Showing posts with label SFAA. Show all posts
Showing posts with label SFAA. Show all posts

22 September 2015

Total Lunar Eclipse of September 27, 2015 - in San Francisco!

Sunday September 27 we experience a total lunar eclipse visible from North America and of course here in San Francisco. This eclipse features the Moon passing nearly through the center of Earth's shadow, meaning that the Moon will remain in eclipse for over an hour and should be fairly dark, at least on one side. And from San Francisco we will see the unique situation of a Moonrise that is of a nearly fully eclipsed Moon, an unusual sight.

Total Lunar Eclipse - geometry
The eclipse takes several hours to occur, from first touch of the Earth's penumbral shadow to last contact, but the main part of the eclipse is the most exciting part, that of 'Totality' when the Moon's surface is fully darkened by the shadow of the Earth. From the west coast, totality starts at 7:13 pm and ends at 8:22 pm. Given that the Sun sets at 7:01 pm, the local conditions should lead to a very interesting Moonrise (just moments after the sunset) with nearly all of the Moon eclipsed.

The San Francisco Amateur Astronomers (SFAA) will be set up at Pier 15 along San Francisco's Embarcadero (just next to the Exploratorium) for public viewing, as the rising Moon should make a lovely picture just above Treasure Island and the San Francisco Bay. We will be there from 6:30 until 8:30 pm.

Here are several excellent resources on the eclipse:

EarthSky: http://earthsky.org/?p=51212

Wikipedia: https://en.wikipedia.org/wiki/September_2015_lunar_eclipse

NASA: http://eclipse.gsfc.nasa.gov/lunar.html 

03 April 2014

Get Involved: Star Parties on Mt. Tam and the Ritz Carlton

It's spring and time to get back out and about with public events, known as Star Parties. First, the monthly lecture and star party on Mt. Tam opens for the season this Saturday April 5th. Mt. Tam is a great spot high above the lights of San Francisco where the San Francisco Amateur Astronomers (SFAA) and the Friends of Mt. Tam collaborate with the State Park System to create an unforgettable evening of science combining lectures, star tours and telescope viewing. The events take place approximately every four weeks through October, so dress warmly and come out for a fun evening.

Ritz Carlton deck
Last year I tried out an experiment doing star parties at the Ritz Carlton in Half Moon Bay and it went well, so I am back this spring conducting star parties and telescope viewing at this magnificent hotel on the coast. Come out for an elegant evening in the hotel and outstanding views of the night sky on the deck. I'll be there twice in April (4th and 25th), and twice in May (2nd and 16th). Hope to see you there.

09 April 2013

Get Involved: Star Parties at Mt. Tam

Mountain Theater Lecture
It's spring, and that means it's time for star parties at the Mountain Theater on Mt. Tamalpais in Marin County. Always a favorite place for stargazing, I am looking forward to being a part of the magical Saturday nights with lectures, star gazing and amateur astronomer telescopes each month.

The Friends of Mt. Tam (formerly the Mt. Tam Interpretive Association) have been sponsoring astronomy nights on Mt. Tam for 25 years, and this year will be another excellent one with monthly lectures from professional astronomers on topics such as Dark Energy, Asteroids, Mars Exploration and Climate Change. Following each lecture, I give a short tour of the night sky, and the San Francisco Amateur Astronomers host a star party with powerful telescopes to peer into the dark sky visible high above the fog on Mt. Tam.

The nights on Mt. Tam are a terrific astronomy experience and the price is free, so there's no excuse for not taking part. Families are welcome, and guests bring food and drink as well as cushions and warm blankets to really enjoy the evening there. The first event kicks off this Saturday April 13th at 8:30 pm, featuring Dr. Robert A. Rhode of the Berkeley Earth Surface Temperature. His lecture is entitled “Understanding the Climate Change of the Last 250 Years”. Click here for details.

I hope to see you Above the Fog on Mt. Tam sometime this season.

