The Observer of the Twin City Amateur Astronomers
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THE OBSERVER OF THE TWIN CITY AMATEUR ASTRONOMERS Volume 42, Number 11 November 2017 INSIDE THIS ISSUE: 1«Editor’s Choice: Image of the Month – Tulip Nebula 2« President’s Note 3«Calendar of Celestial Events – November 2017 3«New & Renewing Members/Dues Blues/List/Forum 3«Subscribing to Our E-Mail List & Forum 4«This Month’s Phases of the Moon 4«Local Sunrise and Sunset Times for November 4«AstroBits – News from Around the TCAA 7«A Cosmic Halloween 8«TCAA Goes on Record… 9«On Sunspot Rings 10«TCAA Photo Gallery 11«Tim Stone’s 2018 Astronomy Calendar 12«Education and Public Outreach for October 2017 12«Public Viewing Sessions for 2018 13«TCAA on Facebook and Twitter 13«HowTimeFlies 13«Renewing Your TCAA Membership EDITOR’S CHOICE: IMAGE OF THE MONTH - TULIP NEBULA 14«TCAA Treasurer’s Report for October 2017 Editor’s Note: This month’s image is by Jim Gibbs. Jim writes, “Sharpless 101 (Sh2-101) is a Hydrogen II region with an emission nebula located in the constellation of Cygnus, the Swan. S22-101 is sometimes also called the Tulip Nebula because it appears to resemble the outline of a tulip when imaged photographically with enough exposure. It was catalogued by astronomer Stewart Sharpless in his 1959 catalog of nebulae. It is at a distance of about 6,000 lightyears (5.7×1016 km; 3.5×1016 mi) from Earth. Its apparent magnitude is 9 with dimensions of 16 x 9 arc seconds. Sh2-101, at least in the field seen from Earth, is in close proximity to microquasar Cygnus X-1, site of one of the first suspected black holes. Cygnus X-1 is the brighter of the two stars (lower star) in close vertical proximity just to the left of Sh2-101 in the image presented here (https://en.wikipedia.org/wiki/Sh2-101). This image is a narrowband combination of Hα, SII, and OIII used to produced and RGB color image. As with most hydrogen regions with an accentuated emission nebula, to obtain the green and blues I had to double the acquisition times for SII and OIII respectively. The image was taken 9/9/17 from the east outskirts of St. Joseph, IL. The image is composed of 8x300s Hα, 16x300s SII, and 16x300s OIII. The TCAA is an affiliate of the Astronomical League. For It was taken with a SBIG ST-8300M on an Astro-Tech Ritchie Chretien more information about the TCAA, be certain to visit our 8” with an Atlas Mount. Calibration, alignment and stacking was done club website. with CCD Stack, some preprocessing done with Images Plus, and post processing with Photoshop CS6. Copyright © 2017 TCAA 1 All rights reserved. Vol. 42, No. 11 The OBSERVER of the Twin City Amateur Astronomers November 2017 PRESIDENT’S NOTE The OBSERVER If November is typical this year, there will be precious few nights for outdoor is the monthly electronic newsletter of Twin astronomy. The cold, damp drizzle that precedes the winter snows has already arrived. City Amateur Astronomers, Inc., a registered 501(c)(3) non-profit educational organization With harvest winding down, the fields are mostly bare, and the land itself seems to be of amateur astronomers interested in settling in for the same dormant season our astronomy will endure. Our final Public studying astronomy and sharing their hobby Viewing Session was held October 14, with overcast skies, as has been somewhat typical with the public. of our schedule this year. As astronomers, it’s tempting to go into hibernation, and await those spring nights with all their extragalactic treasures. TCAA OFFICERS & CHAIRPERSONS So, what can we do in the winter? Well, in addition to maintaining our equipment, PresIdent & DIrector/Property Manager collimating our optics, and reading up on the latest breakthroughs (isn’t the recent LIGO Tim Stone 309-531-2401 result exciting?), we can move in to the Waynesville observatory! That’s right! We have [email protected] been approved for occupancy by DeWitt County, and while we don’t yet have any Vice PresIdent & Director/PublIcIst equipment there, we can begin to use the site for our astronomical pursuits. Darren Erickson 309-336-0103 [email protected] As we begin to use the site, it’s important that we all understand a few ground rules. First, this land is being leased from a very enthusiastic land owner near Treasurer & DIrector/Registered Agent Waynesville. He and his wife keep their residence there as well, and we must always be Dave Osenga 309-287-0789 [email protected] very mindful of that. Let’s be good tenants: keep our noise down, keep our lights down, and be respectful of the property there as we drive