NYC EVENTS FOR APRIL 2020 ------------------------ John Pazmino NYSkies Astronomy In+c email@example.com The following astronomy activities in the commuting ring enclosing New York City are operated by various organizations. A few cultural tems of special importance to City astronomers are also included. Altho NYC Events confirms the listed items, they are subject to change by their sponsors. Check with their contacts. Let the sponsor know that you learned of its event thru NYC Events. Frequently asked questions and explanation of NYC Events is at 'www.nyskies.org/nyc-faq.htm'. You may ask for previous NYC Events thru 'firstname.lastname@example.org' because only the current issue is in the website. It is replaced by next month's issue. For events which missed NYC Events, check the NYSkies Yahoogroup forum. Join NYSkies by visiting 'www.nyskies.org/yahoo.htm' and picking either the email or website option. All hours are Eastern Daylight Savings Time (UT - 4h). Coronavirus --------- Starting in early March 2020 the NYSkies region suffered round after round of event cancellations, suspensions, postponements to defend against diffusion of coronavirus. The events are not limited to astronomy. They cover all aspects of life: recreation, entertainment, dining, sports, education, cultural, more. Home astronomy was drasticly curtailed because clubs typicly meet in facilities that closed doors on their own motion or by direction from civil authorities. From March 20 to 23, NY, then NJ and CT, imposed 'stay-home' orders to shut down all remaining events. This essentially closed home astronomy activity that were bypassed in earlier facility closures. NYC Events adds a new category '!!!' to flag affected events. It's at the bottom of the 'Events skipped ...' section. Please inquire at these events's contact for updates on their status. Bear in mind that most are under instructions rom their host venues or civil authorities. They may have no means to reactivate on their own. General notes ----------- / 'whole City' means the event has no specific or dedicated place. It may be enjoyed from the whole NYSkies territory or at a number of individual places. Celestial events are typicly 'whole City' events. 'all day' means the event is continuous or repeating during the open hours of the host facility. Facilities may have limited hours per day or days per week. Check with the event contacts. 'adv regn reqd', for 'advance registration required/requested' means that the event requires or requests signing up before the event. You must have your ticket in hand at the gate. There could be a deadline some days before the event, after which no more signups are accepted. Check with the event contact for specifics. Prices cited are the 'rack rate'. You could qualify for discounts as may be offered by the sponsor. Besides the base price there may be noptional extra fees to consider. Current Month calendar -------------------- Plain dates are in current month; -, previous month; +, next month. #, NYSkies Astronomy Seminar Moon phase: .NM., .FQ), (FM), (LQ. Sunset is noted for each Saturday --------------------------------- Sun Mon Tue Wed Thu Fri Sat sunset --- --- --- --- --- --- --- ------ -29 -30 -31 .1) 2 3# 4 19:25 5 6 (7) 8 9 10 11 19:32 12 13 (14. 15 16 17# 18 19:39 19 20 21 .22. 23 24 25 19:47 26 277 28 29 .30) +1# +2 19:54 ---------------------------------------------- Index of Events / ------------- * = NASA-JPL Night Sky Network affiliate date = entry in 'list of events' section 0' = entry in 'ongoing and continuing events' section 'AUT'= entry in 'skipped, autumn resumption' section 'SPR' = entry in 'skipped, spring resumption' secrion '???' = entry in 'skipped, uncertain resumption' seciton, '!!!' = entry in 'skipped, suspended due to coronavirus ------- ----------------------------------------------- BROOKLYN - BK Astronomy on Tap - - - - !!! Canarsie line curtailment 0 *Floyd Bennett Field - - - !!! Secret Science Club - - - !!! CONNECTICUT - CT *A S of Gtr Hartford - - !!! Astro Soc of Greenwich - !!! *Astro Soc of New Haven - !!! Bowman Observatory - - - !!! *Litchfield Hills AAC mtg !!! *Litchfield Hills lecture !!! *McCarthy Observatory - - !!! New Pond Farm - - - - - - !!! Stamford Observatory - - !!! *Van Vleck Obsy (ASGH) - !!! Van Vleck Obsy (WU) - - - !!! Western CT St Univ Obsy - !!! *Westport Astro Soc mtg - !!! *Westport Astro Soc starvg !!! ------------------------- Boothe Meml Astro Soc - 203-377-9933, www.facebook.com/Boothe-Memorial-Astronomical-Society LONG ISLAND - LI *Amateur Observers Soc - - !!! *Amat Obsrs Soc starviewing!!! Amer Instt Aero & Astro - !!! Astro Soc of Long Island !!! Brookhaven National Lab - !!! Custer Institute - - - - !!! Hofstra Univ Obsy - - - !!! Hmaptons Observatory - - !!! PubSci - - - - - - - - - !!! SUNY Stony Brook - - - - !!! *Susan Rose Observatory - !!! MANHATTAN - MH *Amat Astro Assn starvwg - !!! *Amat Astro Assn lecture - !!! Amer Instt Archarology - !!! Amer Musm Natl Hist - - - !!! asteroid 1998-OR2 - - - - 1-30 Canarsie line curtailment 0 Ctr for Atmosp Ocean Sci !!! Ctr for Science & Society !!! Central Pk (Great Lawn) - !!! *Columbia Univ Obsy - - - !!! comet 2019-Y4 - - - - - - 1-30 coronavirus pandemic - - 0 Earth Day fair - - - - - !!! Earth Institute - - - - - !!! GC Presents - - - - - - - !!! Globe at Night - - - - - 14-23 Hayden Plm 'Frontiers' - !!! Hayden Plm 'Live!' - - - !!! Instt Stud Ancnt World - !!! Intrepid Museum - - - - - !!! *Inwood Astronomy Project !!! Jupiter Joe's Astronomy - !!! Natl Musm of Mathematics !!! NYC-H2O - - - - - - - - - !!! New York Map Society - - !!! NYU Astrop & Relatvty - - !!! *NYSkies Astronomy Seminar !!! omega Centauri challenge 1-May 31 SciCafe' - - - - - - - - !!! Simons Foundation - - - - !!! SpaceX NYC - - - - - - - !!! *Top of the Laawn - - - - !!! Urban Park Rangers - - - !!! WTC station closings - -- 0 ------------------------------- Ctr for Space Sci Edu - - email@example.com, www.nyccsse.org, 212-608-6164 n METRO-NORTH - NY Bear Mountain - - - - - - !!! Lamont-Doherty Obsy - - - !!! Mid-Hudson Astro Assn - - !!! Northeast Astronomy form !!! Rockland Astro Club - - - !!! Vassar College Obsy - - - !!! Ward Pound Ridge - - - - !!! Westchester Amat Astro - !!! NEW JERSEY - NJ A A A of Princeton - - - !!! *Amat Astro Inc meeting - !!! *Amat Astro Inc lecture - !!! A S of Toms Rv Area - - - !!! McDowell Observatory - - !!! Morris Musm Astro Soc - - !!! New Jersey Astro Assn - - !!! North Bergen Viaduct - - 0 No Jersey Astro Gp mtg - !!! No Jersey Astro Gp starvg !!! Peyton Observarory - - - !!! Plasma Physics Lab - - - !!! Rutgers Univ Astro Collqm !!! Rutgers Univ Astro Semnr !!! *S*T*A*R - - - - - - - - - !!! Schommer Observatory - - !!! *Sheep Hill Astro Assn - - !!! *Sheep Hill Observatory - !!! *Utd Astro Clubs of NJ - - !!! Washington Xing St Pk - - !!! WTC station closings - - 0 ----------------------------- Dark Sky Observers - www.users.nac.net/gburke/club Montclair Telescope Club - 973-948-5284,, users.erols.com/njastro/orgs/mtc.htm NW Jersey Amat Astro - www.nwjaa.org, firstname.lastname@example.org Passaic Co Astro Assn - www.users.nac.net/gburke/PCAA, 973-523-0024 *Raritan Vy Co Coll Plm - www2.raritanval.edu/planetarium Skyland Stargazers - skylandstargazers.tripod.com QUEENS - QN 'Science on Screen' - - !!! 'Space Odyssey' exhibit - !!! York College Observatory !!! REST OF WORLD STATEN ISLAND - SI Coll of Staten Is Obsy - !!! Great Kills Park - - - - !!! Staten Is Community TV - !!! THE BRONX - BX ============================= Ongoing and continuing events -------------------------- all day - whole City - MH - coronavirus pandemic indef duration. Coronavirus spread rapidly thruout genral population in march with ovr 800 cases in NYC by mid march 2020. Massive cancellations, suspensions, postponements of events; closings of schools, colleges, stores, malls, sport arenae, restaurants. Vulnerable people are those for saeasonal flu and lung illness. Consult medical provider for specific concerns and treatment. all day - H&M WTC line - MH - WTC station closings Thru late 2020. World Trade Center station closes every weekend to repair tunnels under Hudson River ruined by hurricane Sandy. Station closes at 00h on each Saturday, reopens at 05h on following Monday. WTC-bound trains turn at Exchange Pl station. For service to WTC, use 33 St line to connect to NYC subways. www.panynj.gov all day - H&M WTC line - NJ - WTC station closings Thru late 2020. World Trade Center station closes every weekend to repair tunnels under Hudson River ruined by hurricane Sandy. Station closes at 00h on each Saturday, reopens at 05h on following Monday. WTC-bound trains turn at Exchange Pl station. For service to WTC, use 33 St line to connect to NYC subways. www.panynj.gov all day - North Brgen Viaduct - NJ - road closings and rebuild Thru end 2020. One lane in each direction is closed during major rebuild of viaduct on NJ495 between NJ Tpk and Lincoln Tnl. Buses have priority on remaining lanes. On-off ramps for local street close from time to time. www.restorenj495.com all day - Canarsie line - MH - night and weekend slowdown Thru mid 2020. Curtailed service 20h to 05h daily and 20h Fri-05h Mon on weekends. Trains run single-track thru one tunnel between Bedford Av statio aand 8th Av terminal. Round- trip takes about 20 minutes. Other track and tunnel are closed. Service may change according as progress of work. Normal two-way service runs 05h-20h on weekdays. www.mta.info. all day - Canarsie line - BK - night and weekend slowdown Thru mid 2020. Curtailed service 20h to 05h daily and 20h Fri-05h Mon on weekends. Trains run single-track thru one tunnel between Bedford Av statio aand 8th Av terminal. Round- trip takes about 20 minutes. Other track and tunnel are closed. Service may change according as progress of work. Normal