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PazMiniBits FOR AUGUST 2008 ------------------------- John Pazmino NYSkies Astronomy Inc www.nyskies.org nyskies@nyskies.org [PazMiniBits welcomes news about home astronomy and other matters
of concern to home astronomers in and near new York City. Please,
deliberately 'by the numbers', answer the seven W's: Who, What, When,
Where, hoW, Why, and WoW. (OK, so there are EIGHT 'W's.)
[For items from newspapers and magazines, include the name, date,
and town of the publication. Items from the mainstream astronomy
periodicals are well known to readers and are usually out of date for
the next PazMiniBits. For weblinks, please be mindful of restricted-
access sites. Note that some links may be too long for a single 70-
char row of text and may be broken by a copy-paste.
[When reporting observations, please make sure to include
explicitly the observer ID, town or roadmap location of the observing
site, the date and hour and timezone of the observation, general sky
conditions, instruments employed for the observation, sky location
(alt-azm) of the observed target where germane. Don't assume that the
email or web specs has correct values for these parameters. Put the
specific parameters in the very text.
[Items for PazMiniBits could be major club developments, notices of
special meetings, progress or completion of an astronomy project,
observing notes and reports, history comments, alert of impending
unusual celestial activity, invite to attend or participate in public
astronomy programs, useful computer programs and gadget, review of
products and books, summary of major events.
[You may send PazMiniBits items to 'nyskies@nyskies.org', send them
into the NYSkies Yahoogroup, or give them to me at a NYSkies or other
astronomy event. NYSkies may check with other sources to fill in extra
details. PazMiniBits normally passes on your item as a short newsnote,
capturing the critical details from your item.]
= = = = = = = = = = = = = = = = = = = = = = =
NYSkiers and ~120 others filled Explorers Club, UES MH, on 2008
Jun 30. They heard Robert Zommerman discuss history of Hubble Space
Telescope and upcoming repair mission. After talk he had book signing
for his 'The universe in a mirror'.NYSkies supplied space observatory
handots based on Night Sky Netowrk toolkits.
NYS Public Employee Relations Board on 2008 Jul 1 ruled that
Nassau county, LI, can use GPS methods to keep tabs on its workers.
Union grieved use of GPS cell phones and GPS car navigation system to
track where abouts of its members. Board noted that tracking workers
is a management prerogative, like timesheets and spot visits by
supervisors. More oever, cars can be watched for misuse and speeding.
NY Times, 2008 Jun 24, has 'Homecoming of Odysseus may have been
in eclipse' by John WIlford. He reports that certain parts of the
Homer's 'Odyssey' may describe a solar eclipse, based on studies by
Baikouzis and Magnasco. The eclipse may be that of 1178BC Apr 16 over
modern Greece. He includes a lousy sky map for that date and notes
that most litterary experrts debunk the astronomy explanation.
An upload glitch on 2008 Jul 31 loused up NYC Events, 2008 August,
for the dvi.astr.* Internet newsgroups. The issue is in 4 parts,
'1/2', '1/2 do over', '2/2', and 'discussion'. '1/2 do over' replaces
plain '1/2', which may be discarded. The complete one-piece issue is
in the NYSkies website at 'www.nyskies.org/nyc.htm'. If you collect
NYC Events from the newsgrops in its separate parts, you should knit
them together into one file with a text editor like NotePad, The
sequence is '1/2 do over' + '2/2 + 'discussion'. Please then distribute
this new complete issue.
Russia and Space Adventures clarify future use of Soyuz shps for
tourism [PMB 08 Jul]. On the regular flights, ISS crew may occupy all
three seats because there will be no Shuttle or other human vehicle
after2010. The new tourist flights replace the missing seat and add an
additional new one.
International Earth Rotation and Reference Systems Service on 2008
Jul 4 declared that a leapsecond is added to the end of 2008 Dec 31.
The previous leapsecond was at end of 2005 Dec 31. The sequence of the
UTC seconds is:
2008 December 31 23h 59m 59s
2008 December 31 23h 59m 60s <-- the leapsecond
2009 January 1 0h 0m 0s <-- start of Jan 1st
The difference between UTC and TAI is:
from 2006 Jan 1 0h UTC to 2009 Jan 1 0h UTC: UTC-TAI = -33s
from 2009 Jan 1 0h UTC until further notice: UTC-TAI = -34s
China in 2008 Jun revealed that its Shenzhou-7 spacecraft launches
in Oct. It carries 3 taikonauts who will practice spacewalks. Exact
date is not set, but luanch may be televised live. China also passes
up, for now, any human lunar flights to concentrate on its own Rath-
orbiting space station.
