Check out this excellent video presentation by some university students who are trying to make a difference. Vote for their video to help in the fight against light pollution.
http://www.tdgogreenchallenge.com/video/id/149/playid/149
Request for archival data: V1647 Ori and McNeil’s Nebula
February 15, 2011: Dr. Colin Aspin (U. Hawaii) has requested archival images and other observations of the FU Orionis variable V1647 Ori and the surrounding field over the previous 10 years in support of a study of this star. Aspin writes that he is hoping to obtain more data with which to create a multi-year light curve of this star to put present-day observations in context of its past behavior.
The AAVSO international database contains fewer than 50 observations of this star over the past ten years; however, V1647 Ori lies near the bright reflection nebula M78 (central coordinates: RA: 05 46 46.7, Dec +00 00 50), and is believed to be the illumination source of the recently erupted object McNeil’s Nebula, first discovered in 2003. Observers with deep-sky images of the M78 field and/or of McNeil’s Nebula may have images in which V1647 Ori/McNeil’s Nebula are visible. AAVSO observers with sufficient experience in image reduction are asked to photometer their images to obtain magnitudes of V1647 Ori and to submit these data to the AAVSO; Aspin also requests that you contact him for copies of your images as well. All observers are invited to contact Dr. Aspin directly (caspin@mac.com) with questions and for further information and assistance; he notes that any observers who provide useful data on V1647 Ori and/or McNeil’s Nebula will be acknowledged by name in the forthcoming publication to be submitted to the Astronomical Journal.
V1647 Ori is located at the following (J2000) coordinates:
RA: 05 46 13.14 , Dec: -00 06 04.8
Charts for the V1647 Ori field are available via VSP:
http://www.aavso.org/vsp
We note that due to the presence of nebulosity in this region, observers should consider plotting DSS charts rather than using the default plotting option.
Please submit all observations to the AAVSO using the name “V1647 Ori”.
This AAVSO Special Notice was prepared by M. Templeton.
—————————————————
SUBMIT OBSERVATIONS TO THE AAVSO
Information on submitting observations to the AAVSO may be found at:
http://www.aavso.org/webobs
SPECIAL NOTICE ARCHIVE AND SUBSCRIPTION INFORMATION
A Special Notice archive is available at the following URL:
http://www.aavso.org/special-notice-archive
Subscribing and Unsubscribing may be done at the following URL:
http://www.aavso.org/observation-notification
Page Editor: Matthew Templeton
Last Updated: February 15, 2011 – 4:23pm
Keywords:
* archival data
* deep-sky
* front page news
* Observing campaigns
* Special Notices
* young stellar object
* YSO
NASA’s Stardust spacecraft closes in for a Valentine’s Day rendezvous with Comet Tempel 1
Some 340 million kilometers away, out beyond the orbit of Mars, the Stardust spacecraft is getting ready for a big Valentine’s Day date. On February 14 the NASA craft will fly past Comet Tempel 1 at a planned distance of only 200 kilometers, getting a good look at the s…econd comet it has investigated at close range since the probe’s 1999 launch….
Source:Scientific American – Space
Published:2011-02-11 22:56:00 GMT
Here’s a link to the Aurora Cam in Yellowknife
Click here to get to the Canadian Space Agency’s aurora cam page
Here’s a link to the chart of 100 excellent double stars
Click here to be taken to the Astronomical League list of 100 great double stars
A few other things were mentioned:
here’s the link to the observer’s certificate. Please print one off, and check off your targets you have already done, or do once you have printed it. Turn it in to me at the meeting and i will get back to you with a duly crafted ‘real’ one!
It’s more than likely, since the moon sets early, and if the sky
is clear, look north for the green and red glow of aurora.
It’s been a while since we got a magnetic index of 6, and that’s what it is now.
Look up at midnight if it’s clear, every night, because aurora
are hard to predict!
This is from Mike Jefferson:
“LOFAR II, for January 21/2011, logged one C-class flare @ 12:00 noon of about 2.5 ‘magnitude’ – not very large but interesting and satisfying after a barren period of weeks.
Today, the sun seems to have regressed back to its recent inactivity – but for how long?
For the 21st, the GOES data shows 5 small C-class, x-ray events, of which we bagged the one most significant. Another occurred during our night period and the other 3 were too small for LOFAR II to detect reliably.
