Home      Calendar      About OCA      E Zine      Resources      Image Gallery      Members
    www.ocastronomers.org /
You must login to access member-only information
Login
   

Saturday August 11th Black Star Canyon star party
By: Steve & Bonnie Short
August 8, 2012 3:23AM PDT
Views: 2225


BSC Star Party Notice  - Saturday August 11th, 2012

 

Hello Fellow OCA club members!

 

This Saturday, I plan to open the gate around 7:15 pm, which is about a half hour before the sun sets. The weather report for this Saturday indicates that Orange County will be sunny, hot and very clear.  But keep an eye on the OCA website “Home” page (below the next speaker info) where I will post a notice should the star party be cancelled for any reason as that area could be closed due to high fire danger.

 

We should have dark skies as the last quarter Moon will not rise until after midnight Saturday. First time visitors might want to get to the star party site while it is still light so they can find their way down the dirt road and into the parking area. Remember that you take the 2nd farm gate on the left after turning on Black Star Canyon Road (the 1st farm gate is the Xmas Tree farm). If you come in after dark, you should drive in with your headlights off!!! The dirt road will be marked with red flashers and you can hold a flashlight out the driver’s window to light up the road directly in front of your car.

 

Warning:  No Pets allowed!  (This is an OC Parks and Nature Conservancy rule).

 

Satellites:

  The ISS (International Space Station) will make one magnitude 0.2 visible pass Saturday evening starting at 8:49:57 pm 10 degrees high NNW for just 20 seconds.

  The HST (Hubble Space Telescope) will also make two visible passes Saturday evening. The first magnitude 2.1 pass will be at 8:12:30 pm WSW 10 degrees high going SSW 30 degrees high at 8:16:13 and then dropping back to 10 degrees high SE at 8:19:57. The second magnitude 3.5 pass will be at 9:55:30 pm SW 10 degrees high going SW to 11 degrees at 9:55:47 where it will fade out of sight.

  We will not get to see any Iridium flares Saturday evening at BSC. But I am sure we will see a few dim satellites pass overhead as we are looking up in the sky.

 

Planets & Pluto:

~Mercury, (Mag 2.3) sets at 6:40 pm so will not be seen this Saturday evening. It is about 65 million miles from Earth in constellation Cancer with about a 9” diameter disk. It rises 80 minutes before sunrise so might be spotted just above the horizon about 15% lit.

~Venus, (Mag -4.2) will not be seen Saturday evening as it sets about 4:40 pm in constellation Orion. Hope you did not miss the rare Venus transit that occurred June 5th. Venus is now about 60 million miles from Earth and can be seen before dawn as it rises at 2:50 am in the Hunter’s raised arm. On Saturday morning Venus should be 50% lit with a 25” disk.

 ~Mars, (Mag  1.1) is now in Constellation Virgo rising about 11:20 am so is visible high in the sky as the sun sets until 10:35 pm. Star Spica and planet Saturn will all be about in a straight line with Mars, all within a 5 degree circle. Mars is about 155 million miles away now with a 5” disk so none of our scopes should be able to see any detail on the red planet.

~Jupiter, (Mag -2.0) will set about 3:25 pm in constellation Taurus Saturday evening before the Sun sets, so will not be seen at our star party. It rises at 1:25 am so can be seen in the early morning. It now is about 501 million miles from Earth getting a little closer every day.

~Saturn, (Mag 1.1) will be in constellation Virgo this Saturday just 5 degrees from bright star Spica and planet Mars, and since it rises about 11:30 am, will be visible just after sunset high in the sky.  Saturn is about 937 million miles away slowly moving farther from Earth. Saturn’s globe measures 16” but the rings span 37” and tilt 14 degrees to our line of sight this month. As it gets dark, largest moon Titan (magnitude 8), which revolves around Saturn every 16 days, will be far west of Saturn. Moon Enceladus will be seen just on top of Saturn followed by moon Rhea further east. Moon Tethys will be just under Saturn a bit west and moon Dione will also be under Saturn just a bit east under the rings.

~ Uranus, (Mag 5.8) will be in constellation Cetus this Saturday evening but doesn’t rise until just after 10 pm so can be seen at the BSC star party. It shows up as a small 3.6” blue-green disc in a telescope. It is about 1.808 billion miles away from Earth.

~ Neptune, (Mag 7.8) is in constellation Aquarius, about 2.700 billion miles away this week slowly moving closer to Earth. It is seen as a bluish gray 2.4” disc in a telescope. We should be able to see it at BSC this Saturday evening, as it rises about 8:30 pm.