two-way service runs 05h-20h on weekdays. www.mta.info. List of Events ------------ Wed 1 Apr all day - whole City - MH - asteroid 1998-OR2 flyby Thru April 30. Asteroid 1998-OR2, #52768, flies by to Earth on April 29, 0.04 AU, ~6 million km. 10-20 km estd diam. App magn at proximity ~8.8. Path from Gem, Cnc, Hya, Crt, Cen, to south horizon. proximity is low in south, requiring extra observing skills and cler sky. Orbit elements from JPL ----------------------------------------------------------------- --- epoch | 2020 may 31.0 || inclination | 5.86588 deg excenty | 0.57308 || lon asc node | 27.01547 deg semimaj axis | 2.38444 AU || arg perih | 174.56620 deg mean anomy | 12.10139 deg || perihelion | 1.01595 AU perih date | 2020 Aor 15.7926 || mean motn | 0.26769 deg/day period | 1344.85808 day || apohelion | 3.75902 AU Tesserand-J | 3.286 | orbit prox | 0.015438 AU ------------------------------------------------------------ all dau - whole City - MH - bright comet 2019-Y4 thru April 30. Bright comet 2019-Y4 (ATLAS) is binocular, maybe bare-eye, target. Path from UMa, Lyn Cam, Per, Tau, to west twilight. Perihelion comes in daylight. Orbit elements from JPL -------------------------------------------------------- epoch | 2020 May 31.0 || excenty 0.99925 semimaj axis | 334.74376 AU || perihelion 2.52851 AU inclination | 45.38174 deg || asc node | 120.57000 deg arg perih | 177.40786 deg || mean anomy | 359..98133 deg perih date | 2020 May 31.0151 || peeriod | 2237006.0761 day mean motn | 0.00016 deg/day || apohelion | 669.23467 AU Tesserand-J | 0.453 || orbit prox | 0.63109 AU --------------------------------------------------------- 00:00 - whole City - MH - omega Centauri challenge Thru 31 May. When cluster ome Cen, NGC5128, is on meridian it's about 1 deg alt, yet is observable from within NYC. Requires good observing skills, dark sky, clear horizon. www.nyskies.org/articles/pazmino/51285139.htm. Tue 14 Apr 20:30 - whole CIty - MH - Globe at Night exercise Thru April 23. NYSkies runs its own Globe at Night exercise in 2019-2020 while Orion is in sky at nighfall. Same method and procedure as for prior years for documenting sky transparency over City. Details at www.nyskies.org/gannyc.htm Events Skipped This Month ----------------------- EVENT MAY RESUME AT DIFFERENT PLACE OR HOUR; INQUIRE AT CONTACT -------------------------------------- -------------------------------------- [SPR] SPRING RESUMPTION OF ACTIVITY -------------------------------------- -------------------------------------- [???] UNCERTAIN RESUMPTION OF ACTIVITY -------------------------------------- ------------------------------------------------------- [!!! SUSPENDED DUE TO CORONAVIRUS; UNCERTAIN RESUMPTION -------------------------------------------------------- all day - whole City - MH - clearsky starviewing VARIOUS PLACES, DATES, HOURS; INQUIRE AT CONTACT Amat Astro Assn. Sessions convene in parks usually at dusk. Occasional daytime sunviewing. Free. Cancelled for clouds. email@example.com, 718-522-5014, www.aaa.org all day - Musm Moving Imnage - QN - '2oo1:' exhinit Thru Jul 18. 36-01 35 Av (Astoria). '2001: A space odyssey'. Props, customes, models, A/V sorts, ephemridalia, posters. Certain days show '2001: A space odyssey' film. $15 adm, $25 adm +film. www.novingimage.us, 718-777-6888. all day - Amer Musm Natl Hist - MH - 'Nature of color' exhibit Thru 2021 august. 4th floor. Explore light, wavelength, vision, pigments, radiation, sprctra. $28 adm & exh. 212769-5100, www.ammh.org/exhibitions/color all day - whole City - MH - cultural tour VARIOUS LOCATIONS AND TIMES; INQUIRE AT CONTACT NYC-H2O. Walk, bike, ride thru history and culture of NYC muwater system facilities and natural waterways in and near the City. Events are pay orfree, adn regn reqd. Bike tours need own bike. www.nych2o.org, firstname.lastname@example.org all day - whole island - LI - clearsky starviewing VARIOUS PLACES, DATES, HOURS; INQUIRE AT CONTACT Amat Obsrs Soc. Sessions convene in parks usually at dusk. Occasional daytime sunviewing. Free. Cancelled for clouds. www.aosny.org, email@example.com all day - whole City - MH - clearsky starviewing VARIOUS PLACES, DATES, HOURS; INQUIRE AT CONTACT Jupiter Joe's Sidewalk Astronomy. Sessions convene in parks usually at dusk. Occasional daytime sunviewing. Free. ` Cancelled for clouds. www.jupiterjoesastronomy.org, firstname.lastname@example.org all day - whole City - MH - cultural tours & lectures VARIOUS PLACES, DATES, HOURS; INQUIRE AT CONTACT Urban Park Rangers. Tours of parks, landmarks, nabes, hoods. Lectures on history and culture of NYC. Program varies each month. Free. www.nyc.gov/parks ===== 09:00 - Suffern - NY - Northeast Astronomy Forum VISIT THE NYSkies BOOTH Thru Sun 5 Apr. Rockland Astro Club. SUNY Rockland Coll. Vendors, dealers, exhibits, demos, talks, food service. $27 = 1-day, $46 2-day. www.rocklandastronomy.com = = = = = 10:00 - Princeton - NJ - science