The October 2013 Newsletter
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WESTCHESTER AMATEUR ASTRONOMERS OCTOBER 2013 Sky tch Xmas Comes Early Olivier Prache took this stunning image of NGC 7331 and Stephan’s Quintet in Pegasus (ML-16803 camera, 16 hours In This Issue . total exposure over the last days of August and first week of September). pg. 2 Events for October NGC 7331 (aka Caldwell 30) is the large spiral galaxy in pg. 3 Almanac the upper left of the frame. Some 50 million light years pg. 4 A History of Star Maps distant, the galaxy has been compared to our Milky Way (although currently a central bar is suspected for the Milky pg. 10 Astro-photos Way). The Quintet (five galaxies grouped lower right) was pg. 12 How to hunt for your very own immortalized in the holiday movie “It’s a Wonderful Life.” supernova! The Quintet resides some 300 light years distant (only four of the galaxies are thought to be interacting.) THE ASTRONOMY COMMUNITY SINCE 1983 Page 1 WESTCHESTER AMATEUR ASTRONOMERS OCTOBER 2013 Events for October 2013 WAA October Lecture Renewing Members. “Saving Hubble” Matthew Fiorello - Bedford Friday October 4th, 7:30pm Doug Baum - Pound Ridge Lienhard Lecture Hall, Pace University Tom Boustead - White Plains Pleasantville, NY Satya Nitta Cross River Saving Hubble, an independent documentary film Kopernik AstroFest 2013 directed by our speaker, David Gaynes, examines NASA’s decision in 2004 to cancel the final Hubble This event will be held at the Kopernik Observatory & Space Telescope servicing mission, and introduces us Science Education Center – Vestal, NY from October to the people who united to save it. Many films have 4th through 6th, 2013. Presented by the The Kopernik been made about what Hubble teaches us about the Astronomical Society, the Kopernik Observatory & universe. This is the first time a film about Hubble has Science Center and the Night Sky Network; the asked “What does this machine say about us?” Mr. Astrofest will feature astronomy workshops, solar Gaynes will discuss the film and show excerpts. In viewing, observatory tours and speakers from the addition, he will bring copies for purchase, as well as amateur and professional communities as well as some popular Hubble T-shirts. Free and open to the public. Directions and Map. observing at night. Dry camping is available on-site for a nominal fee. To register and for more Upcoming Lectures information go to the Astrofest website. (Note: This Lienhard Lecture Hall, event is not affiliated with the WAA). Pace University Pleasantville, NY On November 1st, science reporter Andy Poniros will present on his experiences as a science reporter covering Space Shuttle Missions STS-134, STS135 and other Shuttle related topics for WPKN FM radio. Lectures are free and open to the public. Starway to Heaven Saturday October 5th, Dusk Meadow Picnic Area, Ward Pound Ridge Reservation, Cross River, NY This is our scheduled Starway to Heaven observing date for October, weather permitting. Free and open to the public. The scheduled rain/cloud date is October 26th. Participants and guests should read and abide by our General Observing Guidelines and Disclaimer. Directions. WAA APPAREL Harvest Moon Charlie Gibson will be bringing WAA apparel for sale to Bob Kelly took this image on September 19th-- WAA meetings. Items include: four days after perigee with a Canon XS 250mm •Caps and Tee Shirts, $10 zoom on a tripod (cropped from the larger •Short Sleeve Polos, $12 original f16 ISO 200, 1/250 second exposure). Notes Bob:What's somewhat interesting is how much the moon is tipped to the 'left' so that the Call: 1-877-456-5778 (toll free) for announcements, Ocean of Storms is all the way over to the weather cancellations, or questions. Also, don’t forget western limb of the moon and how irregular is to periodically visit the WAA website. the eastern limb as the sun is setting there. THE ASTRONOMY COMMUNITY SINCE 1983 Page 2 WESTCHESTER AMATEUR ASTRONOMERS OCTOBER 2013 Almanac For October 2013 by Bob Kelly Oct 4 Oct 11 Oct 18 Oct 26 So, do you have a good view of the southwestern 2:30am and 26th after 4:30am. Even cooler is when horizon? You’ll know if blazingly bright Venus is three shadows will play on the planet, when Jupiter is visible after sunset. Venus is outstanding at magnitude low in the sky, around 1am on the 12th. Don’t get minus 4.4, only a fist’s width above the horizon, with fooled by the ‘extra’ moon when Delta Geminorum fainter Saturn further to the right and Mercury even