 ~ Pluto, (Mag 14.0) rises about 5 pm so might be seen Saturday evening.  It is 2.927 billion miles from Earth in constellation Sagittarius. Since it is so dim, you will probably need a 10” or larger telescope to see it visually. The June 2012 Sky & Telescope magazine shows Pluto’s path for all of 2012 on pages 52-53.  On Saturday, Pluto will be just a half degree from the center of M25.

 

Meteors/Comets/Asteroids:

The Perseid meteor shower reaches its peak Saturday night, when observers under dark skies might see 60-80 meteors an hour looking northeast after midnight. These meteors are tiny pieces of rock and dust from Comet 109P/Swift Tuttle. We normally see a few sporadic meteors at every Black Star Canyon star party.

 

Brightest visible Comets:

This month all the comets orbiting the Sun are very dim so will be extremely difficult to find and see. 

 

The magnitude 13.4 Comet C/2011 L4 Panstarrs can be seen Saturday at the BSC star party in constellation Libra (10 degrees in front of the Scorpion’s head). It is 700 million miles from the Sun at this time. This comet was discovered in June 2011 by a team using the Pan-Starrs telescope on Maui and has a very parabolic orbit. It will approach within 30 million miles of the Sun in early 2013, about the distance Mercury is from the Sun.

 

 

 

The magnitude 13.8 Comet 96P Machholz can be seen Saturday at the BSC star party in constellation Coma Berenices (between Arcturus and the tail of Leo the Lion). It is just 87 million miles from Earth at this time. This comet was discovered in May 1986 by Donald Machholz and has a period of 5.3 years. It approaches within 11.5 million miles of the Sun, the closest of any known periodic comet.

 

The magnitude 13.3 Comet C/2009 P1 Garradd is in the constellation Leo now so is too close to the Sun to be seen Saturday. The comet is 398 million miles from Earth traveling back into the depths of the solar system so is getting very dim.

 

 

Brightest visible asteroids:

 

Bright asteroids Ceres and Vesta are close to Jupiter this month so cannot be seen Saturday evening but can be seen in the early morning.

 

Minor Planet 2 Pallas (Mag 9.3) is in constellation Cetus this month just 5 degrees  north of Uranus. It is about 219 million miles from Earth and has an orbit period of 4.61 years.  This asteroid may be the largest irregular object in the solar system as it is not rounded under its own gravity. It was discovered in 1802 by astronomer Heinrich Olbers.

 

Minor Planet 18 Melpomene (Mag 9.5) is in constellation Ophiuchus this month about 15 degrees northwest of the “Teapot’s” lid so could be spotted at the star party. It is about 123 million miles from Earth at this time and has an orbit period of 3.48 years. It is potato shaped about 90 X 80 miles in diameter. This asteroid was discovered in 1852 by J. R. Hind from London.

 

 

Deep Sky:

This month let’s consider looking at some Messier objects in the Summer Triangle  near a line between Altair and Deneb:

 

M27, also known as the Dumbbell Nebula, is a magnitude 8 planetary nebula some 815-3500 light years away that spans 1.9 -8 light years. It is a popular target for amateur astronomers and looks like a small dumbbell near 5th magnitude star 14 of the Vulpecula constellation. Its age is estimated to be 20,000 years. You can find it slightly less than half way along a line drawn from Altair to Sadr.

 

M29 is a magnitude 6.6 open cluster in constellation Cygnus about 4,000 light years away spanning 8 light years. It contains about 50 stars, the brightest shining at magnitude 8.6 and its age is estimated to be 10 million years old. There are 6 bright stars in the cluster with 4 of them roughly forming the shape of the Great Square of Pegasus. It is just 1.8 degrees south of magnitude 2.2 Sadr (Gamma Cygni), the center star of the Swan’s wings.

 

 

 

Don't forget to bring your gloves, coats & sweaters in case it gets cold after the sun sets or later as the night approaches midnight when we close. After you set up your telescope, there are three picnic tables where you can sit and eat food you might bring, while waiting for the sky to get dark. Please remember to cart off all your trash as there are no garbage cans at BSC. There is also one portable restroom on site should nature call.

 

Hope to see you there.