tour Plasma Physics Lab. Walk thru history and culture of fproject to capture energy from controled hydrogen fusion. Free, adv regn reqd. Have GI photo ID for campus security. www.pppl.gov/events = = = = = 10:30 - Piscataway - NJ - astronomy lecture Colloquium series. Rutgers Univ, Busch Campus, Astro & Phys Lecture Hall. Free. www.physics.rutgers.edu/colloquium, 732-445-3974+ = = = = = 12:00 - Union Square - MH - Earth Day exhibition VISIT THE NYSkirs BOOTH North flank of park. Exhibit booths in tent city, music, performnaces, demos, crafts, takeaways, food service. Fre. www.earthdayinitiative.org = = = = = 13:15 - Uniondale - LI - Amat Obsrs Soc meeting. Hofstra Univ, Berliner Hall. Free. www.aosny.org, email@example.com = = = = = 13:30 - Piscataway - NJ - astronomy lecture Seminar series. Rutgers Univ, Serin W330. Free. 732-445-3974, www.physics.rutgers.edu/ast/seminar = = = = = 14:00 - Avenues HQ - MH - New York Map Society lecture 11 E 26 St, 17th floor. Various topics about map making, cartography, geography. Free, adv regn reqd. Have GI photo ID for caampus security. www.newyorkmapsociety.org, firstname.lastname@example.org 14:00 - New York University - MH - astronomy lecture 726 Broadway, Rm 940. Various topics in astrophys and relativity. Free. Have GI photo ID for campus security. physics.nyu.edu/events.htm = = = = = 15:30 - Greenwich - CT - Astro Soc of Greenwich meeting Greenwich Audubon Center. Free. email@example.com, 203-415-6762. astrogreenwich.org 15:30 - Courant Institute - MH - science lecture Ctr for Atmosp & Ocean Studies. Weaver Hall, 251 Mercer St. Various topics in geophysics and earth science. Free. caos.cims.nyu.edu, firstname.lastname@example.org 15:30 - Upton - LI - Summer Sundays science show Brookhaven Natl Lab. Small seminar room. 'What is the Higgs boson hiding?'. Free, have GI photo ID for campussecurity. 631- 344-2651, www.bnl.gov/evnts = = = = = 16:00 - Natl Musm of Mathematics - MH - science show Also 19:00. 'Mathematical Encounters'. Free, adv regn reqd. 212-542-0566, www.momath.org, email@example.com = = = = = 16:15 - Simons Foundation - MH - scinece lecture 160 5 Av & 21 St. 'The quest for the ideal glass'. Tea 16:15, lecture 17:00. Free, adv regn reqd. 646-654-0066, ww.simonsfoundation.org = = = = = 17:00 - Danbury - CT - astronomy lecture Westn Conn St Uv, Obsy/Plm. Indoor planetarium show, clearsky starviewing. Free. www.wcsu.edu/starwatch, 203-837-8671, firstname.lastname@example.org 17:30 - Intrepid Museum - MH - Free Friday show Pier 86 and ship. Exhibits, demos, talks. Clearsky movies and starviewing. Free. www.intrepidmuseum.org = = = = = 18:00 - Earth Institute - MH - science lecture Columbnia Univ, Lerner Hall, Arledge Audm.. 'Sea level rise: Causes, impacts and options for solutions'. Free, adv regn reqd. ei.columbia.edu 18:00 - Inst Stud Anc World - MH - cultural lecruee 15 E 84 St, 5/Madison Av. Various topics on history and culture of ancient societies. Free, adv regn reqd. isaw..nyu.edu, email@example.com, 212-992-7800 18:00 - Bethpage - LI - Amer Instt Aero & Astro lecture Hofstra Univ, Breslin Hall, rm216 . Various topics in aeronautics and astronautics. 'Observations from the Apollo LM to the Shuttlre and ISS, and beyond'. Free, $7 opt pizza-soda, adv regn reqd.718-812-2727, firstname.lastname@example.org 18:00 - Shalel Lounge - MH - SpaceX NYC meeting 65 W 70 St, Amsterdam Av. Fiscussion on space industry and development. Free, opt meal/drink. www.meetup.com/SpaceX-NYC 18;00 - Musm Moving Imnage - QN - 'Science on screen' cinema 36-01 35 Av (Astoria). 'Women on the Moon'. $15. www.novingimage.us, 718-777-6888. 18:00 - Palisades - NY - science lecture Lamont-Doherty Earth Obsy, Monell audm. 'Climate, carbon ``` ` dioxide, and sea level: Past is prologue'. Free, 845-365-8634, www.ldeo.columbia.edu, 845-365-8988 18:00 - Amagansett - LI - astronomy lecture Montauk Obsy. Amagansett Library. Indoor talk, clearsky sunviewing. Free. www.montaukobservatory.com 18:00 - Columbia University- MH - Ctr for Sci and Soc lecture Fauerweather Hsll, Rm 513. 'The triumph of scientific imagination, 1760-1900'. Free, adv regn reqd. 212-854-7211, scienceandsociety.columbia.edu = = = = = 18:15 - Amer Musm Natl Hist - MH - Amat Astro Assn lecture Kaufmann Theater. Free, no musm adm fee. 718-522-5014, email@example.com, www.aaa.org = = = = = 18:30 - Hunter College - MH - Amer Instt Archaeolgy lecture Hemmerdinger Screening Room. Various topics on archaeology and anthropology. Free, adv regn reqd. GI photo ID required for campus security. www.aia-nysociety.org, firstname.lastname@example.org 18:30 - CUNY Graduate Center - MH -'GC presents' lecture 365 5 Av & 34 St. 