atlantic and central Africa.

Meteor showers are a mixed situation for the year, some good news, some bad. We will be able to observe the Persieds in a dark sky after the setting of a waxing crescent Moon. The Leonids will occur during full Moon, but are not predicted to be great this year. The Geminids also occur during a full Moon, damping this reliable shower.

2013 will be a great year for watching the sky. Stay tuned to Darker View for alerts on any significant event occurring overhead.