 

Your OCA star party host,

Steve

Email this Article Printer Friendly Version




Related Articles
- Mars Mania at the UCI-OCA Mars Party
- Saturday 10/04/08 BSC star party
- Impressions of Starry Nights Festival
- Black Star Canyon star party Saturday April 10th 2010
- Anza Star Party, February 2004
- August 2004 Sirius Astronomer
- August 2004 President's Message
- Register for IDA fall meeting and CalStar 2005
- August 2005 Sirius Astronomer
- Saturday April 26th Black Star Canyon star party
- Saturday 02/26/11 Black Star Canyon star party
- Bommer Canyon Outreach/Public Viewing event tonight at 8:30
- Blackstar party 12/24/05
- Saturday May 12th Black Star Canyon star party
- Blackstar Canyon star party 01/21/06
- Blackstar Canyon Star Party this Saturday
- Blackstar Canyon star party 04/22/06
- AUGUST MEETING MOVED TO AUGUST 4!
- 05/20/06 Black Star Canyon star party
- 04/07/07 Black Star Canyon star party
- 12/23/06 Black Star Canyon star party recap
- 01/13/07 Black Star Canyon recap
- 02/10/07 Black Star Canyon recap
- Blackstar Canyon star party 07/29/06
- June 9th 2007 Black Star Canyon star party
- BSC star party July 7th
- 07/07/07 Blackstar Canyon Recap
- August 2007 Sirius Astronomer
- BSC star party Saturday Aug 4th
- 08/04/07 Blackstar Canyon recap
- August 2007 President's Message
- BSC star party Saurday Sept 1st
- BSC 06/17/06 star party
- Black Star Canyon star party Saturday 03/10/07
- 09/01/07 Black Star Canyon recap
- BSC star party Saturday Oct 6th.
- 10/06/07 BSC star party Recap
- Black Star Canyon star party Saturday 11/03/07 has been cancelled!
- Black Star Canyon star party Saturday 12/01/07
- 04/07/07 Black Star Canyon star party RECAP
- 03/10/07 Black Star Canyon recap
- August 2006 Sirius Astronomer
- Visitor Night at the UCI Observatory, August 18
- August 2006 President's Message
- 12/01/07 BSC star party recap
- Black Star Canyon star party 01/12/08
- Black Star Canyon star party 01/12/08
- 01/12/08 BSC star party recap
- Black Star Canyon star party Saturday 02/09/2008
- Black Star Canyon star party Saturday 02/09/2008
- 02/09/2008 BSC star party recap
- Saturday March 1st Black Star Canyon star party
- Black Star Canyon 08/19/06
- 12th annual Starry Nights Festival September, 2008
- Black Star Canyon 09/16/06
- 10/28/06 Black Star Canyon
- 11/11/06 Blackstar Canyon star party recap
- 03/01/08 BSC star party Recap
- Black Star Canyon star party 03/29/08
- 03/29/08 BSC star party recap
- 04/26/08 BSC star party Recap
- BSC star party Saturday May 31st 2008
- 05/31/08 BSC star party recap
- SoCal Starfest and Special Palomar Observatory Tour
- Saturday evening June 28th Black Star Canyon star party
- 06/28/08 BSC star party recap
- Saturday July 26th Black Star Canyon star party
- 07/26/08 BSC star party recap
- August 2008 Sirius Astronomer
- Black Star Canyon star party Saturday August 30th
- August 30th BSC star party recap
- Black Star Canyon star party 09/20/08
- Saturday 09/20/08 BSC star party recap
- Saturday 10/04/08 BSC star party Recap
- Saturday 11/22/08 Black Star Canyon star party
- Saturday 11/22/08 BSC star party recap.
- Black Star Canyon star party Saturday 12/20/2008
- August 2008 President's Message
- Black Star Canyon star party Saturday 02/28/09
- Saturday 02/28/09 BSC star party recap
- Saturday 03/21/09 Black Star Canyon star party
- Saturday 12/20/08 BSC star party recap
- Black Star Canyon star party Saturday 01/17/09
- Black Star Canyon star party Saturday 01/17/09
- Saturday 01/17/09 BSC star party recap
- Saturday 03/21/09 BSC star party recap
- Saturday April 18th Black Star Canyon star party
- 04/18/09 BSC star party Recap
- Saturday 05/16/09 Black Star Canyon star party
- 05/16/09 BSC star party recap
- Black Star Canyon star party Saturday 06/13/09
- 06/13/09 BSC star party recap
- 07/25/09 Black Star Canyon star party
- 07/25/09 BSC star party recap
- Saturday 08/15/09 Black Star Canyon star party
- 08/15/09 BSC star party RECAP
- Saturday 09/12/09 Black Star Canyon star party
- 09/12/09 BSC star party RECAP