'Climate change:The effects on coastal environments''. Free, adv regn reqd. 212-817-7000, www.gc.cuny.edu/publicprograms = = = = = 19:00 - Toms River - NJ - Astro Soc of Toms Rv Area meeting Ocean Co Coll, Novins Planetarium. Free. www.astra-nj.org, 732-255-0343, email@example.com 19:00 - lyndhurst - NJ - clearsky starviewing Ctr for Enviro & Sci Edu, McDowell Obsy. Free. cancelled for clouds. Requires climbing narrow spiral stairs into domw. www.njsea.com/observatory, firstname.lastname@example.org, 201-460-1700 19:00 - Patchoque - LI- PubSci show Brookhaven Natl Lab, Blue Point Brewing Co, 225 W Main St. 'The quantum revolution'. Free, opt meal/drink. email@example.com,vwww.bnl.gov/pubsci, 19:00 - Uniondale - LI - clearsky starviewing Hofstra University,Berliner Bdg, Rm 117. Free, adv regn reqd. Cancelled for clouds. 516-463-2759, www.hofstra.edu/Academics, firstname.lastname@example.org 19:00 - Hayden Planetarium - MH - 'Astronomy live!' lecture Live narrated planetarium show. Enter at 81 St/Cntl Pk W. $15, adv regn reqd. 212-769-5100, www.amnh.org/programs 19:00 - Hayden Planetarium - MH - 'Frontiers' lecture Kayfnamm Thtr. Enter at 81 St/Cntl Pk W. $15, adv regn reqd. 212-769-5100, www.amnh.org/programs 19:00 - West Reading - CT - clearsky starviewing New Pond Farm, obseratory. $10, adv regn reqd. cancelled for clouds. www.newpondfarm.org, 203-938-2117 19:00 - Amer Musm Natl Hist - MH - SciCafe' show Hall of Ocean Life or hall of planet Earth. Music, drinks, chat with Museum scientists. Free, be 21 or be gone. GI photo ID reqd. 212-769-5100, www.amnh.org/programs = = = = = 19:15 - Lk Taghkanic St Pk - NY - clearsky starviewing Mid-Hudson Astro Assn. West Beach parking lot. Free, cancelled for clouds. Adv regn reqd with vehicle make, model, plate number for park security. ` www.nidhudsonastronomy.org = = = = = 19:30 - Boonton - NJ - Sheep Hill Astro Assn meeting Boonton Senior Ctr. Free. www.sheephillastro.org, email@example.com, firstname.lastname@example.org 19:30 - Princeton - NJ - Amat Astro Assn of Princeton meeting Princeton U, Peyton Hall. Free. www.princetonastronomy.org, 609-737-2575, email@example.com 19:30 - Torrington - CT - Litchfield Hills Amat Astro Club mtg Central Congregational Church. Free. lhastro.org, firstname.lastname@example.org 19:30 - Staten Is Community TV - SI - science show 100 Cable Way, Mariners Hr SI. 'Geology forum' Live audience, seating at 19:30, on air at 20:00. Free. www.sictv.org, 718-727-1414 19:30 - Morristown - NJ - Morris Museum Astro Soc meeting Morris Museum. Free. 973-386-1848, 973-386-1848,, www.morrismuseum.org/astro-society, email@example.com, firstname.lastname@example.org 19:30 - Suffern - NY - RRockland Astronomy club meeting Rockalnd Commty Coll, main bldg. Free. www.rocklandastronomy.com 19:30 - Stony Brook - LI - astronomy lecture SUNY Stony Brook, Earth & Spc Sci Hall. Indoor lecture, clearsky starviewing. Free. www.ess.sunysb.edu/astro, 631-632-8100, email@example.com 19:30 - Pleasantville - NY - Westchester Amat Astro meeting Pace Univ, Lienhard Hall, Free. www.westchesterastronomers.org, firstname.lastname@example.org Sat 8 Feb 19:30 - Cranford - NJ - Amat Astro Inc meeting Union Co Coll, Sperry Obsy. Indoor talk, clearsky starviewing. Free. www.asterism.org 19:30 - New Brittain - CT - Astro Soc of Gtr Hartford meeting Central CT St Univ, Copernicus Plm. Free. www.asgh.org, 860-872-9069, email@example.com 19:30 - New Haven - CT - Astro Soc of New Haven meetinG Yale Univ, Leitner Family Obsy. Indoor talk, clearsky starviewing. Free. www.asnh.org, firstname.lastname@example.org = = = = = 20:00 - Litchfield - CT - Litchfield Hills A A C lecture White Meml Consrvn Ctr. Free. Indoor lecture, clearsky starviewing. email@example.com, lhastro.org 20:00 - Inwood Hill Park - MH cleasky starviewing OCCASIONAL EXTRA SESSIONS; INQUIRE AT CONTACT Inwood Astronomy Project. Meet at park entrance, Seaman Av & Isham St. Free. Cancelled for clouds. 917-529-2359 www.inwoodastronomy.org, firstname.lastname@example.org 20:00 - Floyd Bennett Field - BK - clearsky starviewing Community Garden. NYSKies & Natl Park Svc. Free. Cancelled for clouds. www.nyskies.org, email@example.com, firstname.lastname@example.org 20:00 - Boonton - NJ - clearsky starviewing Sheep Hill Astro Assn Obsy, Free. Cancelled for clouds. sheephillastro.otg, email@example.com, firstname.lastname@example.org 20:00 - Greenwich - CT - clearsky starviewing Astro Soc of Greenwich. Curtis Elem Schl, Bowman Obsy. Free. Cancelled for clouds. email@example.com, 203-415-6762. , astrogreenwich.org 20:00 - Princeton - NJ - clearsky starviewing Princeton Univ, Peyton Hall. Free. Cancelled for clouds www.astro.princeton.edu/observatory/publicobserving.php, firstname.lastname@example.org, email@example.com 20:00 - Columbia University - MH - astronomy lecture Pupin Hall, signs to lecture room. Indoor lecture, clearsky starviewing. Free. firstname.lastname@example.org, www.astro.columbia.edu/outreach, 212-854-3278 20:00 - Coll of Staten Is - SI - clearsky starviewing Astrophys Obsy. Free, cancelled for clouds. 