NOVANEWSLETTEROFTHEVANCOUVERCENTRERASC VOLUME2015ISSUE1JANUARYFEBRUARY2015 Bob McDonald: Canadian Spacewalkers 2015 Paul Sykes Memorial Lecture Saturday, January 31 at 8pm with meet-and-greet for RASC members at 7pm Room SWH 10081 at SFU’s Burnaby Campus (see Meetup for a detailed map)

Only three Canadian astronauts, new book, copies of which will be lecture hall from 7:00-7:45pm  Chris Hadfield, Steve MacLean, available after the presentation. and Dave Williams, had the privilege of donning space suits Bob McDonald has been and stepping into the void outside communicating science the International Space Station. internationally through This illustrated presentation tells television, radio, print and their remarkable tales of training live presentations for more for years in the world’s largest than 30 years. He is the swimming pool, the challenges of host of cbc Radio’s Quirks working against a suit that doesn’t & Quarks, the award- want to bend, the disorientation winning science program of weightlessness, performing with a national audience of construction work in a realm where nearly 500,000 people. He up and down do not exist, all while is also a regular reporter floating 400 km above the most for cbc Television’s The spectacular view of the Earth they National as well as Gemini- had ever seen. Meanwhile, this winning host and writer of Earthbound journalist has had the children’s series Head’s the opportunity to get a taste of Up. astronaut training and discovered just how remarkable our three The meet-and-greet for Canadian spacewalkers truly are. members will be held in This is the subject of McDonald’s the atrium adjacent to the

JANUARY 15 SFU FEBRUARY 12 SFU MARCH 11 SFU Vancouver Centre’s own Howard Trot- Dr. Ben Williams of the University of Dr. Rita Mann of the HIA in Victoria on tier: The SFU Observatory: Update and Washington on using the HST to cre- looking for planet formation around What’s Next. Blusson Hall 9660 (see ate a high-resolution mosaic of the protostars in the Orion Nebula. Room map on p. 4) Andromeda Galaxy. BH 9660 BH 9660 (see map on p. 4) Members’ Gallery

The Pelican Nebula (IC5067) by Howard Trottier

I finished processing the above narrowband image of the Pelican nebula (IC5067) over the holidays—although image capture was way back in summer of 2012! I shot 20+ hours in Ha, sii, and oiii filters, and kept the best 17 hours for processing. The field of view is about 3/4 of a degree, at roughly 1” per pixel. The colour-mapping scheme I used corresponds approximately to sii as red, Ha as orange, and oiii as cyan. A blog with more information on the image is here: http://www.sfu.ca/~trottier/Observatory/Blogs/citsoblogbirding.html

2 rasc-vancouver.com JANUARYFEBRUARY2015 President’s Message by Mark Eburne Welcome to 2015. observatory at sfu. Howard has other observatory our centre has, I would like to welcome all the been keeping us in the loop on the the aomo. Alan is making great new members who have joined construction and it looks very close progress in the renovation project us for 2015 and welcome back to seeing first light. rasc has a very and he is getting a lot of hands-on the returning membership. I look close relationship with sfu and support from the membership. One forward to interacting with all you we will have dedicated time at the day in the not to distant future we at the various events this year and observatory. Get your thinking caps will be developing projects for this we have lots going on this year. Of on for projects and activities you observatory as well. course one of the big events is to and centre centre can lead. Council has just completed the able to spend some time at the new We also have good news on the continued on page 4 About RASC The RASC Vancouver Centre meets at the address below. Annual membership are not necessarily those of the Vancouver 7:30 PM on the second Thursday of every includes the invaluable Observer’s Hand- Centre. month at SFU’s Burnaby campus (see map book, six issues of the RASC Journal, and, Material on any aspect of astronomy on page 4). Guests are always welcome. In of course, access to all of the club events should be e-mailed to the editor or mailed addition, the Centre has an observing site and projects. to the address below. where star parties are regularly scheduled. For more information regarding the Remember, you are always welcome Membership is currently $75.00 per Centre and its activities, please contact to attend meetings of Council, held on the year ($43.00 for persons under 21 years our P.R. Director. first Thursday of every month at 7:30pm of age; family memberships also avail- NOVA, the newsletter of the Vancouver in room P8445.2 of the Physics wing of able) and can be obtained online, at a Centre, RASC, is published on odd-num- the Shrum Science Centre at SFU. Please meeting, or by writing to the Treasurer at bered months. Opinions expressed herein contact a council member for directions. 2015 Vancouver Centre Officers President/LPA Mark Eburne Past President/Events Howard Trottier Webmaster Rick Vandenberg [email protected] [email protected] [email protected] Vice-President/Events Suzanne Nagy Dir. of Telescopes Kenneth Lui NOVA Editor Gordon Farrell [email protected] [email protected] [email protected] Secretary/P. R./Observing Scott McGillivray Membership Muguette MacDonald Speakers Barry Shanko [email protected] [email protected] [email protected] Treasurer Bruce Hutchison Education Bill Burnyeat At Large Michael Levy [email protected] [email protected] Adrian Mitescu National Rep. Doug Montgomery AOMO Alan Jones Kyle Dally [email protected] [email protected] Honourary President Dr. John Macdonald Librarian William Fearon Merchandise Leigh Cummings Trustees Pomponia Martines [email protected] [email protected] J. Karl Miller