NYSkiers, and thusands of other cityfolk, watched the Stonehenge
sunset on 2008 Jul 9, 10, 11. The 8th was cloudy. They viewed from all
over the manh street grid. Sun was brilliant, requiring dark glasses
or quick glances. Some NYSkiers tutoerd passing tourists about the
event and handed out NYSkies flyers. This was the 2nd of each year's
two Stenhenge sunsets, the 1st being in late May [PMB 08 Jun].
Unihedron Co offers free posters for math and physics packed with
details. Pi to 350,390 olaces, epsilon to 350,390 places, first 54,222
Prime Numbers, and Electromagnetic Radiation, DL PDF or JPG images.
Purchase laminated 1/2x2/3m edition for $9.99 + P&P. unihderon.com.
NYC Dept of Parks on 2008 Jul 23 started stabilzing NYS World's
Fair pavilion. It has 3 towers with exterior glass elevators, which
will be taken down for possible refurbishing. It also has floodlights
that during the fair in 1964-65 sprayed the towers and sky with garish
luminous graffiti. Parks Dept noted these will be junked for being
unfit for life in the future.
NYC is well along with new Broadway reconstruction in 2008 Jul
between Times Sq and Herald Sq, Manj. New road has 2 traffic lanes, 2
curb lanes, wider sidewalks ro cyclists and pedestrians, new trees,
benches. Center lanes are open to clear Thanksgiving balloons. Similar
project underway near Madison Sq. completion of both is 2008 late
summer, to sort out road traffic and walk/ride users.
New Scientist, 2008 May May 20, has '16% of US science teachers
are creationists' by by Bob Holmes. He discusses recent surveys of
high school teachers regaerding creationism in schools. He notes that
16% of surveyed teachers believe in the 'young Earth' scenario. Many
teachers still state that creationism is a valid alternate theory to
evolution. The survey distinguished between the curriculum set up in
each school and what is actually carried out in classrooms.
NASA on 2008 Jun 25 reported that its MGS and MRO Mars orbiters
confirmed a gigantic rlliptical basin in Borealis region is an impact
relic. Suspected previously, the crater r3esembles pacific Ocean with
volcanos on its perimeter. Collidng body may be 1,290Km diameter.
US Court of Appeals, Washington DC, on 2008 Jul 11 struck down
Clean Air Interstate rule for managing industrial air pollution. It
found, on challenge by North Carolina, the rule can not be fairly and
consistently applied. It allowed pollutors in 28 states to credit
cleaner air from other states to level out national air quality. US
EPA stopped work under the rule and issued request for replacment. Air
pollution absorbs starlight and exaggerates luminous graffiti.
Father Djokan Majstorovic, St Sava Serbian Christian Church on 2008
Jul 8 explained statues in front of his church. Left pedestal has head
& shoulder figure of Nikola Tesla [PMB 08 Jul]. Right empty pedestal
is for Mikail Pupin. His statue is in yard out of easy view from
street. Church is considering statue for Milutin Milankovitch, but no
plans so far. Church is on 25 St, B'way-6 Av. Madison Sq/Ladies Mile.
US Dept of Transportaton in 2008 Jul 8 commended NYC for being
in the top US cities for bike-friendliness. Burlington VT shared the
honor. It noted that the City laid out 130Km of bike lanes, with 150
more in 2008-09; handed out 12,000 free helmets and 200,000 bike route
maps. Cooming for 2009 are barrier-defined bike lanes in 8 and 9 Avs.
NYS Dept of Parks issued warning on 2008 Jul 9, after complaints
during first major heat storm of summer in early Jul, about extra hot
artificial turf. Unlike grass, synthetic fibers reach ~60C in summer
sunlight, causing discomfort and burns on skin. Sun heats other items,
like benches and playground fixtures, but turf looks like grass, cool
to sit or lie in,
Roskosmos on 2008 Jul 3 signed agrement with Kazakhstan to ahdnle
all debris falling outside baikonur cosmodrome territory. In past,
Soviet Union and russia ignored fragments and fuel that landed over
kazakhstan, causing damage, injury, and health porblems. Agency will
start clearing up 2,500 tons of rocket debris and do medical treatment
and damage repair for residnets.