718-982-2818, csivc.csi.cuny.edu/supernove7/files/home.html, 718-892-3259, email@example.com 20:00 - Middletown - CT - clearsky starviewing Astro Soc of Gtr Hartford, Wesleyan U, Van Vleck Obsy. Free. cancelled for clouds. www.asgh.org, 860-872-9069, firstname.lastname@example.org 20:00 - Westport - CT - Westport Astro Soc meeting Rolnick Obsy. Free. www.was-ct.org, 203-227-0925 20:00 - Westport - CT - clearsky starviewing Westport Astro Soc. Rolnick Obsy. Free. Cancelled for clouds. www.was-ct.org, 203-227-0925 20:00 - Lincroft - NJ - S*T*A*R meeting Brookdale Commty Coll, Mommouth Museum. Free. www.starastronomy.org, email@example.com 20:00 - Centerport - LI - Astro Soc of LI meeting Vanderbilt Plm. Free. firstname.lastname@example.org, www.asliclub.org 20:00 - Jenny Jump St Forest - NJ - Utd A C of NJ mtg UACNJ Obsy. Indoor talk, clearsky starviewing. Free. www.uacnj.org 20:00 - York College - QN - astronomy lecture . Core Academic Bdg, Rm AC-2E01. Indoor lecture, clearsky starviewing. Free, adv regn reqd. 718-262-2082, www.york.cuny.edu/centers-institutes/observatory, 20:00 - Cranford - NJ - Amat Astro Inc lecture Union Co Coll, Smith Audm. Indoor talk, clearsky starviewing. Free. www.asterism.org 20;00 - Wash'n X'ing - NJ - clearsky starviewing Amat Astro Assn of Princeton. Simpson Obsy. Free, cancelled for clouds. www.princetonastronomy.org, 609-737-2575, email@example.com 20:00 - Ward Pound Ridge - NY - clearsky starviewing Westchester Amat Astro. Meadows Picnic Area. Free. Cancelled for clouds. firstname.lastname@example.org www.westchesterastronomers.org, 20:00 - Way Station Pub - BK - Astronomy on Tap meting 683 Washington Av & Prospect Pl (Prospect Hts). Informal astronomy discussion in pub setting. Free, one drink purchase reqd. astronomyontap.org/locatons/new-york-city 19:30 - Great Kills Pk - SI - clearsky starviewing Natl Pk Svc. Enter at Hylan Bv to playground; Free. Cancelled for clouds. www.nps.gov/gate, 718-987-6790 n 20:00 - Bear Mountain - NY - clearsky starviewing Rockland Astro Club. Anthony Wayne Rec Area, picnic field. Free, cancelled for clouds. www.rocklandastronomy.com 20:00 - Southold - LI - Custer Institute meeting OCCASIONAL EXTRA EVENTS; INQUIRE AT CONTACT Custer Instt. Indoor program, clearsky starviewing. $5-$15. Varies with program. www.custerobservatory.org, email@example.com, 631-765-2626 20:00 - Susan Rose Obsy - LI - clearsky starviewing Amat Obsrs Soc. capus of Custer Institt. Sessions concurrent with Custer's own events. Free, cancelled for clouds. www.aosny.org, firstname.lastname@example.org 20:00 - Upper Montclair - NJ - clearsky starviewing No Jersey Astro Gp. Montclair St Univ, Richardson Hall. Free, cancelled for clouds. njastro.org, 973-655-7266 20:00 - Upper Montclair - NJ - No Jersey Astro Gp meeting Montclair St Univ, Richardson Hall, Room 232. Free. njastro.org, 973-655-7266 jjj 20:00 - Central Park - MH - clearsky starviewing PLUS OCCASIONAL EXTRA SESSIONS; INQUIRE AT CONTACT Top of the Lawn. North path of Great Lawn. Free. Cancelled for clouds. email@example.com, www.nyskies.org, firstname.lastname@example.org 20:00 - Bell House - BK - Secret Science Club meeting OCCASIONAL SESSIONS; INQUIRE AT CONTACT 149 7 St, 2/3 Av. Lecture and music on various science topics. Free. secretscienceclub.blogspot.com, 718-638-4400, 20:00 - Stamford - CT - astronomy lecture Stamford Obsy. $5. Indoor lecture, clearsky starviewing. starviewing also called off for outdoor temp < -6C. 203-322-6537, www.stamfordmuseum.org email@example.com 20:00 - New Milford - CT - astronomy lecture McCarthy Obsy, New Miford HS. Indoor lecture, clearsky starviewing. Free. www.mccarthyobservatory.org, 860-354-1595, firstname.lastname@example.org 20:00 - Middletown - CT - clearsky starviewing MEETS ONLY DURING CLASSES; INQUIRE AT CONTACT Wesleyan U, Van Vleck Obsy. Free, cancelled for clouds. 860-685-3664, www.wesleyan.edu/astro/events = = = = = 20:30 - Voorhees St Pk - NJ - NJ Astro Assn meeting NJAA-HQ, Robinson Obsy. Indoor lecture, clearsky starviewing. Free. www.njaa.org, 908-368-8500 20:30 - Piscataway - NJ - clearsky starviewng Rutgers Univ, Schommer Obsy. Free. Cancelled for clouds. 732-205-0020, www.physics.rutgers.edu/ast/ast-serin.html email@example.com = = = = = 21:00 - Poughkeepsie - NY - clearsky starviewing MEETS ONLY DURING CLASSES; INQUIRE AT CONTACT Vassar College, Observatory. Free. Cancelled for clouds. physicsandastronomy.vassar.edu/observatory.html, General news ---------- This April 2020 NYC Events shows the catastrophic collapse of home astronomy in the NYSkies region precipitated by concerns about the /coronavirus. Starting in early March, event after event was called off for the rest of March and later. At first here were occasional cancellations but the pace ramped up rapidly during the month. Most home astronomy events were shut down when their host venue closed the premises. NYSkies cancelled its march 20 Seminar when host McBurney House closed on March 16 due to cornnavirus. In some cases the host closing was part of a general