Library On the Internet Mailing Address The centre has a large library of books, http://rasc-vancouver.com or RASC Vancouver Centre magazines and old NOVAs for your enjoy- http://www.rasc.ca/vancouver PO Box 19115 ment. Please take advantage of this club http://astronomy.meetup.com/131/ 2302 West 4th Ave. service and visit often to check out the new http://www.facebook.com/RASC.Van Vancouver, B.C. purchases. Suggestions for future library @RASCVancouver V6K 4R8 acquisitions are appreciated.

JANUARYFEBRUARY2015 rasc-vancouver.com 3 Map to Meeting Site Our SFU meeting site is in room

st We 9660 (the Mowfaghian Theatre) ive Dr sity of Blusson Hall. After entering er P niv P U Sa ywell B Hall lusson through the east doors, turn right Hall AQ  then take the stairs on the left Lectur e Room down one floor. The theatre is

P T

So o uth w just to your left. Cam e pus r Rd R d Pay parking is available at sev- eral locations located around Burnaby Mtn Pkwy campus (indicated as “P” on the G a g Un la iv r er map). d sity i Dri W ve East a y continued from page 3 out at our events or work behind the it privileges. 2015 planning meeting, an all-day scenes, please let us know. We have As always, 2015 will be an session held last Sunday here at several opportunities to make 2015 outstanding year for astronomy sfu. We have new faces on council an even bigger success for everyone. enthusiasts. Be sure to make time to which always provides new energy As a member in 2015, you will enjoy some or all of the Vancouver and creativity. As a volunteer see more activity geared specifically Centre’s offerings. I encourage you organization, we are very fortunate to you and for the public. We to get connected whichever way you to have a strong group of leaders, hope your interactions will lead can. passionate about what they do you to join the rasc and get even Remember, look up then look and are committed to providing more benefits to help feed your around and share your VIEWS. membership services and public astronomy hunger. Membership has Welcome everyone; clear skies.  outreach activities all year long. Our financial picture is very solid and membership numbers are growing. Our Meetup network is well over 1000 and grows every day, which promotes events like the Paul Sykes Lecture, Astronomy Day and Metro Parks partnered events, including the Perseid Meteor Shower night. The astronomy community is alive and well in Vancouver and area. I would like to recognise all the volunteers that we are lucky to have at the rasc Vancouver Centre. Without the efforts from each of these volunteers, our events would not be as successful. If you are thinking of getting involved, to help cartoon by Dan Collier

4 rasc-vancouver.com JANUARYFEBRUARY2015 2014 RASC-Van Volunteer Appreciation Award by Suzanna Nagy The rasc Vancouver Centre living in Toronto, Karl was slipped on ice and fell, fracturing Volunteer Appreciation Award jointly a member of Toronto and his pelvis. is acknowledgment to an rasc Vancouver centres and became Thankfully, surgery was not member for his/her long-standing active with the National Office required but Karl was wheelchair- commitment to the society, where he was National Treasurer bound and home-bound for a few its administration, events, and for two years. weeks. Despite that, Karl didn’t success. Since returning to Vancouver, miss a council meeting, attending And when I mean long- Karl has remained active in the the meetings via Skype. standing, this year is no exception. rasc, regularly volunteering at It is with great pleasure that This year’s recipient has been a events. rasc Vancouver Centre awards member of the rasc since 1977. In 2005, Karl was asked to accept Karl Miller the 2014 Volunteer The recipient for the 2014 the honorary role of Trustee. The Appreciation Award.  Appreciation Award is J. Karl Trustee is a background role—an Miller. appointed position who is there Karl became interested in solely to ensure that the council astronomy from the time he was a for the Vancouver Centre follows young boy in Germany. His father the rules and procedures of the had astronomy books that Karl society and also to step in should enjoyed reading. While a young any crisis occur. lad in Berlin, Karl was member of Despite the fact that Trustees the local astronomy club. are not expected to take an active Karl came to Canada in 1955. In role in council, Karl has chosen 1965, Karl married his lovely wife to be active and has attended Hilkka. Both Karl and Hilkka all council meeting, lending his became life members of the rasc. past experiences and expertise to In 1986, Karl was President of council activities and decisions. Vancouver Centre. Karl’s love of astronomy was In the late 80’s, Karl was put to the test this year when relocated to Toronto for three in January, Karl and I attended years with his work for the a winter Boy Scout camp on Hudson’s Bay Company. While Seymour Mountain where Karl

