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The Observer of the Twin City Amateur Astronomers THE OBSERVER OF THE TWIN CITY AMATEUR ASTRONOMERS Volume 42, Number 5 May 2017 INSIDE THIS ISSUE: 1Editor’s Choice: Image of the Month – Jupiter 2President’s Log 3Calendar of Celestial Events – May 2017 3New & Renewing Members/Dues Blues/List/Forum 3Subscribing to Our E-Mail List & Forum 4Planets and Bright Stars in Evening Mid-Twilight 5This Month’s Phases of the Moon 5Local Sunrise and Sunset Times for May 5Movement Toward New Observatory: Update #1 6AstroBits – News from Around the TCAA 7Report from the NCRAL 2017 Meeting 8How “GoTo” Telescopes Work 9Becoming an Observer of the Sun – Part 3 12TCAA Photo Gallery 15Education and Public Outreach for April 2017 16May 27th Third POS of 2017 16Remaining POS for 2017 17Telescopes for Sale 18Camp Ondessonk Update #7 - Reminder 18TCAA on Facebook and Twitter 18HowTimeFlies 19Renewing Your TCAA Membership EDITOR’S CHOICE: IMAGE OF THE MONTH – JUPITER 19Treasurer’s Report for April 2017 20Breaking News: A Peek at the Plans… This month’s image is by Tim Stone. Tim writes, “I don’t recall the exact year I got my first real telescope. It might have been 1970 or 1971. It was a 6” Criterion Dynascope; in that day, it was quite a telescope for an 8th or 9th grade kid. I’ll never forget my first look through that telescope. My dad and I pointed it at Jupiter, put an eyepiece in it, and there it was, bigger than life to me. I could see its twin equatorial belts and its great red spot. To this day I have rarely, if ever, experienced the feeling I had that night. From that night on, Jupiter held a special spot in my heart. “My first feeble attempts at valid astrophotography began in 2008, with my Nikon D200 mounted on a tripod pointed down the eyepiece of my 8” Schmidt-Newtonian, taking afocal images of the Moon. It didn’t take me long to realize the futility of that exercise, so I purchased a cheap Meade Lunar/Planetary Imager, a rudimentary web camera, and began experimenting with using Registax to make The TCAA is an affiliate of the Astronomical League. For better images than was possible with a single-frame DSLR. It didn’t more information about the TCAA, be certain to visit our take me long to try my hand at Jupiter, and by 2010 I was making club website. Copyright © 2017 TCAA 1 All rights reserved. Vol. 42, No. 5 The OBSERVER of the Twin City Amateur Astronomers May 2017 decent images of that giant planet. I proudly showed them to my family and friends, all of whom were duly impressed. Then I rediscovered the TCAA and its deep-sky The OBSERVER astrophotography capabilities, and the rest, as they say, is history. is the monthly electronic newsletter of Twin “Fast forwarding to the first four months of 2017, you’d find me stymied by a City Amateur Astronomers, Inc., a registered 501(c)3 non-profit educational seemingly endless cloud cover. By April, I was desperate to take a picture of anything in organization of amateur astronomers the sky. Inspired by Jamey Jenkins’ beautiful solar imagery, and with a couple of nights interested in studying astronomy and with the forecast of a cloud-free, though not terribly transparent night, I decided to try sharing their hobby with the public. my hand again at webcam photography of Jupiter. It was near opposition, so I knew this TCAA OFFICERS & CHAIRPERSONS was the best time to try. So, with Tony Cellini’s help, we hooked up his Point Gray Chameleon to the 12” in the SGO, and away I went, happily recording avi files for President & Director/Property Manager Tim Stone 309-531-2401 stacking and processing. [email protected] “My hopes for the result were not too high. It had been nearly ten years since I’d Vice President & Director/Publicist tried such a thing, and while the equipment available to me was certainly much higher Darren Erickson 309-336-0103 quality than I’d had all those years ago, my experience had not advanced as far as the [email protected] equipment. The first night had terrible seeing, and the resulting image was not good. Treasurer & Director/Registered Agent But the weather gifted me with a second night, where seeing was very good, and I got Dave Osenga 309-287-0789 some good quality data. In addition to the monochromatic data from the Chameleon, I [email protected] used the club’s Celestron Skyris full color webcam to get some color data, though not of Secretary & Director/Historian/Editor equivalent quality. Carl J. Wenning 309-830-4085 “I’ve been working on processing the data for a few nights now. It’s taken that long [email protected] for me to