civil order to suspend large gatherings, like meetings, lectures, exhibitions, starviewings. On March 20 NYS Gov Cuomo put out a stay-home order. All remAining open public activities, businesses, gatherings thruout the state must close down. Certain businesses with survival products and services are exempt. order went into force on the 23ed but most stores and services were closing sown during rest of the 20th. NJ Gov Murphy on March 21 ordered all nonessential operations and gatherings in state to cease. Order took effect on March 22. Events bypassed by earlier restrictions were then closed down. CT Gov Lamonr ordered on March 22 all nonessential operations and gatherings in state to cease. Order took effect on the 23rd. All previously scheduled events were closed. I dropped the entry for the measles epidemic. it seems to be under control and is now totally supplanted by the coronavirus pandemic. City News ------- On March 1 NYC Dept of Health reported first known NYC case of Coronavirus. A manhattan woman returning from health service in Iran developed the disease and is confined to her home for the duration. She is under general virus treatment and, as at early March, is recovering. many airlines on March 1 posted flight restrictions to cities and countries with significant coronavirus cases.Discuss with your airline for alternate plans if you were going to infected places. First death in NYC associated with coronavirus reported on March 14. Un-IDed 82YO woman went to hospital for other medical conditions and was found to have the virus. By March 27 NYC recorded about 25,000 coronavirus cases with about 250 deaths. Mortality rate is quite 1% due to better reporting and testing of virus patients and is consistent with previous flu-ike infections. Both cases and deaths are expected to continue rising in April. On Mar 7 NYS Gov Cuomo declared state of emergency, letting for coronavirus. This lets state/local agencies impose rules to combat the disease without normal review and approval process. NY State on March 9 became the most coronavirus-infected state in US when cases grew to 1,30. Most are in NYSkies region! Fatality rate subsided, likely from public awareness and quicker medical treatment. The United Nations closed its Manhattan campus on March 10 from coronavirus. All assemblies, meetings, conferences, visitor services, tours are called off. UN delegates and staff conduct business remotely by telcomms with restrained face-to-face dialog. Pavilions remain softly illuminated at night but all gates are locked. NYskies Astronomy Seminar on mar 6 examined blackbody radiation. We learned how duCahtelet found common features of light and heat in 1740s and how Fraunhofer sketched a brightness profile for the Sun's spectrum. We saw early efforts to explain radiation from heated objects. The specimina were sooted over to remove surface effects, giving the term 'blackbody'. There was no success under 1880s-1890s physics. Planck in 1900 developed the quantum theory that fully described blackbody radiation and binded energy, wavelength, and frequency together. As industry and science explored various zones of radiation, preference for one or an other parameter grew. We today use that from legacy, career, habit. Optical radiation is usually worked in wavelength, radio waves in frequency, UV and x-ray in energy. We saw that in everyday life we experience quantization with electricity. Altho we use electricity as a bulk or mass flow of energy, we know it is a flow of electrons. The energy flow is the 'strength' of electricity times the electricity current, (energy/electron) * ( electron/second). Planck explained the blackbody radiation as (energy/quantum)*(quantum/second). He added in functions of temperature and wavelength to properly duplicate the blackbody energy profile. We compared the sun and star energy profile with blackbody curves, seeing that these objects radiate from their temperature. The realization that temperature is the driving force of a star's radiant energy firmed up the spectral classes in the alphabet sequence 'OBAFGKM', from hot to cool. We saw in star spectra how the line structure changed with temperature. Each temperature excite star's atoms to yield sets of line indicative of that temperature. We learned that Planck radiation comes with two simple formulae, Wien and stefan- Boltzmann. The former relates the wavelength of maximum energy, the crest or peak of the radiation profile, to temperature. This method works for stars with clean profiles, not cut up with spectral lines. The latter relates the total energy from a blackbody with temperature. This is a strong power function such that hotter object radiate more strongly than cooler ones. From the S-B formula we learned how to estimate the size of stars. We stepped thru the procedure. From the star distance and received illumination we work out the emitted limination by the inverse square