in and out. We have an easement to Secretary & DIrector/HIstorian/EdItor Carl J. Wenning 309-830-4085 use the driveway, but we don’t have permission to park in it. Let’s keep to ourselves [email protected] there, and we’ll enjoy the use of that land and the ongoing enthusiasm of its owner for years to come. Director & ObservIng Programs CoordInator Jim Gibbs 847-809-2232 There are no facilities on the site. Please keep that in mind if you plan to go there in [email protected] the evening. The closest facilities are at a Casey’s in Wapella, about five miles away. We AstronomIcal League Correspondent ask that you, under no circumstances, ask the landlord if you may use the facilities in the Robert Finnigan 309-846-9533 house. Just know before you head down there that facilities are unavailable, and plan [email protected] what you eat accordingly. Webmaster At times, the landlord may come out to check what you’re doing. If you’re Lee Green 309-454-7349 approached, let him know that you’re with the astronomy club. He may want to know [email protected] your name, and may introduce himself. We enjoy a very cordial relationship with the LightIng EducatIon Coordinator landlord and his wife, and they’re interested in what we’re doing there. You can take the Lisa Wentzel unlisted number opportunity to show them your equipment, and show them some of the wonders of the [email protected] sky if they’d like to have a look through your telescope. MembershIp CoordInator As property manager, I feel that it’s important for me to personally introduce you to Tom Willmitch 309-846-2423 the site. So, if you’d like to use the site, I’m asking you to contact me, so we can arrange a [email protected] trip down there. My email is [email protected]. I’ll show you around, let you Technology Coordinator know our property lines, and then when you wish, you can go there to observe. Justin Meyer 630-649-0611 I’m very excited for the construction phase of this observatory to be winding down. [email protected] I’d like to personally, and on behalf of Twin City Amateur Astronomers, thank our The OBSERVER anonymous donor for the tremendous donation of this facility to our club. That we have Carl J. Wenning, Editor in Chief an observatory like this is simply amazing to me. Well done, TCAA! Paul Pouliot, Assistant Editor Tim Stone, President Submission deadline end of month. MEMBERSHIP DUES Individual Adult/Family $40 Full-time Student/Senior $25 (Senior status equals ages 60+) To join, send your name, contact info and dues payment to Dave Osenga, TCAA Treasurer, 1109 N. Linden St., Normal, IL 61761-1471. Copyright © 2017 TCAA 2 All rights reserved. Vol. 42, No. 11 The OBSERVER of the Twin City Amateur Astronomers November 2017 CALENDAR OF CELESTIAL EVENTS – NOVEMBER 2017 NEW & RENEWING MEMBERS The following individuals have paid dues for new or MORNING PLANETS (11/15): Venus, Mars, Jupiter, Uranus st renewed memberships as of October 31 , 2017. (Others EVENING PLANETS (11/15): Mercury, Saturn, Uranus, Neptune who paid after that date will appear in the December 2017 issue of The OBSERVER.) 04 Full Moon – The Moon will rise at sunset and set at sunrise. This full moon was known by early Native American tribes as the Full Beaver Moon because this was the time of year Sandullah Epsicokhamm, Karthick Kannaiyan, to set beaver traps before the swamps and rivers froze. It David Fulghum, Vinny Hinckelman, Kathryn Froelich, also has been known at the Frosty Moon and the Hunter’s and Patrick Hand Moon. 05 DaylIght SavIng TIme Ends – We return to Standard Time DUES BLUES on Sunday at 2:00 AM. Turn your clocks back one hour. Remember the saying, “Spring forward; fall backward.” If you have received a “your dues are due” statement 10 Last Quarter Moon – The waning, half-lit moon rises along with the email that brought you this issue of The around midnight and sets around midday. OBSERVER, please remit your dues to Mr. Dave Osenga, TCAA Treasurer, 1109 N. Linden St., Normal, IL 61761- 13 ConjunctIon of Venus and JupIter – A spectacular 1471. Dues are currently $25 for seniors (60 years of age conjunction of Venus and Jupiter will be visible in the and over) and $40 regular. morning sky. The two bright planets will appear quite close, only 0.3 degrees apart. Look for this impressive pairing in SUBSCRIBING TO OUR E-MAIL LIST & FORUM the eastern sky just before sunrise. By subscribing to a group’s mailing list, you will receive 17/18 LeonIds Meteor Shower – The Leonids is an average email messages from the group so you won’t have access shower, producing up to 15 meteors per hour at its peak.