- BSC star party Saturday Oct 10th
- 10/10/09 BSC star party RECAP
- August 2009 President's Message
- 11/07/09 BSC star party
- 11/07/09 BSC star party recap
- Saturday 12/12/09 Black Star Canyon star party
- BSC star party is cancelled!
- 02/26/11 BSC star party CANCELLED
- Saturday BSC star party January 9th
- 01/09/2010 BSC star party recap
- BSC star party Saturday Feb 06, 2010
- BSC star party 02/06/10 cancelled
- February Anza Star Party Cancelled - There is no Water there. - Do not go to Anza this weekend
- BSC star party this Saturday (03/06/2010)
- BSC star party 03/06/10 cancelled
- 04/10/10 BSC star party RECAP
- Saturday 06/25/11 BSC star party
- BSC star party Saturday May 8th 2010
- 05/08/10 BSC star party Recap
- Saturday 06/05/2010 Black Star Canyon star party
- 06/05/10 BSC star party reap
- Saturday 07/03/10 Black Star Canyon star party
- 07/03/10 BSC star party recap
- Saturday 08/14/2010 Black Star Canyon star party
- 08/14/10 BSC star party recap
- Saturday 09/04/2010 Black Star Canyon star party
- 09/04/2010 BSC star party Recap
- Saturday 10/02/10 Black Star Canyon star party
- 10/02/10 BSC star party recap
- Saturday 11/13/2010 Black Star Canyon star party
- 11/13/10 BSC star party recap
- Saturday 12/11/2010 Black Star Canyon star party
- 12/11/10 BSC star party recap
- Saturday 01/08/2011 Black Star Canyon star party
- 01/08/11 BSC star party CANCELLED
- 03/26/2011 Saturday Black Star Canyon star party
- 03/26/11 BSC star party CANCELLED
- 03/26/11 BSC star party CANCELLED
- Saturday 04/30/11 BSC star party
- 04/30/11 BSC star party recap
- Saturday 05/28/11 BSC star party
- 05/28/11 BSC star party Recap
- Saturday July 23rd Black Star Canyon star party
- Saturday October 1st Black Star Canyon star party
- 10/1/11 BSC star party Recap
- Saturday 10/29/11 Black Star Canyon star party
- 12/17/11 BSC star party cancelled
- 06/25/11 BSC star party Recap
- 07/23/2011 BSC star party recap
- Saturday August 20th Black Star Canyon star party
- 08/20/11 Black Star Canyon star party Recap
- 10/29/11 BSC star party Recap
- Saturday November 19th Black Star Canyon star party
- 11/19/11 BSC star party cancelled
- Saturday December 17th Black Star Canyon star party
- Saturday January 28th Black Star Canyon star party
- January 28th BSC star party cancelled
- Saturday February 25th Black Star Canyon star party
- 02/25/12 BSC star party Recap
- Saturday March 17th Black Star Canyon star party
- March 17th Black Star Canyon star party cancelled
- Saturday April 14th Black Star Canyon star party
- April 14th Black Star Canyon star party cancelled
- Saturday May 12th Black Star Canyon star party
- 05/12/12 BSC star party Recap
- Saturday June 23rd Black Star Canyon star party
- 06/23/12 BSC star party recap
- Saturday July 14th Black Star Canyon star party
- 07/14/12 BSC star party Recap
- 08/11/12 BSC star party Recap
- Saturday September 8th Black Star Canyon star party
- 09/08/12 BSC star party Recap
- Saturday October 20th Black Star Canyon star party
- Saturday 10/20/12 BSC star party is cancelled
- Saturday November 17th Black Star Canyon star party
- Saturday November 17th BSC star party cancelled
- Saturday December 8th Black Star Canyon star party
- 12/08/2012 BSC star party Recap
- Saturday 01/05/2013 Black Star Canyon star party
- 01/05/2013 BSC star party Recap
- Saturday 02/02/2013 Black Star Canyon star party
- 02/02/2012 BSC star party cancelled
- Saturday 03/02/2013 Black Star Canyon star party
- 03/02/2013 BSC star party Recap
- Saturday 04/06/2013 Black Star Canyon star party
- 04/06/13 BSC star partyRecap
- Saturday 05/04/2013 Black Star Canyon star party
- 05/04/2013 BSC star party Recap
- Saturday 06/08/2013 Black Star Canyon star party
- Saturday 07/13/2013 Black Star Canyon star party
- Saturday 08/31/2013 Black Star Canyon star party
- 08/31/2013 BSC star party Recap
- Saturday 09/28/2013 Black Star Canyon star party
- 09/28/2013 BSC star party recap
- Saturday 10/26/2013 Black Star Canyon star party
- 10/26/2013 BSC star party recap