Image courtesy of Weekend Sherpa.

07 February 2013

Get Involved: Star Parties/Learn to Use a Telescope

Every month there are numerous opportunities to get involved with the fun and science of astronomy. The NASA Night Sky Network is a good place to start if you want to find a local event, and in this post I'll provide some local suggestions if you live in the San Francisco Bay Area.

Star Party
I love presenting the sky at star parties and giving talks about astronomy, so I signed up to do this for the Marin County "One Book One Marin" celebration happening this year. Check the calendar for dates, and join me at different libraries in Marin for an introductory lecture on the Solar System and constellations, and star gazing (if weather permits). The first two events are on February 11th and 12th. The San Francisco Amateur Astronomers will also host star parties on different nights in February and March.

The San Francisco Amateur Astronomers (SFAA) club has an open monthly meeting, where anyone may attend to hear very topical lectures on a variety of subjects related to astronomy and space research. The upcoming lecture and calendar are found on the website. And on Saturday February 16th the SFAA is hosting a Star Party and New Scope Forum where you can dust off and bring out your old telescope for a primer on how to use it, and then a chance to put it to work looking into the heavens.

The Peninsula Astronomical Society and the always-excellent Dr. Andrew Fraknoi put on star parties and outstanding lectures in Los Altos Hills. And the wonderful Chabot Space & Science Center has very fine telescope nights featuring their giant telescopes on Friday and Saturday nights year-round.

Get involved! You won't be sorry.

17 July 2012

Get Involved: Star Parties and Astronomy Lectures

Wherever you live, there are always good astronomy events happening in your town. The Night Sky Network is the first resource you should check for the latest events anywhere in the world.

Every weekend, the observatories and science museums in the San Francisco Bay Area open up for public viewing, such as the Chabot Space and Science Center and Foothill College Observatory.

Lecture: In the San Francisco area, I always encourage people to visit the monthly meetings of my astronomy club, the San Francisco Amateur Astronomers (SFAA). Every month we have some of the best astronomy speakers present their latest ideas, and this month is no exception, with a science history talk presented by John Dillon entitle "Galileo Reconsidered" on Wednesday July 18th. Click here for more details.

Lecture & Star Party: Once a month at the top of Mt. Tamalpais in Marin County, high above the thick fog of a San Francisco summer's night, you can find a wonderful Saturday night event featuring a lecture in the Mountain Theater, and stargazing with the SFAA afterwards. This Saturday, July 21st, features Dr. David J. Des Marais from the NASA-Ames Research Center. The tile of his talk is “Astrobiology Investigates Life in the Context of Space.” Click here for more details.

I hope you can join us for an upcoming event.

02 June 2012

Transit of Venus on June 5

It's showtime! 8 years ago, the planet Venus passed in front of the Sun, and now it's time for the second of the pair of transits before a 105-year break. The view from San Francisco and the west coast of the US will be very fine, with the event visible in the western sky starting around 3:00 pm until sunset.


Much is being written about this transit. It fits into the category of 'unique and rare astronomical events' that are special and worthwhile to see if only for the rarity of the event. Venus makes two transits of the Sun every 100+ years, and the last one of this pair (8 years ago) was not visible in San Francisco, so Tuesday June 5th is a special opportunity to see this event. The website transitofvenus.org is an outstanding resource, as is Sky & Telescope with their historical writeup of past transits. Safe viewing tips can be found here on EarthSky.

I am going to take part at an event co-sponsored by the San Francisco Amateur Astronomers and NASA Ames in Mountain View. And there are many more places to see the transit with amateur and professional astronomers around the San Francisco Bay Area - thanks to this list from the AANC. However, if you don't get out to an event, no need to worry. You won't need a telescope to see this, just eye protection as you would use during any solar viewing, and you will easily spot the disk of Venus moving slowly across the Sun's surface. Make the effort; the next chance will be in 2117.

