06 January 2013

Look Back at 2012

We're at the start of another cycle around the sun, and this is a good point in time (and space) to look back over the past cycle to see what's been going on with the San Jose Astronomical Association.

The Quick STARt program (the former Mentoring Program) helps to ease folks into amateur astronomy. You have to admit, astronomy can look exciting from the outside, but once you scratch the surface, it can get seemingly complex in a hurry. But it doesn't have to be that way if there's someone to guide you and answer all your seemingly basic questions.  The Quick STARt program really took off in 2012 with the leadership and energy of Dave Ittner.  He has already helped dozens and dozens of people get their feet wet in getting out under dark skies to discover what's out there, firsthand.  Over the year, Dave has also refined the program, adding not only easy to use Dobsonian telescopes but all the accessories any good observer needs, such as observing chairs, appropriate eyepieces, sky atlases, accessory cases, etc.  The Quick STARt program is available to SJAA members, and you can find more information, including how to contact Dave to sign up, here.

Another program that was conceived just before 2012 but has really taken off is the Solar Observing program. Early in 2012 the club took receipt of a Lunt h-alpha 100mm solar telescope.  Since then, it's been the star (!) of the party at every daytime event.  The core of the Solar Observing program is the monthly observing sessions at San Jose's Houge Park.  On the first Sunday of every month, from 2 to 4PM PT, SJAA members set up the club's Lunt for the public to come view our nearest star. Additionally, members bring their own solar telescopes, such as Coronado PSTs to projection systems, with which to compare views. Of course, sometimes the weather doesn't cooperate and the session is canceled, but in those oftentimes when we do set up, the sun provides an amazing show. In fact, the sun is approaching the solar maximum, which means lots to see on and near the sun.  Michael Packer runs the Solar Observing program and has proven a dedicated sun watcher!  (Remember: NEVER observe the sun without proper eye protection! You can go blind!)

A program that is entirely new for 2012 was the Fix It session, sometimes called the Tune Up or the Telescope Fix It program.  This is a real simple service the SJAA offers to members of the community, though it's priceless.  The Fix It session provides a place for people to come with their telescope or other astronomy gear problems.  Every first Sunday of the month, from 2 to 4PM (coinciding with the Solar Observing sessions), several SJAA members make themselves available at Houge Park for people to come with their scopes to get help with their gear. It can be any type of issue, such as broken scopes whose owners need advice, help with collimation, or even a quick session on how to use it. Weather doesn't slow this program down, so even if it's windy, cold and rainy outside, Fix It day goes on.  Big thanks to go Ed Wong and Phil Chambers for being the gear experts who faithfully make themselves available at Fix It day!

Another new program that debuted in 2012 is the Astro Imaging Special Interest Group (SIG).  This was spearheaded by Harsh Kaushikkar and has a mission of bringing together people who have an interest in astronomy imaging, or put more simply, taking pictures of the night sky.  The Imaging SIG meets roughly every other month at Houge Park to discuss topics about imaging, as well as in the field, usually at Rancho Cañada del Oro (more on that site later). The SIG is open to people with absolutely no experience but want to learn what it's all about, but experienced imagers are also more than welcome, indeed, encouraged to participate.  The best way to get involved is to review the postings on the SJAA AstroImaging mail list in Google Groups. Here's the link.

The SJAA has been working with the Santa Clara County Open Space Authority (sometimes called simply the OSA) to make one of their sites available to astronomers.  The OSA's Rancho Cañada del Oro (sometimes called RCDO, or Rancho) site is made available more and more with the dedicated work of SJAA members Chris Kelly and Dave Ittner. Both are also docents with the OSA, which really makes the partnership between the two organizations that much more cohesive.  If you are interested in experiencing a fairly dark site that's not too far from home, consider coming out to Rancho when it's announced it will be open. Located just south of Calero County Park, between San Jose and Morgan Hill, Rancho gets surprisingly dark for being so close to an urban area.  Keep an eye out on the SJAA Announce mail list for notifications of when it will be available.

There were many more accomplishments during the year for the SJAA, and this post could go on and on about them. But before we get too long winded, let me make a few, more brief acknowledgments.
  • Teruo Itsumi developed and hosted the first Messier Half Marathon at Henry Coe State Park in October
  • SJAA members gathered to view the Venus Transit, the annular eclipse, and the last shuttle flyby.
  • The SJAA again participated in two community events, the Cambrian Festival and the Almaden Art and Wine Festival.
  • The City of San Jose provided a grant of $500 to the SJAA to help offset the cost of insurance for the school star party program.
  • Jim Van Nuland continues to be the heart and soul of the school star party program.
  • The telescope loaner program was revamped, with its inventory cleaned up. And the auction was a success, in which the club divested itself of many older scopes from the loaner program bringing in some much needed funds to help with the revamp of the loaner program.
  • The general meetings now have a social time beforehand, allowing members to mingle.
  • The SJAA produced a video of one of the monthly talks, which was broadcast on cable TV.
  • The website was overhauled, and looking great.
  • The club newsletter continues to be consistently produced every month, in large part due to Paul Kohlmiller's effort, and the montly column my Akkana Peck.
  • And membership has increased by 10%!

There is more, indeed, but these many items are the highlights. The board and the active volunteers have plans to make 2013 just as active, lively and fun. I hope that if you haven't been getting involved, you will consider doing it soon!  Come to Houge Park, or contact any of the board members to participate!

Happy New Orbit!
Rob Jaworski

02 January 2013

Items for sale

SJAA has accumulated a lot of scopes and accessories over the years.   We now have too many items and too little room so it's time to offer them up for sale.