- Saturday November 23rd Black Star Canyon star party
- CANCELLED: Saturday November 23rd Black Star Canyon star party
- Saturday December 28th Black Star Canyon star party
- 12/28/13 BSC star party Recap
- Saturday January 25th Black Star Canyon star party
- 01/25/2014 BSC star party Recap
- Saturday February 22nd Black Star Canyon star party
- 02/22/2014 BSC star party Recap
- Saturday March 29th Black Star Canyon star party
- 03/29/2014 BSC star party Recap
- Saturday April 26th Black Star Canyon star party
- 04/26/2014 BSC star party Recap
- Saturday May 24th Black Star Canyon star party
- Tonights May 24th BSC star party is cancelled
- Saturday June 21st Black Star Canyon star party
- 06/21/2014 BSC star party Recap
- Saturday July 19th Black Star Canyon star party
- 07/19/2014 BSC star party Recap
- Saturday August 23rd Black Star Canyon star party
- 08/23/2014 BSC star party Recap
- Saturday September 27th Black Star Canyon star party
- 09/27/2014 BSC star party Recap
- Star Hopping
- Pulsating and Erupting Variable Stars
- Saturday October 18th Black Star canyon star party
- 10/18/14 BSC star party Recap
- Saturday November 22nd Black Star Canyon star party
- 11/22/2014 BSC star party Recap
- Saturday December 13th Black Star Canyon star party
- CANCELLED: Saturday December 13th BSC star party
- Saturday January 24th Black Star Canyon star party
- Saturday January 24th Black Star Canyon star party
- CANCELLED Saturday January 24th BSC star party
- Saturday February 14th Black Star Canyon star party
- January 24th BSC star party Recap
- Saturday Feb 14th BSC star party Recap
- Saturday March 14th Black Star Canyon star party
- Saturday March 14th BSC star party Recap
- Saturday April 11th Black Star Canyon star party
- Saturday April 11th BSC star party Recap
- Saturday May 9th Black Star Canyon star party
- CANCELLED - Saturday May 9th BSC star party
- Saturday June 20th Black Star Canyon star party
- Saturday June 20th BSC star party Recap
- Saturday July 11th Black Star Canyon star party
- Saturday July 11th BSC star party Recap
- Saturday July 11th BSC star party Recap
- Starbeque postponed to August Star Party!!!
- Saturday Aug 8th Black Star Canyon star party
- Saturday Aug 8th BSC star party Recap
- Saturday Sept 5th Black Star Canyon star party
- Saturday Sept 5th BSC star party Recap
- Saturday Oct 3rd Black Star Canyon star party
- Saturday Oct 3rd BSC star party Recap
- Saturday Nov 7th Black Star Canyon star pary
- Saturday Nov 7th Black Star Canyon star party Recap
- Saturday Dec 5th Black Star Canyon star party
- Saturday Dec 5th Black Star Canyon star party Recap
- Saturday Jan 2nd Black Star Canyon star party
- Saturday Jan 2nd Black Star Canyon star party Recap
- Saturday Feb 13th Black Star Canyon star party
- Feb 13th BSC star party Recap
- Saturday March 5th Black Star Canyon star party
- CANCELLED-March 5th BSC star party
- Saturday April 30th Black Star Canyon star party
- Apr 30th BSC star part Recap
- Saturday May 28th Black Star Canyon star party
- May 28th BSC star party Recap
- Saturday June 24th Black Star Canyon star party
- June 25th BSC star party Recap
- Starbecue on 7/30/16!
- Saturday July 30th Black Star Canyon star party
- July 30th BSC star party Recap
- Saturday August 27th BSC star party
- August 27th BSC star party Recap
- Saturday September 24th BSC star party
- September 24th BSC star party Recap
- Saturday October 22nd BSC star party
- October 22nd BSC star party Recap
- Saturday Nov 19th BSC star party
- Saturday BSC star party-CANCELLED
- Saturday Dec 17th BSC star party
- Saturday BSC star party-CANCELLED
- Saturday Jan 21 BSC star party
- Saturday BSC star party-CANCELLED
- CANCELLED - Saturday Feb 18th BSC star party

| Search

Copyright © 2001 - 2017 Orange County Astronomers
Bringing the universe into focus since 1967
About Us | Site Map | Contacts
Calendar | Gallery | General Meetings

amazon Amazon | OCAstroShop OCAstroShop | youtube YouTube | google+ Google+
facebook Facebook | twitter Twitter | instagram Instagram