NYC closes 11Km of Manh streets to road traffic on 2008 Aug 9, 16,
23 07h-13h EDST to create walk/bike route. From Brooklyn Bg, N in
Lafayette St, 4th Av, Park Av S, Park Av, 72nd St, to Central Pk.
Route joins bike paths on Bridge and in Park.
Modern Mechanix, 1934 Jun, has '200 inch telescope' by William
Jennings. It was originaly in the 1934 Jun issue. He describes with
how Corning Glass Works was making the 5m mirror for the Mt Palomar
scope. Replica of article is at www.modernmechanix.com/2008/05/29
NYC ran a bike-share program on 2008 Jul 11-13 in Greenwich Vg-
Union Sq. 4 stores signed out free bikes & helments, returnable at any
of the stores before nightfall. Riders sign waiver and post bond via
credit card. Warm, but humid, weather favored bike riding over bus or
taxi, with ~1,000 signouts.
You don't have to bring your bike to Governors Island or shut down
your bosy systems. Island has a few restrooms, fixed up in former army
buildings, plus in the Battery Marine terminal. On Fridays, free bikes
are signed on the Island, with ~500 used each day.
Two kayakers almost drowned on 2008 Jul 11 near Waterfall at
Brooklyn Bg [PMB 08 Jul]. Vladimer Spector & Bert Rosenblatt paddled
too close to artwork, when they were overturned by currents near the
cascade. NYPD Harbor Patrol took them to NY DT Hospital with minor
injuries. The Waterfalls can not suck in people thru the intake
filters, previously tested with dummies, but they are a new waterway
feature that must be respected.
Heartland America catalog, 2008 Jul, has many handy items for
astronomy. Shipping may be extra, ask when ordering. 800-229-2901,.
www.heartlandamerica.com
Euro-Pro cordless sweeper. Recharegable internal battery, 33cm-wide
sweep, for flat observing fields too far from power mains. $29.99,
#F7-39097.
Strattford Labs film/slide scanner. Transfer 33mm slides and
negative strips to computer files. 5Mp image chi,. USB cable, WinXP &
up. $99.99, #F7-47001
ViaTEK mosquito trap. Lures and captures biting insects over 2,000m2
clear area, AC power, auto-on at night, easy-dump hopper, mimics warm-
blood targets to fool insects. $79.99., #F7-65370.
Savoureux meat grinder for sandwiches, patties, BBQ. Sausage &
cookie accessories, AC power, reversible to clear jams, accepts input
from #F7-65370 above. $59.99, #F7-99307
Croton diamond-decorated wristwatch. 'Manhattan' model, gold &
silver colored, analog hands, wtch battery, water resistent to 30m
depth, date window. $29.99 (lass than from Mnahattan street corner),
#F7-44287
Oreck air purifier. For stuffy clubhouse/observatory. Cleans &
sanitizes air, removes dust, pollen, pet hair, spores, mites,
bacteria. $99.99, #F7-44614.
Dell notebook computer. 20Gb HD, 35cm TFT screen, dialup modem, USB
& PAR ports, NIC, AC & charger, P-III 1Gz, 128Mb RAM, 24X CDD.
$349.99, #F7-79595.
Compaq notebook computer. Similar to #F7-79595 plus SER port, 250Mb
RAM, 30Gb HD, 30X CDD, P-4 1.8Gz. E449.99, #F7-79594.
On-Time audio wristwatch. For dark skies observing. announces time
hourly and with button press, alarm, watch battery, sets from WWV
radio time signals, analog hands. $39.99, #F7-86811.
Westinghouse yard lamps. Hooded against upspray, LEDs, blazed globe,
solar power, auto or manual-on at night, mellow glow, set of 8.
$29.99, #F7-52892.
Westinghouse yard lamps. Same as #F7-52892, but set of 12. $49.99,
#F7-96871.
TEAC CD/DVD duplicator. For cclub promos and handouts. No computer
needed, load with original and stack of blanks. $249.99, #F7-22161.