law. From he spectrum, thru its lines or blackbody profile, we get the temperature. Putting the radiation and temperature in the S-B formula yields the surface area of the star Area is the square of the radius or diameter. We checked this with an HR Diagram. Stars in the lower left are hot but dim. These have small areas to radiate little energy and are the 'dwarf' stars. stars in the upper right are cool but brilliant. They put out little energy and need large area to produce the high luminance. These stars are large, 'giants' and 'supergiants'/ We examined illustrations of dwarfs and giants and one of Betelgeuse. That star, by direct imaging, is about as big as the orbit of Jupiter! We winded down with pictures of various blackbody objects, such as humans and planet Earth, and the cosmic microwave radiation. This is the first radiation to travel thru space after the bigbang and is almost a precisely perfect blackbody. it started around 300,000 years after the bigbang with 3,000K temperature. On its way to Earth for 13 billion years it was stretched with Hubble expansion to the 3K we observe today. We looked at a major booboo in astronomy. We observe almost entirely in optical wavelengths, yet stars send out energy in all wavelengths. We compensate for this missing energy with a bolometric correction or fluff factor. But we routinely apply the radiation formulae to just the iptical portion of the blackbody profile. We saw how blackbody curves are unique for each temperature such that knowing any two points on one fixes its temperature. We do this by imaging the source in a blue and visual band and comparing the two reading with standard Planck profiles to get the source temperature. Takeawys were fistorical illustrations of radiation, Planck quantum formula, blackbody formulae, example blackbody profiles, sample spectra, skeleton HRD, illustrations of star size, color index and bolometric correction diagram, example blackbody radiation sources. NYC Sci & Rngg fair on mar 8 was decimated by superimposed causes.. About half of fair crew, Citi Field staff, judges were absent from coronavirus concerns, missing start of Daylight Savings Time, closure of field's train station for track work. Many students missed fair because their schools were closed from virus infection. Judges were assigned up to ten projects to cover the shortfall. Public viewing of exhibits was cancelled on the spot. NYSkies Astronomy Seminar for March 20 was cancelled because McBurney House, where we meet, shut down on march 16 for coronavirus concerns. Topic was a preview of the spring stars over the City. This can be handled in April if meetings are resumed then. Sky News ------ March 2020 was a poorer month for stargazing with most nights clouded or hazed over. Globe at Night, mar 14-24 recorded mostly cloudy skies. This frustrated GaN observers who wanted to capture effect of coronavirus closings on sky transparency. On the few clear nights many observers did note the sky was darker with more dim stars. Several observers noticed the Moon on Feb 29 looked ragged. Outer edge of her crescent was smooth and round, being the limb. Inner edge, terminator, by eye was rough. Binoculars revealed terminator had seemingly extra relief than normal. Recent comet 2019-Y4, ATLAS, may be a bright eVening comet in April. It is in high sky at nightfall, then rounds perihelion on May 31 in daylight. It'll be a binocular feature and perhaps rising into bare-eye view. See April 1st. Earth Hour in NYSkies was clouded out. Some parts of region had light rain. Observers noted that, on the clouds, there were no hotspots over nearby business/retail districts! Outdoor lighting was already drasticly reduced by the stay-home orders of NY, NJ, CT, with little practical further reduction. Some observers got their first good sight of Mars in predawn of March 18. He was in convention with Jupiter and Moon. On days before and after the 18th Jupiter and mars were in conjunction with Moon well away from them. Due to erratic cloudy weather most observers got just one view. Asteroid 1998-OR2, #52768, passes close to Earth on April 29 at ~6 million km near its opposition. Altho some asteroid flybys occur in April 2020 this one is by a extra large rock. Diameter is 10-20 km diameter. 52768 stays dim, requiring good observing skill and mid- size scope. Proximity occurs when asteroid is leaving view beyond south horizon. See April 1. During the stay-home period in NYSkies observers remarked on the absence of glow-domes above nearby retail/business districts. When stores and offices were shut down, they turned off most of their outdoor lighting. On the few clear nights the sky had substantially more stars than normal for the same weather conditions. NYSkiers missed the First Crescent of Nisaan on March 25. Sky was cloudy. 14 days later, Nisan 15, is Full Moon and Passover. Easter is the Sunday after this Full Moon, April 12.