remember how to do it, and to try out some things I’d never tried before to Director & Observing Programs Coord. see how much detail I can tease out of the data. I’m quite surprised at how well the Jim Gibbs 847-808-2232 result turned out. It’s certainly the best image of Jupiter I’ve ever made, by a long shot. [email protected] While there are people out there doing much higher quality planetary imaging, I’m Astronomical League Correspondent quite happy with the progress this result shows. I’m happy enough that perhaps I’ll Robert Finnigan 309-846-9533 keep this up, working to hone my skills some more!” [email protected] Webmaster Lee Green 309-454-7349 PRESIDENT’S LOG [email protected] As I write this note, I hear rain outside my window. It’s a nice Lighting Education Coordinator sound, and I like it, but it isn’t an astronomy sound. It reminds me Lisa Wentzel unlisted number of a song I learned when I was a child: “Though April showers may [email protected] come your way, they bring the flowers that bloom in May.” I’m Membership Coordinator tempted to rewrite it to something like “…they hide the galaxies that show in May.” Tom Willmitch 309-846-2423 [email protected] That said, the weather is beginning to break up and present us with some clear sky nights. Some of us have taken advantage of those nights already, using the visual Technology Coordinator instrument in the Sugar Grove Observatory to make observations of Jupiter, the moon, Justin Meyer 630-649-0611 [email protected] and some classic springtime deep sky objects. We’ve also done some imaging in the Prairie Sky Observatory. It feels good to get back to some outdoor astronomy. The OBSERVER None of that we’ve not been busy. As you may already know, we are beginning to Carl J. Wenning, Editor in Chief take steps to erect a third observatory at the Sugar Grove Nature Center, to house a Paul Pouliot, Assistant Editor 24” system. Personally, I’m excited about the possibilities of this system. Its long focal Submission deadline end of each month. length will allow us to photograph much smaller objects at a theoretical resolution of MEMBERSHIP DUES 0.3 arc seconds per pixel! With the adaptive optics setup that will be installed, it may very well be possible to get sub arc second resolution with this system. For the club, the Individual Adult/Family $40 Full-time Student/Senior $25 added facility will allow more participation in imaging activities, and will be yet another (Senior status equals ages 60+) attraction for the public to come and experience the sky as facilities like ours can give. It’s an exciting time to be part of the TCAA. Would you like to participate in the To join, send your name, contact info and dues payment to Dave Osenga, TCAA planning and project execution for this new facility? Just drop me a line. Don’t forget to Treasurer, 1109 N. Linden St., Normal, IL mark the May Public Observing Session on your calendar! I’m looking forward to seeing 61761-1471. you there. Meanwhile, take some time to catch some ancient photons! Clear Skies! Tim Stone, President Copyright © 2017 TCAA 2 All rights reserved. Vol. 42, No. 5 The OBSERVER of the Twin City Amateur Astronomers May 2017 CALENDAR OF CELESTIAL EVENTS – MAY 2017 NEW & RENEWING MEMBERS MORNING PLANETS (5/15): Mercury, Venus, Saturn, Uranus, The following individuals have paid dues for new or and Neptune renewed memberships as of April 25th, 2017. (Others who paid after that date will appear in the June 2017 issue of EVENING PLANETS (5/15): Mars and Jupiter The OBSERVER.) 02 First Quarter Moon – The waxing, half-lit moon rises around midday and sets around midnight. Sharon MacDonald, Tom Willmitch, Kelsey Christensen 06-07 Eta Aquarid Meteor Shower – The Eta Aquarids is an above average shower originating near the star Eta in Aquarius. This shower produces up to 60 meteors per hour DUES BLUES at its peak. The best views are, however, from the southern hemisphere. In the northern hemisphere, the rate can If you have received a “your dues are due” statement reach about 30 meteors per hour. The shower is produced along with the email that brought you this issue of The by dust particles left behind by Comet Halley. The shower OBSERVER, please remit your dues to Mr. Dave Osenga, runs annually from April 19th to May 28th. It peaks this year TCAA Treasurer, 1109 N. Linden St., Normal, IL 61761- on the night of May 6th and the morning of May 7th. The 1471. Dues are currently $25 for seniors (60 years of age waxing gibbous moon will block out many of the fainter and over) and $40 regular.
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