Hllywood Legends DVD movies. For clouded out observing. 200 shows
from classical era of motion pictures, mix of comedy, action, darama,
romance. CONTAINS NO SEX, VIOLENCE, FOUL CUSSING, suitable for
children. $49.99, #F7-79670
Intex airbed. For hard or dirt ground sleeping. Built in AC power
pump, queen zie, takes fitted sheets, carry sack and shoulder strap,
1-1/2x2m area, 1/2m high. embedded pillow. $59.99, #F7-96908
Victorian fantasy clubhouse model. Build and show off dream for club
HQ. 5 rooms, 60H-25D-40W (cm), plywood parts, furnish rooms with own
model equipment, needs paint and glue. $29.99, #F7-88891.
Supersonic portable HDTV. Fits in totebag, 17.5cm screen, HD, NYSC,
PAL tuners, AC/DC power, 60 channel setting,. $149.99, #F7-35026.
La Crosse weather station. For obsrvatory/clubhouse. Collects all
usual parameters, gives trend and forecast, digital sensors and
readout, atomic time, metric or oldstyle. $99.99, #F7-97078.
Body Champ inversion stand. For prepare for southern hemisphere
starID. Bodies up to 2m tall, metal frame, cushioned bed and joints,
folds for storage, inclination adjusts for declination/latitude zone.
$129.99, #F7-36566.
Watson violin. For clouded out observing. horseehair bow, spruce and
hardwood body, tuning bridge, padded case. $79.99, #72962.
Gyro extreme sport vessel. For starparty fun near lakes. Lie inside
transparent plastic sack, boat tows you thru water, vessel spins and
tumbles, for strong of heart and stomach. $49.99, #F7-76711.
Galileo 30mm f10 Newton reflector. Alt-azm mount, tripod, 20mm ^ 6mm
oculars, finder, software CD, good for kids. $59.99, #F7-65700.
Green Shine compact fluorescent bulbs. Set of 12, 3 7W, 6 13W, 3
19W, for incandescent bulbs in standard sockets. $29.99, #F7-60874.
Natural umbrella. For daytime observing or marking observing site.
3m diam, unobstructed underside, side pole and cantilever, crank
fold/unfold. $99.99, $F7-81487 (gree), #F7-81488 (off white)
Interstate shots were fired in 2008 Jul between New Jersey and
Staten Island. Belmar NJ mayor Pringle on 2008 Jul 4 started diss-out
against SI visitors to his beaches. He called them by rather nasty
names alluding to their Mediterranean heritage and adverse
sanitary/hygene habits. Nabe twon of Bradley Bh NJ countered by
inviting SIers to visit there instead. SI as at mid Jul may send
militia to capture Pringle and exhibit him at SI presidnet's palace.
www.belmarboycott.org
US FAA in 2008 Jul began crash program to recuit new air traffic
controlers for NYC airports. In next 3 years ~1/2 of ATCs can retire,
with no new ones coming on board. Applicants of all ages, litterally,
HS grads thru annuitants. High pay, federal benefits, exciting tasks,
window office, light pollution reward plan, learn as you earn, career
track, indoor setting, work with real airplanes. Jobs at Kennedy,
LaGuardia, Newark. 405-954-4657, 9-AMV-AMH-300@faa.gov.
Excalibur for Windows v2.00 is handy SW with many RPN calculettes.
Switch between sci, phys, conv, biz and keep data intact. Programming,
formula evaluation, graphing, bank memory, facts & figures, high
precision calcs. Requires RPN skill. ~450Kb file fits on stiffy disc.
Free DL at www.geocities.com/dbergis/freeware.htm.
The Concorde SST in Floyd Bennett Field, Bklyn, was rammed on 2008
Jun 30 ~03h EDST by a service truck. The impact tore off the plane's
nose cone while the truck was carrying gear from a soccer game at
Aviation Sports Ctr on the Field. British Airways donated the SST to
Intrepid Museum and is displayed at Field during Museum's renovation.
It is the last Concorde, just reitred from service after flying from
London to JFK, a British Airways model G-BOAD. BA ordered the nose
repaired and the plane removed to Intrepid's pier by YE2008.
Starbucks in 2008 Jul began closing 600 outlets across US. Workers
will be deployed to other nearby units. On Manhattan, Starbucks units
are set up at ~300m intervals along major avenues. The 12 closures, as
at mid Jul, slated for NYC are:
-----------------------------------------------
MH 1675 Broadway | MH 400 Madison Av
MH 1600 Broadway | MH 464 5th Av
MH 340 Madison Av | MH 151 W 34 St (in Macy's)
BK Bay Ridge | QN Douglaston
QN Atlas Park | QN Kew Gardens
SI Graniteville | SI Castleton Corners
---------------------------------------------
NYSkies Astronomy Seminar on 2008 Jul 3 examined asteroid.