Image courtesy of Wikipedia.

22 May 2012

Report from Mt. Shasta: Ring of Fire Annular Eclipse

I led a Road Trip to Mt. Shasta for viewing of last Sunday's Ring of Fire Annular Eclipse. The event was well attended and we had a nice array of telescopes and a lot of very enthusiastic participants taking in this special event, each in their own way.

I observed the January 1992 annular eclipse from San Diego, CA, and had a very different experience, finding the eclipse at that time to be interesting but not inspiring. However, Sunday at Mt. Shasta, the Ring of Fire was very inspiring. I enjoyed the view through a number of telescopes, including some Hydrogen-Alpha, and the usual white light filters. I enjoyed the collective shout of excitement as the eclipse reached annularity. And I was pleased to simply have clear skies, with some light high cloud but nothing that disrupted the view of the magical display in the sky.

I'll be posting photos and links of pictures and videos from the event. If you were at Mt. Shasta, send me a link and I'll add it here: 


Video of the actual solar disk from Anju Saksena. Note the sounds of the crowd from 7:00 to 7:30.

Annular Eclipse image (above) taken at Mt. Shasta Resort, courtesy John Belew.

17 April 2012

Get Involved: Mt. Tam Lectures, Globe at Night

Part of the joy of astronomy is to gaze up in the heavens and enjoy the spectacle of looking into the vastness of space. And for many, another part of the joy of astronomy is learning about space science. I like to highlight opportunities in the San Francisco Bay Area for both of these perspectives, and one of my favorite places to both learn about space and also enjoy gazing into the heavens is on Mt. Tamalpais in Marin County, where the public is invited to take part in monthly lectures by leading astronomers, and immediately afterwards, enjoy the heavens through telescopes provided by our local astronomy club, the San Francisco Amateur Astronomers (SFAA). The 2012 season of lectures kicks off this Saturday April 21st with Dr. Alex Filippenko of UC Berkeley, talking about the upcoming Ring of Fire Solar Eclipse in May, and the Transit of Venus in June. I'll be there giving a night sky tour following Dr. Filippenko's lecture, and the weather is cooperating so a good evening is in store. More information here.

The annual dark sky awareness event called Globe At Night comes to a close this week. The public around the world is invited to find one of three bright constellations and estimate how many of the stars in the constellation are visible from your location. By submitting your results online, you contribute to a world-wide database of sighting, helping to build a global map of light pollution and to raise awareness of this issue.

No matter where you are, you can find astronomy events on the Night Sky Network. Check out this great resource and Get Involved today!

18 March 2012

Ring of Fire Roadtrip and the San Francisco Amateur Astronomers

In just two months, the western United States will witness a special astronomical event, a "Ring of Fire" solar eclipse, also called an Annular Solar Eclipse. This particular kind of eclipse is the result of an exact alignment of the Sun, Moon and Earth, but unlike a Total Solar Eclipse in which the sky turns to night and the Sun's corona becomes visible, an Annular Eclipse brings us a different spectacle in which the inner 90% of the Sun is blocked out by the Moon, leaving an eerie "Ring of Fire" in the sky.

The event takes place on Sunday May 20th and although San Francisco and many parts of the western US will see a very deep Partial Solar Eclipse, you will have to travel to Northern California to see the full 'Annular' effect in which the Moon is centered in the disk of the Sun. 

My local astronomy club, the San Francisco Amateur Astronomers, is sponsoring a "Ring of Fire Road Trip" for those who'd like to join the club and view the May 20th eclipse from the Mt. Shasta area, several hours north of San Francisco. If you'd like to learn more about this, check out the newly-redesigned SFAA website and make plans to see this special event. 