According to NASA’s Solar Dynamics Observatory, sunspot 1149 in the sun’s northern hemisphere is crackling with these C-class events, is where our event originated, is growing and is poised to possibly develop into an M-class event in the next short while.
HAAers should stay alert to the possibility of a cataclysmic solar event and possibly aurorae!”
— Mike Jefferson
This weekend’s weather forecast is calling for alarmingly cold temperatures. Even a keen observer would be reluctant to drag all their equipment outside in -20 degree weather. (That’s cold enough to freeze your Bob’s Knobs off!)
Matthew Mannering has an excellent article on observing with binoculars in the January issue of our newsletter. In his article, he states:
“Binoculars also have a very important role in my winter observing. Quite honestly there are lots of times I wouldn?t go out if I had to haul my big stuff out of the house. Cool down times for a large scope just get worse as the temperature drops and I don?t have a secure yard to go leaving it outside for hours at a time unattended. Mostly, I just take out my binos and within about 10 minutes they have reached equilibrium with the outdoor temperature. In fact you can start using them right away although you will notice some astigmatism and the focus will change continuously until they reach equilibrium. Better yet, when your toes and fingers start to turn blue; which I find seems to happen all of a sudden, tear down time is close to zero.”
You can read his entire article on page 15 here: http://www.amateurastronomy.org/EH/January2011.pdf
Observing with binoculars is a great way to enjoy the crystal clear winter skies without having to spend too much time outdoors in these unappealing temperatures! You can check out the double stars in Orion that Steve mentions in his Sky This Month column (page 12 on this month’s newsletter – see the above link) and in his blog posting of January 15th.
Here’s a listing of the doubles i was expounding in my Talk last night.
They are in Orion.
All of these multiple star systems are within a minute of arc
in size. The tightest one, Zeta, is only 2.4 arc seconds, and will
test your telescope, but don’t dispair, it’s a triple star and you can
separate the larger separation easily.
In order of increasing difficulty,
(1) Mintaka, the western star in Orion’s belt (2.2, 6.3)
(2) Iota, the tip of the sword, (2.8, 6.9). Note the colours
(3) and in the same field of view, Struve 747 (4.8, 5.7)
(4) Theta 2, a wider grouping just east of the Trapezium
(5) 1/3 degree south of Betelgeuse, is Struve 817. Evenly matched, 8.2 and 8.3. Can you discern which is the brighter one?
Now reach for the telescope…
(3) Lambda, Orion’s Head (3.6, 5.5)
(2) Rigel, the western foot (or is it a knee?) (0.1, 6.8, 1/600 of a degree)
(8) Theta 1, the ‘Trapezium’ in the heart of the Orion Nebula – do you agree it’s the finest looking multiple star system in the sky?
(9) Sigma, near the eastern star of Orion’s Belt… it’s one of the brightest and most massive double star in the sky.
Those stars are more than 30 thousand times brighter than the sun, each) (4.0, 7.5, 6.5) The close pair is 12 arcseconds.
(10) Zeta Orionis, the eastern star in Orion’s Belt. It’s a triple (1.9, 4.0, 9.9) (The close pair is 2.4 arcseconds apart)
9 of these are on the “Astronomical Leage’s” top 100 Double Stars.
If you observe them, do a little sketch. If you get these, and the other 90, there’s an award for you!
Clear Skies!
Steve
This is the December 21, 2010 Lunar Eclipse; approximately 3:25 AM, from my condo complex parking lot.
Tamron 300mm f/2.8 lens; Canon Digital Rebel 300D; 0.5 secs at ISO 400.
— Bob Christmas
Watched the Eclipse from 2:25 to 2:50 this morning. At 2:37 I was looking through my binos and a brilliant meteor passed directly in front of the moon. It was startling as the contrast of the white flash against the orange background made me blink. We had partially clear skies in brantford and the seeing at times was very good. Easily saw the 3 globs in Auriga. M35 in Gemini and the moon just fit into the same field of view in my binos. Hope any who stayed up had clear skies! By the way, the time on the site is off by one hour so it looks like I posted this before it actually happened.
Follow up: It turns out that there was a meteor shower scheduled for last night; the Ursids. I guess I just got lucky being in the right place at the right time!