Focusing on the main asteroid belt, it discussed dynamic groups,
Kirkwood gaps, earth-threats, and astteroid paths in the sky. On Jul
17 the Seminar explored natural factors in global climate change. It
reviewed Milankovitch Cycles, solar radiation output, biologic and
geologic evidence for climate changes, meteor collisions, and
volcanos. Sweltering hot air on both dates fialed to quench the
enthusiasm of the audience.
Apollo 14 Astronaut Mitchell on 2008 Jul 23 confrimed his belief
in superior beings visiting Earth and being held secret by world
governments. He made his comments in a 9-min phone interview on
Kerrang!, a radio talkshow in Australia. He elaborated on his dealings
with workers at the Roswell UFO crash site, who recovered a human-like
space alien. He later, in other interviews, noted that US Pres Truman,
Ford, Carter, Clinton failed in efforts to release the Roswell case.
US FAA dinally on 2008 Jul 18 issued new safety regs for center
duel tanks on US iarplanes. They require new devices to lessen chance
of ignition or combustion within tank. Planes entering service after
2010 must have device to remove oxygen from air, leaving inert
nitrogen in tank. Current planes must be retrofitted by 2017. Upgrade
costs $92,000 to $311,000 each. Riders may ask airline for status of
specific plane used for their flight. Planes to be fixed:
-----------------------
airplane qty
------------------ ---
Airbus A320 & A330 900
Beoing 777 130
Beoing 767 150
Boeing 757 475
Boeing 747 60
Beoing 737 965
-----------------------
NYC Mayor Bloomberg on 2008 Jul 10 revealed that Nissan, Ford, GM
will produce more hybrid taxis to help City convert its fleet by 2012.
Nissan supplies, starting in late 2008, 200 Altima per month; GM, 50
Chevrolet Malibu; Ford, 50 Ford Escape. There are in 2008 ~13,000 NYC
taxis. 1,300 are hybrids. City regs require new cabs after 2008 Oct 1
to yield 10.6Km/L (9.5L/100Km); 2009 Oct 1. 12.7Km/L (7.9L/100Km).
Hybrids taxis on road now can yield ~15Km/L (~6.5L/100Km).
International Mars Architecture for Teturn of Samples committee on
2008 Jul 9 reported that a mission to bring back 500g[!] of Mars soil
will take $5-8 billion and 10 yrs to carry out. Group also set out 10
features for such a mission:
------------------------------------------------
Mobility - rover, crawler, &c, not just a lander
Longevity - a year or more, with atomic, not solar, power
Agility - navigate over rough terrain, slopes, loose ground
Crater site - to get at subsurface layers
Iteration - to go back to prior places for further study
Hazard avoidance - stay out of potential traps
Manipulation - to move or lift rocks to stufy under them
Ingenuity - using rover tools in unexpected new ways
Imaging - hi compression and cm-level resolution
Humanpower - crew must live on Mars time for many years
-------------------------------------------------------
NASA in 2008 Jul revised its Shuttle schedule for remianing
flights. After craft are reited, US must rely on Russia to commute to
ISS, until Orion-ares system is compelte maybe in 2015.
------------------------------------------
date | flight | shuttle | mission
------------+--------+-----------+-----------------------
2008 Oct 8 | STS125 | Atlantis | Hubblr sservice/repair
2008 Oct 8 | --- | Endeavour | rescue for Hubble mission
2008 Nov 10 | STS126 | Wndwavour | NPLM unit to ISS
2009 Feb 12 | STS119 | Discovery | truss, solar panels to ISS
2009 May 15 | STS127 | Endeavour | Japan Kibo unit to ISS
2009 Jul 30 | STS128 | Atlantis | 2nd MPLM unit to ISS
2009 Oct 15 | STS129 | Discovery | EXPRESS 1 & 2 units to ISS
2009 Dev 10 | STS130 | Endeavour | Node 3 & Cupola to ISS
2010 Feb 11 | STS131 | Atlantis | 3rd MPLM unit to ISS
- - - - early end of Shuttle era - - - -
2010 Apr 8 | STS132 | Discovery | ICc & MRM units to ISS
2010 May 31 | STS131 | Endeavour | EXPRESS 3 ^ 4 units to ISS
2010 XXX XX | STS134 | XXX | AMS unit to ISS
- - - - late end of Shuttle era - - - -
----------------------------------------
Former chairs of US NOAA and USGS proposed on 2008 Jul 4 that the
agencies merge thwie earth observation functions into new Earth
Systems Science Agency. New unit would work with NASA's earth science
dept, which remains as is. It would live under either Dept of Commerce
or Interior, not yet decided. Agency would contiue to use NASA support
and launch services.