By the way, the SFAA conducts monthly lectures, star parties and special events like the Ring of Fire Roadtrip. Check out the website for the latest events, including a lecture this Wednesday March 21 by NASA Astronomer Jeffrey Van Cleve on the topic of Near Earth Objects. Most SFAA events are open to the public and we welcome you to join us for a talk, a road trip, or a night under the stars at one of our upcoming Star Parties in San Francisco or high atop the fog on Mt. Tam, about 45 minutes north of San Francisco.  

I hope to see you at an upcoming event. 

Image courtesy of Wikimedia Commons / Sancho Panza.

05 March 2012

Mars at Opposition

Tonight Mars is at opposition, a once-every-25-month event in which Earth passes between the Sun and Mars, and we observe Mars at its closest approach. The patterns of alignments of the Earth with different planets is a very cyclical event, every year or two depending upon the proximity of Earth to that planet.

The relative distance from Earth to Mars at each opposition is also something that is quite cyclical. You might recall in 2003 claims that the "Mars is going to be as big as the full Moon" during that year's very favorable opposition. In fact, the disk of Mars was never that big, but hype aside, Mars appeared quite large compared to any other time in recent history. In 2012, opposition brings us Mars as a bright orange star in the east shortly after sunset, traveling across our night sky from horizon to horizon. Although it is at the closest until 2014, it is just a small dot of color through most home-based telescopes. You will need considerable power to see the polar ice caps and other surface features (such as in the photograph). My friends in the San Francisco Amateur Astronomers (SFAA) club live for such moments, and if you can visit a local observatory or visit a star party this time of year, I am sure Mars will be one of the highlights.

The next time Mars nears the size of its famous 2003 opposition is in 2018. Until then, enjoy Mars however big or small it looks. It's a fascinating planet.

Photo by Mark Killion.

29 February 2012

Get Involved: Dark Skies

As an Urban Astronomer, I am enthusiastic about astronomy even in the light-polluted urban centers of the world, including my own city of San Francisco. I write this blog for many reasons, one of which is to remind city dwellers that there is still plenty to see in the night sky. Right here in San Francisco, there are ways to view the sky in a dark spot, away from streetlights and brightly-lit areas of the City, and see quite a bit of the night sky. Mainly you just need patience to let your eyes dark adapt your location, and before you know it you can find quite a few stars and constellations.

Over the past weeks, I was traveling in and around Flagstaff, AZ, the World's First International Dark Sky City. Flagstaff is a medium-size city of about 60,000 people, but through smart street lighting, has reduced its light output considerably. While visiting Lowell Observatory on a hill above Flagstaff, you could see the city lights below, but it was not like any other I had seen. Clearly there was light from the city, but it was subdued, not shining up in the sky but rather shining down onto the streets and public spaces. That is Smart Lighting!

There is a global organization called the International Dark-Sky Association that provides advocacy and education to support communities and municipalities around the world to learn about smart lighting and preservation of dark skies. I applaud their efforts and their mission. Locally in San Francisco fellow SFAA member Dave Goggin has organized a list and invites participation in San Francisco discussions about lighting.

What can you do in your community to preserve dark skies? I am sure the Dark Sky Association would welcome your participation. It's a very grass roots thing. Here is an article about an individual in San Clemente starting a movement there. Get inspired!

06 December 2011

Total Lunar Eclipse 2011 - in San Francisco

Saturday morning, we will witness a Total Lunar Eclipse visible from western North America and regions across the Pacific Ocean. In San Francisco, we will have a dramatic early morning spectacle of the fully eclipsed Moon setting on the Pacific just as dawn breaks. As with any total lunar eclipse, the Moon's surface will be completely covered by the dark 'umbral' shadow of the Earth, but it will remain visible, taking on an eerie appearance of rusty red, or deep grey, or a mix of colors. Every eclipse is a little bit different, so we wait in anticipation to see what happens Saturday morning.

The circumstances of this eclipse are outlined in detail in this informative Sky & Telescope article, and this excellent NASA Science News article.