Membership has its Privileges! New members, did you know? The can now reserve two different telescopes tive! Take in the club meetings; engage Vancouver Centre has several telescopes per year and use what is left at the end of other members with questions; come out available for loan free of charge! We have the meeting anytime. to observing sessions (also known as “star telescopes ranging from 60mm to 10” in Your greatest opportunity as a member parties”), and, by all means, volunteer to diameter. For more information see the of the RASC is to take advantage of the take part in our many public events. Director of Telescopes after the mem- company of other enthusiasts to increase For the usual observing sites and bers meeting. The loaner period is for your knowledge, enjoyment and skill in times, visit our website at http://rasc-van- one month, to be returned after the next astronomy. couver.com/observing-sites/ or contact meeting. Telescopes are not allowed to The best thing you can do to gain the the Observing Chair at observing@rasc- circulate outside of these meetings. You most from your membership is to get ac- vancouver.com.

JANUARYFEBRUARY2015 rasc-vancouver.com 5 Upcoming Events January July September 31 – Paul Sykes lecture at SFU (see 1-5 – RASC General Assembly in Halifax Sept. 11 - 19 – Merritt Star Quest front page for details) August December May 8 - 16 – Mt. Kobau Star Party 10 – AGM 9 – Astronomy Day at SFU

Two Dog Nights: Visions of the Nearest Stars by Bill Burnyeat Winter stars turn into view, low, went with his dog down to remains in his river bank amid Orion and his dogs take the a quiet river bank. Standing on the frothing Milky Way. stage. Sirius, the leader of Canis the bank of this literal Eridanus, Sometimes, we hear rumours Major, shoots darts of coloured he undressed and stepped in. to the contrary. From time to rays through time stars are cold, black air. said to leave Tonight, the their spot. bright Moon The most sails high, famous is drowning Vega, called the glamour the Weaver of faint stars Maiden in but hardly the Far East. extinguishing In July, this Sirius. Even star flies on blanketed by magic birds a bit of haze across the blown in Milky Way from the sea, to meet her Sirius, the husband, the Dog Star, still Ox Herder dominates the (Altair). Of scene. The course, this Moon will is a mythical hurry away. flight, The Dog although it Star stays in was widely its place, brightest of the fixed The heaviness that he felt turned thought the star did cross the stars. It can’t leave home but, him to a rock and he sank out of sky. If rain fell on the appointed like a faithful dog, sits steady sight of a world he was so mad as day, it was the Maid’s tears upon at its spot amid the flights and to try to master. A day later, the learning her trip was prevented travails going on all around it. dog was discovered by the police, or delayed. It recalls another faithful dog. still sitting next to the vacant Does the Dog Star wander? This fellow, an Orion brought pile of clothes. Sirius, faithful, continued on page 7

6 rasc-vancouver.com JANUARYFEBRUARY2015 Observing Comet Lovejoy C/2014 Q2 by Scott McGillivray We’re kicking off 2015 with the binocular Comet Lovejoy C/2014 Q2. Lovejoy crossed the celestial equator on January 9th, heading toward Polaris in an orbit perpendicular to the plane of the solar system. Lovejoy is expected to peak at magnitude 4.5 in early January, however Vancouver’s best observing comes later in January with a new moon while the comet climbs higher in our sky. Lovejoy has been easily visible as a binocular object from the southern hemisphere since late 2014. A few of the keenest eyes in the darkest skies have managed a naked-eye sighting. In early January, look for Lovejoy low on the south horizon a few degrees right of Rigel. The comet’s path will bring it near the Pleiades around January 20 and close to Algol in the first week of February. a double feature for Vancouver Lovejoy and a triple eclipse on Weather pending, January 23 is astronomers with Comet Jupiter.  continued from page 6 sky to where he sits as Procyon the Milky Way to observers “of Tonight I am carefully scanning in the smaller dog. The luckless the Stone Age” about 60,000 an issue of the magazine bride, for the marriage is not years ago represents a tradition Observatory. I am somewhat voluntary, is the star Gomeisa from that long ago. Evidence for behind in my reading, so, it’s the (it means to weep) and refers to this remarkable theory comes issue for October 1903. the third magnitude star at the from the curious fact that both The magazine reports that other end of the short stick of Procyon and Sirius have a very according to an old tradition stars making the constellation of high proper motion. Sirius from the near east, both Sirius Canis Minor. Similar stories are continued on page 8 and Procyon have fled across told of the greater Dog Star. the Milky Way. One story tells The correspondent in the Classified Ads of Suhail, the adventurer who Observatory, J. Ellard Gore, in a Free for the taking: All rasc Jour- snatches a sister from amongst letter from Dublin dated Sept. 8, nal issues from Dec. 1998 through feminine stars in Orion and then 1903, suggests that Sirius having Oct. 2006. Interested parties please runs with his bride across the been on the opposite side of contact Phil at [email protected]