I found it best to break them out into one of three categories - Telescopes, Eyepieces, or Misc Items and put them on their own separate page here on this blog. The links to these pages can be found to the right of this post.

These items are offered up as is and on a first come first serve basis.  Should an item not yet be priced it will be shown as $TBD.   Feel free to offer a price for us to review and then either accept or counter.

I would be glad to answer any questions you have and or show you the item of interest by setting up a time to meet at Houge Park.

Please check back periodically as we have many more items to list (will be added to the bottom of each post).

Regards,

Dave Ittner

25 December 2012

Season's Greetings!

Season's Greetings!

NGC 7662 (also known as the Blue Snowball Nebula, Snowball Nebula or Caldwell 22) is a planetary nebula located in the constellation Andromeda.
The distance to this nebula is not known with any real accuracy. According to the Skalnate Pleso Catalogue (1951) the distance of NGC 7662 is about 1,800 light years, the actual diameter about 20,000 AU. In a more recent survey of the brighter planetaries, C.R.O'Dell (1963) derived a distance of 1,740 parsecs or about 5,600 light years, increasing the actual size to 0.8 light year, or nearly 50,000 AU. It has a faint central star that is variable, with a magnitude range of 12 to 16.[4] The central star is a bluish dwarf with a continuous spectrum and a computed temperature of about 75,000K. The nuclei of the planetary nebulae are among the hottest stars known.[5]
NGC 7662 is a popular planetary nebula for casual observers. A small telescope will reveal a star-like object with slight nebulosity. A 6" telescope with a magnification around 100x will reveal a slightly bluish disk, while telescopes with a primary mirror at least 16" in diameter may reveal slight color and brightness variations in the interior.


14 November 2012

Solar Activity and Winter Observing

We could be going through Solar max now: 
 Latest graph: http://www.swpc.noaa.gov/SolarCycle/

The latest graph of sunspot count:

Latest Sunspot number prediction


SUBSIDING STORM: Last night, Nov. 13/14, Northern Lights spilled across the Canadian border into the United States during a moderately strong (Kp=6) geomagnetic storm. Spotters report naked-eye auroras just barely over Colorado. Cal is always possible so keep looking up and North. Active Astro sites prove to be the best for catching aurora posts but this NOAA page gives you a Kp map - Click on North America:
http://www.swpc.noaa.gov/Aurora/#kpmaps

Click to images to enlarge!

This Email alert can hedge you bets for solar flares and aurorae - I use it for h-alpha:
Real Time e-mail Solar Flare Alert: http://www.ips.gov.au/mailman/listinfo/ips-flare-alert  (see also http://www2.gi.alaska.edu/AuroraAlerts/ )

12 November 2012

Solar Observing Nov 4th



Observe The Sun Safely - Never look at the Sun without a proper filter! 
Solar Programs are held 1st Sunday of every Month 2:00-4:00 PM at Houge Park  weather permitting
Take The Sunspot Quiz:

Solar Observing November 4th was sublime. Nice because the weather was perfect - cool temperature, clear skies and fair seeing. The Sunspot count was in the 40's with 4 sunspot pairs - two above the solar equator - two "mirror images" below. That was too neat to see :)

The symmetry of the Sun's magnetic field lines means that a sunspot pair which forms above the equator can equally likely form a mirror image below the equator - a negative ( -x , -y )  mirror image.
Sunspot generally form in pairs.

A sunspot pair can again be formed as a mirror image below the sun's equator because of the symmetry of the sun's magnetic field.

H-Alpha Prominences were large and notable all around the solar disk: hedge shape, spicule and branching tree shapes noted.

Folks we are a just a standard deviation from the solar cycle maximum. 







15 October 2012

Happy Halloween




Lecture On The Sun

Wednesday, October 17, 2012 - 12:00pm

Climate Change: What's Going On With the Sun?

SETI Institute: 189 Bernardo Avenue #100, Mountain View

Watch online:
https://plus.google.com/events/csqif06cn5u5auhv7bbsigr471o 

Dan Lubin
SETI Institute

Throughout the past century, while greenhouse gas (GHG) abundances have been steadily increasing and influencing Earth’s climate, the Sun has remained relatively bright and quiescent. Solar cycles have been steadily active, with instantaneous sunspot numbers at solar maximum exceeding 100 in every cycle since 1893 (Cycle 13). The climate warming we have experienced since the beginning of the modern industrial era cannot be attributed to the Sun. However, the recent minimum between Cycles 23 and 24, and NASA predictions of a substantially lower sunspot number at the 2013 solar maximum, suggest that the Sun’s recent bright and quiescent period may be ending. Both autocorrelation studies of recent solar cycles, and studies of solar analogs in nearby field stars, suggest a >40% chance of the Sun entering a new Maunder Minimum sometime in the Twenty First Century. During the historical Maunder Minimum (1645-1715), meteorological data from Europe and proxy records from global oceans indicate a substantially cooler climate, attributable to decreased solar irradiance. In our lifetime, we may therefore see a period of solar dimming in conjunction with increasing GHG abundances. A new Maunder Minimum would not entirely offset the projected GHG-induced warming (the GHG radiative forcing is at least three times larger than best estimates of the solar irradiance decrease). Instead, the complex interactions between radiative balance and atmospheric dynamics yield unusual regional patterns of pronounced warming versus cooling. This seminar will address the physical basis of climate change in the context of both GHG and solar variability, and will also extend the discussion to the influence of stellar variability upon habitable zones.