The timeline for San Francisco (and the entire pacific time zone) are: start of eclipse at 4:45 am, start of totality at 6:05 am, and end of totality at 6:57 am. The glow of the dawn sky will emerge in the eastern sky shortly after 6:00 am, so the Moon will be in total eclipse as the sky begins to brighten, and by the time the Moon exits the total phase, the sky will be fully lit in advance of the sunrise at 7:13 am.

What does all this mean to the casual viewer? You will experience the best views and the most drama from 4:45 am until 6:30 am, when the Moon gradually changes from full to completely eclipsed, and the skies are dark enough to appreciate the beauty and subtlety of the lighting and color of the lunar surface. And as the Moon's brightness is attenuated as the Earth's shadow creeps across the surface, the backdrop of stars will begin to shine more brightly by contrast, revealing the wonderful winter sky at its best, with the constellations Taurus, Orion and Auriga around the Moon, and some of the most beautiful, bright stars in the entire night sky punctuating the skyscape.

I welcome the public to stop by Ocean Beach on the west coast of San Francisco for an early-morning star party, where I and others from the San Francisco Amateur Astronomers (SFAA) will have telescopes set up for public viewing. We will set up at the beachwalk just across from the Beach Chalet restaurant on Great Highway, starting around 4:30 am. But heed the advice of Deborah Byrd in this EarthSky article, and wear very warm clothes. You'll be glad you did, as the winter chill is quite intense just before sunrise.

09 October 2011

Get Involved: Star Parties and Astronomy Lectures

There are many ways to get involved with astronomy. No matter where you live, you can find local clubs and events using the Night Sky Network website. Just about anywhere you go, you'll find a friendly astronomy club ready to welcome a new guest or member.

In the San Francisco Bay Area, we have a wealth of resources. As a member of the San Francisco Amateur Astronomers (SFAA), I always recommend the monthly lectures at the Randall Museum in the City, open at no charge to the public (next lecture on October 19th). The California Academy of Sciences has an excellent lecture series, the Benjamin Dean Lecture Series, focused on astronomy topics (next lecture on October 17th). And in the greater bay area, you'll find things happening at The Lawrence Hall of Science in Berkeley, the Chabot Space and Science Center in Oakland, Foothill College (lead by award-winning Professor Andrew Fraknoi) in Los Altos Hills, and more.

I take part in a few specific events. One of my favorite places to show off the night sky is at the weekly NightLife event at the Cal Academy in Golden Gate Park, every Thursday night. When the skies are clear, I can be found on the Living Roof showing off the skies with a trusty laser pointer, alongside Academy staff with telescopes pointing at the Moon, Jupiter, or other objects of interest. It is an excellent place to have fun and learn some new things about the night sky.

On November 5th, I'll be working with Tucker Hiatt of Wonderfest during the Bay Area Science Festival with a star party on Mt. Tamalpais in Marin County. We're calling the event "Nekkid-Eye Nightscape," and it will follow a lecture called The Milky Way as Dark Matter Laboratory. Tucker and I will give an introduction to the night sky, showcasing the best and the brightest objects in the Autumn Sky. After the lectures, the SFAA will be there with wonderful telescopes to show off the night sky up-close and personal.

I hope to see you at an event sometime soon!

16 June 2011

Get Involved: Public Nights at Observatories, Stargazing at the Libraries and Museums

There are many ways to get involved with astronomy, and I want to provide some links to get you going places.

First, some places where I present astronomy. I am a regular at the California Academy of Sciences most Thursdays at their NightLife event. These are for adults-only (sorry, kids, they serve alcoholic beverages), and when the skies are clear, they have astronomers with telescopes trained on stars and planets, and me giving tours of the night sky. Stop by on a Thursday night and enjoy the Cal Academy, and journey up to the Living Roof for a personal tour from me.

I make special presentations for organizations around the Bay Area, this week at the Marina Public Library as part of the IMBIBE series of events being put on by the Friends of the San Francisco Public Library. Come join me Friday night, June 17th, to see our nearest star (with its fascinating Sunspots) up close, and when the skies turn dark, a close up view of other celestial highlights.