Alcyone Ephemeris generates table of events for Sun, Moon, planets
with selectable parameters. Plots graphs, starcharts, sol-sys view,
years -3000 to +3000, Demo ver can't save, print, capture output but
but ScrPrt grabs images. 44MMb[!] file. Free DL at www.alcyone.de.
Planetary, Lunar, Stellar Visibility (PLSV) plots visibility
('undulation') chart for planets, Moon, Sun, stars, Lists events,
siumlates eclipses, plots corscrew chart of Jupiter moons, shows
dynamic telescope views, Years -3000 to +6000. Free at www.alcyone.de.
Michael Shvo inaugurated his Shvo Academy for real estate
marketing on 2008 Jul 10 with a lunar project. It with 8 interns will
concoct a marketing model for a development on the Moon, taking into
account the special features of lunar habitation. Project will be
reviewed by astronomers from Hayden Planetarium, then handed to Gray
Associates advertising firm for 'promotion'.
Port of Authority on 2008 Jul 23 inked deal with St Nicholas Greek
Orthodox Church, crushed by WTC collapse, to rebuild it. It was on
Cedar & West Sts, now needed for a vehicle checkpoint in new WTC. New
site is Greenwich & Liberty Sts on top of PA's new bomb-screening
corral. St Nicholas was last Gk Orthdx Ch to keep Julian calendar,
shifting to Gregorian in mid 1990s. Julian was optional since 1920s
and almost all other churches dropped it quickly.
Pocket PC Central has explanations and tutorials for handhelds,
such as PocketPCs and Smartphones. Good text and illustrations, how-to
for assorted chores and operations, discussing handheld-desktop
interaction, shortcuts and tips. Mostly for Windows devices.
www.pocketpccentral.net.
RapidEye AG, Germany, on 2008 Jul 21 opened conpo to name its new
Earth-monitor satellites. Entrants may donate 10 euros to educate
other countries about xenophobia. This is a reaction by some countries
when foreign satellite fly over them for a look-see. Deadline is Aug
8. www.rapideye.de/launch2008.
NASA and USDA inked deal for USDA to fly agricultural experiments
on ISS after 2010 Shuttle retirement. Shuttles have no room for extra
payload. NASA has similar arrangement for Natl Instt of Health for
biomedical work on ISS. Transport between ISS and ground is not
included.
Virgin Galactic rolled out its WhiteKnightTwo mother plane [PMB 08
Jul] on 2008 Jul 28 at its base in Mojave CA. Plane will now go thru
ground and flight testing before commercial rides begin, maybe in late
2009. SpaceShipTwo rocket plane is under construction for mid 2009
debut. ~250 customers are already signed up for rides. Virgin expects
to fly 500 riders per year by 2011 and perhaps offer point-to-point
flights between its bases in other towns.
Mind well that our web address is 'www.nyskies.org'. There is a
www.nyskies.com website for the personal astronomy activity of an
individual in upstate New York. NYSkies on 2008 Jul 30 asked the site
to note the possible mixup in address and put a link to us.
Part of ongoing delays in IRT Flushing line service comes from
loss of tail tracks at Times Sq terminal. They were in 2008 Mar-Apr
trimmed to 60m length to make room for extending the line westward. At
full length the tracks pop or push two trains during busy hours. Now
trains must leave station only by going back toward Queens.
Nature, 2008 Jul 31, has 'Calendars with Olympiad display and
eclipse prediction on the Antikythera Mechanism' by Dr Tony Freeth &a.
They decipher dials on the Greek instrument [PMB 07 Jun] as a calendar
labeled with Corinthian months. It tracks 12/13-month years and 29/30-
day months. plus years of the Panhellenic Games. Eclipse dial even has
correction for longitude drift of eclipses in each Saros cycle, noting
if the event occurs in local day or night. The machine may be for an
Corinth official who announced the months and Games.
Last update on 05 August 2008 |
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Copyright 2007, NYSkies Astronomy Inc General inquiries: nyskies@nyskies.org |
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