JANUARYFEBRUARY2015 rasc-vancouver.com 7 continued from page 7 founded on runaway stars dating a small disk with a bright edge moves 1.3 arcseconds per year from the Stone Age span times ringing it. The colour appears in a direction that would have that are impossibly long. Here a dull grey, like the colour of placed it on the opposite side the time frame is impossibly the eye, but like the grey of the (eastern) of the Milky Way short. human eye it is tinged with a very 60,000 years ago. Procyon, Changes in stars come subtle tint (like a hint) of green. with proper motion of 1.25 over huge amounts of time, I would call it greyish green. arcseconds per year, at that time particularly in main sequence I try the same technique with sat in Cancer and thus both dog stars and it seems clear (unless Procyon. Again, a grey disk but stars have drifted steadily west we are very mixed up about this time tinged with a very pale during this huge period of time. something) that stars can’t yellow. This star is an F5 while Although this seems a mere change in this way over a paltry the greater dog is A0. Since the creeping, remember that both few thousand years. A clue to greater dog is hotter, this makes stars are amongst the closest the solution of the “red Sirius sense but it is an impression and to the sun and therefore these controversy” comes from early not any kind of measurement. motions are large compared Chinese records which never call Since colour viewed by eye is a to most stars. It seems hard to this star red. The issue is one of subjective impression, there is envision that a tale of wandering culture and not cosmology. In the really no right and wrong in this stars could have been engendered the tradition of Greek and later and any impression is really just at that time and survived. Yet, it writers of the classical period, as valid as any other. is not impossible. A more telling the dog was associated with heat In 1973, Patrick Moore, host critique is made by considering and its mouth was depicted as of the British television show how anyone so long ago could blazing hot. Those bitten by a The Sky at Night, asked viewers have located the stars on an dog were sure to suffer burns as to watch Sirius and to send in accurate grid and subsequent well as puncture marks. It is a reports of colour. Over 5000 observers take note of tiny reference to the dog’s hot mouth responded and the results are changes over tens of thousands that makes classical writers use tabulated below: of years. This seems hard to red as an adjective describing swallow. the star. This is related to the Bluish or bluish white 50% We have been misled before by so-called dog days of summer, a White 23% the tricky Dog Stars. In ancient time of maximum heat. It’s not All colours 14% journals and in the works of the perception of a red colour Greenish 9% the playwright, Seneca, Sirius but a reference to one of the Yellowish 2% is called reddish in colour. This properties of being “doggy.” It Orange 2% error is repeated in a few other means to be red hot. Red 0% works by early Greeks and These speculations led me Romans and led to a wild goose to wonder what colour Sirius As you can see, my personal chase of speculations attempting appears to an observer. pick, green, was the selection of to explain it. Some suggested Standing outside, I spot Sirius comparatively few. that either the Dog Star itself attempting to hide between the Most who saw all colours or its white dwarf companion drooping boughs of a tall fir laboured under the effects of might have been a red giant star tree. Finding a spot in the clear, bad seeing; at least this is what 2000 years ago and shone like I watch the star in a small pair of Patrick concluded. Not one Betelgeuse or Antares. We have binoculars, then throw the image modern British observer saw seen that the adventure stories out of focus so Sirius appears as Sirius as red. 