Local observatories and science museums hold regular astronomical viewing nearly every weekend. Chabot Space and Science Center has viewing on Friday and Saturday nights through their powerful telescopes. The Peninsula Astronomical Society hosts viewing at the Foothill College Observatory in Los Altos Friday nights. And the Lawrence Hall of Science has viewing on Saturdays. Finally, my own club, the San Francisco Amateur Astronomers, hosts a monthly Star Party at Mt. Tam in Marin, along with a lecture at the Mountain Theater. I often give tours of the night sky at the Mt. Tam star parties.

There's no excuse if you live in the Bay Area. And if you are not in the San Francisco Bay Area, check the Night Sky Network to find a club and activities near you.

08 September 2010

Get Involved: Astronomy Lectures, Star Parties and more

The Bay Area has many great astronomy resources and if you want to expand your knowledge of the universe and have a good time, check out one of these upcoming astronomy-oriented events.

Star Party and Lecture on Mount Tamalpais: The San Francisco Amateur Astronomers (SFAA) hosts monthly lectures and star parties at the Mountain Theater on Mount Tam in Marin County from April through October. Ken Frank is giving a talk this weekend (Saturday 11th September at 8:30 pm) on the Globe At Night project, highlighting the effects of light pollution
worldwide. Details on the Mount Tam website. Following the lecture, the SFAA has telescopes set up for public viewing.

Benjamin Dean Lecture Series at Cal Academy: The California Academy of Sciences in Golden Gate Park in San Francisco hosts excellent programs on many areas of science. The Dean Lectures focus on astronomy and this month (Monday 13th September at 7:30 pm) the talk is on the Search for Extraterrestrial Intelligence (SETI) with Jon Jenkins of the SETI Institute. Tickets and information at the Cal Academy website.

The San Francisco Amateur Astronomers monthly meeting is always open to the public. This month's meeting features NASA Ames astronomer Chris McKay speaking about extreme environments on heavenly bodies in the Solar System. The meeting is on Wednesday 15th September at 7:30 pm at the Randall Museum in San Francisco. More details on the SFAA Website.

I hope to see you at one of these excellent events.

12 March 2010

Get Involved: Chart the Skies, Hear a Lecture, Attend a Star Party

There are many ways to take your interest in astronomy up a notch. Here are a few things that are sure to enhance your interest and knowledge of the skies.

Globe at Night: I am a big fan of this annual project, one that combines astronomy with awareness of light pollution and is also a global participation project. Go outside tonight and look up at Orion, then report what you see at the Globe at Night website. It only will take a few minutes but it will change how you see the sky at night. I am certain about this one.

Lecture: Each month the San Francisco Amateur Astronomers hold their meeting at the Randall Museum in San Francisco. The meetings are open to the public and feature a speaker on a topic of interest in astronomy. This month the meeting takes place on March 17th and features Andrew Pohorille from NASA Ames Research Center for a presentation on "The Origins of Life in the Universe."

California Academy of Sciences Nightlife: Every Thursday the Cal Academy stays open late for a fun, festive evening with music, drinks and science. When the skies are clear you can stargaze and look up close at the universe through telescopes on the Living Roof. And this week, on Thursday March 18, I'll again be a guest at NightLife giving a talk about the Night Sky and laser-guided star tours on the roof. I hope to see you there. (note: must be at least 21 years of age)

Star Parties: The San Francisco Amateur Astronomers host monthly star parties at Lands End in San Francisco, weather permitting. The next on is on Sunday March 21st. And on April 17th the Mount Tamalpais lecture series and star parties return. These are an excellent combination with lectures at the Mountain Theater and star gazing in a dark setting atop Mt. Tam. You won't be disappointed -- even when it is foggy in San Francisco it is generally clear and dark on Mt. Tam.