passes behind Jupiter around the 4th. lower to the right. Bring a chart with their locations; Explorers stationed on the southern half of our Moon it’s easier to tell the players with a scorecard. The would see a partial solar eclipse on Friday evening, Moon glides above them from the 6th through the 9th. the 18th. Since the Sun is not fully eclipsed, as seen October is my favorite month for Subway Astronomy! from the Moon, the lunar eclipse we see from Earth is Jupiter’s so high in the dawn sky, your elevated only a faint smudge on the southern half of the face of subway or train platform probably blocks a view of the Moon. It’ll be darkest a bit before 8pm. the magnitude –2.3 planet. So look lower toward the Earth makes our closest pass at Uranus early in brightening horizon where Mars will add emphasis to October. Get finder charts for Uranus, up all night at the backward question mark in Leo with Regulus magnitude +5.7, and Neptune, well up after sunset at nearby. They’ll be closest at mid-month – just about +7.9, to get your best views of the two ice giants for the same brightness. Compared to terrestrial lights, the year. Are they blue? How blue? Does your say traffic lights, the colors of objects in the sky are perception change with changing magnification? rather pale. Here’s a chance to compare reddish Mars and bluish Regulus. As they get closer do their If you can avoid the streetlights, the cold, clear nights clashing colors become more noticeable? Does the are great for watching the Milky Way. It starts out brightness of the sky appear to change their hues? The bisecting the sky from southwest to northeast early in pre-dawn sky also gives a preview of Orion and the the evening, and stands a little more to west as the winter constellations. The Moon rides high in the night gets later and the month gets longer. morning sky to start and end the month. Venus gets 45 degrees out to the left of the Sun, We experience our darkest morning of the year – the making it easier to see in daylight, although Venus date of our latest sunrise of the year (by our clock spends most of the day lower in the sky than the Sun. time) - on November 2nd at 7:27am EDT. On The best time to try is later in the afternoon, after November 3rd, the sun rises at 6:28am EST – a Sun carefully blocking out the Sun. Saturn and Mercury partially eclipsed by the Moon until about 7:11am. will also be to the left of the Sun, but closer to the Sun and dimmer, making them harder to spot in daylight. Mars also points the way to much talked about, but Mercury briefly becomes the closest planet to us at little seen Comet C/2012 S1 ISON. Here’s one time month’s end, but it’s of no use to us as Mercury will when two objects that look near in the sky are actually be too close to the Sun to see by then. But Venus is near each other! ISON passes about 6.7 million miles gradually appearing larger in a telescope and its phase above Mars’ north pole on October 1st. Mars and is decreasing to 50% sunlit by Halloween. ISON appear closest to each other in our skies when Mars joins Regulus at mid-month. Based on recent The International Space Station has more company, observations, ISON may be no brighter than +10 with the commercially launched Cygnus unmanned magnitude then. It’ll be easy to point in the right supply ship visiting. Cygnus was launched from direction, but hard to pick out ISON without a Wallops Island, Virginia, – a daytime launch, but seen moderate-sized telescope. by people over a wide area to our south. Because the ISS is in a highly inclined orbit, launch sites further Jupiter rules! High in the morning sky, Jupiter’s a north than the Kennedy Space Center in Florida are glitzy belt buckle on a Gemini twin. With an usable. Go out and wave at the ISS in the mornings elongation of 90 degrees away from the Sun, Jupiter’s through the 4th, and in the evenings starting on the 6th. four brightest moons cast their shadows on the giant Also, could the ISS become the human-made object planet’s disk even though they are not in front of the seen by the most humans with their own eyes? Think planet from our point of view. Several times this about it and let me know if there are other ‘manmade’ month, two moons’ shadows at once are visible on the objects spied live by more people. planet. The best times for us are on the 19th about THE ASTRONOMY COMMUNITY SINCE 1983 Page 3 WESTCHESTER AMATEUR ASTRONOMERS OCTOBER 2013 Articles and Photos A History of Star Maps by Larry Faltz We’ve become jaded.