8 rasc-vancouver.com JANUARYFEBRUARY2015 What do Draco and the State of Maryland Have in Common? by David A. Rodger The constellation Draco I think that’s where the If the instrument spins towards the dragon frustrates me. I do problem lies. Draco doesn’t me, I need to get out of the most of my observing from occupy a cohesive block of sky. way. With Draco, this can be a north-facing patio at my If I ask you to point out Perseus a real hazard, especially if you North Vancouver townhouse in November, you know to guess that ngc 6543 is low in complex. Sometimes I find look northeastward. Where’s the north and, in fact, it turns this restrictive, since I can’t the Big Dipper in March? out to be high in the west. see anything south of the That’s easy—it’s overhead. Okay, enough with the equatorial region of the sky Can you find Messier 103 in excuses! What’s there to look at because our building blocks the Cassiopeia? If it’s May, look in this famous but bewildering south. However, I’ve learned to to the northwest. But if I constellation? I’ve already compensate. I’ve spent many suggest you find an object in mentioned ngc 6543 (Cat’s happy hours exploring Ursa Draco tonight, where would Eye) and I do so again because Major, Ursa Minor, Cassiopeia, you point your telescope? It it’s arguably one of the finest Perseus, Cepheus and even could be overhead, or in the planetaries in the northern faint Camelopardalis and northwest, the northeast or sky. It’s bright, circular and Lynx. Yet, with the exception near the northern horizon. The shows considerable structure, of its stunning planetary twisted, sprawling territory of especially if you have a large nebula ngc 6543 (“The Cat’s Draco can be in all those places aperture telescope and an oiii Eye”), the north circumpolar at the same time! If you’ve filter. constellation Draco is mostly ever looked at the convoluted Does Draco have a Messier terra incognito to me. boundaries of the US state object? Apparently it does, Why is that? of Maryland, especially although the designation I think it has to do with where it gets compressed of the galaxy ngc 5866 Draco’s unusual position between Pennsylvania and (“The Spindle”) as M 102, in the sky and its territorial West Virginia, Draco is its remains controversial. Some boundaries. Sure, there are astronomical equivalent. people believe that Messier other “lanky” constellations. This, then, is why I tend accidentally counted the Hydra the water snake comes to ignore Draco when I’m nearby galaxy M 101 twice! to mind. It encompasses more preparing my lists of double Just for fun, I entered “M territory than any other of the stars and deep-sky objects to 102” on my 10-inch reflector’s 88 constellations, as it unlocks seek out on a clear night. I’m remote control to see where its starry coils in an east-west probably being unfair to Draco it would take me. It took me pattern across some seven since I have GoTo systems on to ngc 5866. Well, if Sky- hours of right ascension (over my telescopes and could easily Watcher says ngc 5866 is M 100 degrees) in the springtime locate objects, wherever they 102, who am I to argue? M evening sky. Even so, you need are. But even with GoTo, I like 102 is close to the star Edasich only look south in March and to anticipate the direction and (Iota Draconis). April to find the water snake. angle to which the motorized Draco also boasts some I challenge you to point to telescope will be heading attractive double stars of which Draco. before I press the “go” button. continued on page 10

JANUARYFEBRUARY2015 rasc-vancouver.com 9 continued from page 9 the ancient Egyptians built has carried the pole, now Rastaban (Beta Draconis), some of the first pyramids pointed to an even brighter Arrakis (Mu Draconis), 16/17 nearly 5,000 years ago, Thuban star, Polaris.  Draconis and 40/41 stand out. was the closest bright star David A. Rodger, who served Finally, don’t overlook the to the north celestial pole. as President of the Vancouver star Thuban, located in the It gives one quite a sense of Centre in the early 1970s, has very narrowest part of this time to realize just how far the been observing the sky for nearly winding constellation. When Precession of the Equinoxes 60 years.

Comet Lovejoy (C/2014 Q2)

Using Scott’s article on page 7 as a guide, I took the above image of Comet Lovejoy (just right of centre) on the night of Tuesday, 13 January from my balcony in Kitsilano. The unguided 8-second exposure may be a slightly streaked, but it does show the comet’s blue-green hue and lack of a dust tail (but long exposures show the blue-white ion tail and just a hint of a dust tail beginning to form). Shot using a Canon 40D at iso 1600 through a 200 mm lens. The inset shows an enlarged view of the comet. – Gordon Farrell

10 rasc-vancouver.com JANUARYFEBRUARY2015 Members’ Gallery

Partial Solar Eclipse (left) and Sunspots (right) by Hormoz Djahanshahi Images of the partial solar eclipse of Oct. 24, 2014 and the giant sunspot AR 2192 taken three days later. These images were taken through tripod-mounted 20x80mm binoculars with inexpensive plastic filters using a Canon PowerShot G12 camera handheld in front on one eyepiece.

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