08 February 2010

Get Involved: Cal Academy, Star Parties, meet John Dobson

February is a busy month here in San Francisco for those who are ready to take a step forward and get involved in a local astronomy event or two. Here's the lineup.

On February 11, the San Francisco Amateur Astronomers (SFAA) team up with the California Academy of Sciences for a new series of astronomy talks and star tours on the Living Roof of the Cal Academy. I'll be giving the talk this Thursday during the NightLife event at 7:15 pm. More information and tickets on the NightLife webpage.

On February 17, the SFAA holds its monthly meeting and lecture at the Randall Museum in San Francisco. And on February 20th they have their City Star Party and Telescope Workshop. You can dust off your old telescope and bring it out for a quick lesson on using your telescope (before the sun sets), and then enjoy stargazing at the City Star Party. This is at Lands End in San Francisco.

On February 25th and 26th, the amateur astronomy community of San Francisco bids farewell to a living legend in the field, John Dobson. John is a co-founder of the San Francisco Sidewalk Astronomers (they call what they do "urban guerilla astronomy") and the creator of the easy-to-build and easy-to-use telescopes that bear his name, Dobsonians. There will be a get together with John on Thursday 25th in the Sunset District of San Francisco, and sidewalk astronomy with John at a location to be determined in the city, to say Farewell as John moves from San Francisco to Los Angeles. I am impressed with Sidewalk Astronomers and especially with John Dobson, who had a singular vision to make telescopes accessible to anyone who wants to build one out of inexpensive parts, and to get these telescopes out on the street so everyone can appreciate the wonders of the sky and see something they hadn't seen before. I respect that.

I hope to see you at one of these events.

07 December 2009

Astronomy Gifts for the Holidays / Telescope Shopping

If you are considering a gift for someone who enjoys astronomy (or want to share something with a young person who might like to discover astronomy), I present to you my astronomy gift guide for the holidays.

A. Astronomy Gifts.

At my local astronomy shop here in San Francisco, Scope City, I asked manager Sam and salesperson Steve what they would recommend for the holidays. Telescopes are plentiful and that warrants a separate section of this blog post - see below. But aside from telescopes, there are binoculars of all types, excellent books, tools such as Star Finders and Planispheres, and new this year, the Sky Scout, a hot selling item from Celestron that has the astronomy hobbyist world abuzz. Point the Sky Scout at an object in the sky and it tells you what the object is and provides additional details. For another approach, you can open a door for astronomy for someone with a gift subscription to Astronomy Magazine or Sky & Telescope Magazine.


B: Telescopes - Top 5 Things to Consider When Buying a Telescope

A telescope is a powerful scientific instrument which, when well cared for, can provide years of viewing pleasure. Top brands include Meade, Orion and Celestron. However, there is a very wide range of options, quality and performance to choose from so before you buy a telescope learn a few things about them. Telescopes.com offers some useful background information, as does Astronomics.com with its informative pages. The Bad Astronomy blog has a helpful article, and this post provides a lot of detail for the telescope shopper. If you summarize all of the articles and if I draw from my own experience, I would recommend five things to think about when purchasing a telescope.

1. Consider Binoculars. They are easy to use, can be used at daytime as well as nighttime, cost less than a telescope, and are a good first test of one's interest in the night sky.

2. Buy quality. Avoid the cheap telescopes at the department stores. They not only have generally poor quality optics, but end up being a turn-off for those who purchase them. It's worth the extra money to get something you will enjoy.

3. Start simple. As much as the high-tech telescopes look like fun, they are still complex instruments that will need some degree of care-and-feeding when you use them. The most basic scopes, simple refractors on a lightweight tripod, take little time to set up and are the most simple to use. Also, a simple telescope is not as bulky and heavy to carry around. For kids, try out the Celestron FirstScope (see below).

4. Be comfortable. You really need to feel at ease with a telescope, so in the best case go to your local astronomy shop and try out a few. Scope City will let you take their binoculars and telescopes out in front of the store and do the "Safeway Test" to see how well you can resolve items in the aisles of Safeway grocery store next door.

5. Learn to use your telescope at your local astronomy club. Amateur astronomers like to help others to learn about astronomy. The San Francisco Amateur Astronomers and San Francisco Sidewalk Astronomers hold Telescope Clinics at their monthly star parties. These are excellent venues to bring your scope and learn to use it with astronomy enthusiasts. Check the Night Sky Network for a club near you.

C: For Young People.

Kids can benefit from astronomy gifts that are easy to use and make it simple to immediately start enjoying. I found numerous websites that showcase books for kids. Skymaps.com has a very well organized list of books for different age ranges, all the way from age 4 to young adult and educator. The Top 10 Astronomy Books for Kids on about.com offers some good choices. On the telescope front in 2009, Celestron premiered the FirstScope, an extremely simple telescope for kids that, from the reviews I've read, is surprisingly good quality yet very low price (about $50 at most outlets). It is an 'official product' of the International Year of Astronomy (IYA) celebration. But in the end I was most enamored with this simple recommendation from the Suite101.com blog:

"What children really need, more than 'stuff,' is for someone to take the time to stand outside with them on a starry night and point out planets and constellations. Teach them the sky. You can give coupons good for '1 Hour of Observing with Mom' or something similar."


Happy Holidays. Stay warm and enjoy the long dark nights.

02 December 2009

Get Involved: Astronomy Lectures, Star Parties and Telescope Workshops

There are many ways to get involved with astronomy here in San Francisco, or wherever you may be. A great resource for finding events in your neighborhood is the Night Sky Network, a resource chock-full of information from astronomy clubs across the United States. Just enter your location and you can find out what is happening in your area.

Here in San Francisco, the California Academy of Sciences has an astronomy lecture series called the Benjamin Dean Lecture Series. The next lecture in the series will be on Monday December 7th. The topic is Saturn, presented by Dr. Carolyn Porco, the director of the imaging team for the Cassini spacecraft that is orbiting Saturn. You can get tickets for the December 7th Dean Lecture online.

The San Francisco Amateur Astronomers (SFAA) have their monthly meeting at the Randall Museum on December 17th and their "City Star Party" on December 26th at Land's End in San Francisco. The City Star Party on the 26th (weather permitting) will be a great chance to bring out new holiday gifts such as telescopes and binoculars and learn to use them alongside amateur astronomers. The SFAA and the San Francisco Sidewalk Astronomers have free telescope workshops before each City Star Party but please RSVP to them at clinic@sfsidewalkastronomers.org if you plan to come on December 26th.

I hope to see you at an upcoming event!

24 August 2009

The Milky Way and the Galactic Center

At the SFAA star party a couple nights ago on Mt Tam, the conditions were very clear and dark and we had a nice view of the Milky Way. With an excellent southern horizon, we could see all of Scorpius and Sagittarius and as my daughter and I were giving star tours to guests at the star party, I was happy to point out these two constellations and note that the center of the Milky Way was in the vicinity of the tail of Scorpius and the "teapot" of Sagittarius. This is called the "Galactic Center" and is the central bulge of the Milky Way Galaxy.

Looking toward the galactic center, however, you don't see a huge ball of light. That is because there is a massive dust cloud that lies between the Sun and the galactic center. Too bad for us, because it would be quite amazing to see the center of our own galaxy. Nonetheless, there is much richness in the sky near the galactic center and even in city lights you can begin to see some of that beauty if you use a pair of binoculars. Standard 7x35 or 10x50 binoculars can substantially increase the amount of light you can see, and that means you can begin to discern the stars and shapes of deep space objects such as the Lagoon Nebula or the Swan Nebula. Take out binoculars and point yourself south and see if you can start to see some of the wonders that are at the heart of the Milky Way.