Casual Astronomy, Spaceflight News and Lower California Weather

Photo Op July 15 (see blog entry)

Posted by: LowerCal, 22:40 GMT le 26 février 2012

+10

CURRENT MOON

moon phases

CURRENT PLANETS and brilliant stars in early July. Directions and times are for the northern subtropics and vary somewhat for other latitudes.
• Bright & golden Mercury is close to the western horizon at dusk, sets WNW after dark.
• Bright & orange Mars is SW at dusk, sets west near midnight.
• Bright & yellowish Saturn is SSW at dusk, sets west after midnight and is
accompanied very closely by the bright and blueish star Spica.
• Very brilliant off-white Jupiter rises ENE predawn, is low east late dawn.
• Extremely brilliant white Venus rises ENE predawn, is low east before sunrise and is
accompanied very closely by the bright and orange star Aldebaran.
• Brilliant & blueish star Sirius will rise before the Sun late July.
• Brilliant white star Canopus will peek above the horizon before the Sun around late August.

Scroll past the links below to find special events for current and future dates.
Scroll farther to find past events.

***** Links *****

Today - SpaceWeather.com
also EarthSky,
Astronomy Picture of the Day,
Lunar Photo of the Day,
365 Days of Astronomy
& Bad Astronomy | Discover Magazine
This Week - SkyandTelescope.com - This Week's Sky at a Glance
also Jack Horkheimer - Star Gazer, Current Scripts
This Month - SkyandTelescope.com - Sky Tour Podcasts
also HubbleSite - Tonight's Sky: Your guide to constellations, deep sky objects, planets, and events
Anytime - Stellarium (free planetarium for your computer)
also Sky & Telescope Interactive Sky Chart (online planetarium)

Visible Satellites:
Simplest - Satellite Flybys by SpaceweatherPhone.com
More satellites and more info - Heavens-Above.com.

Launches:
Spaceflight Now - Worldwide Launch Schedule
also Vandenberg AFB Launch Schedule
& Wallops Flight Facility Launch Webcast & Blog
Reentries - Center for Orbital and Reentry Debris Studies - Upcoming & Recent Reentries

Live Aurora Cams:
Sodankyla, Finland,
Kiruna, Sweden,
Jokkmokk, Sweden (cam 4),
Jokkmokk, Sweden (cam 5),
Abisko, Sweden,
Reykiavik, Iceland,
Yellowknife, Canada (click on CONNECT AURORAMAX LIVE),
& Poker Flat, Alaska

Most events described below can be viewed with your eyes alone.
Occasionally simple binoculars will improve the view and that will be noted.

***** Current & Future Events *****

Photo Op - Crescent & Morning "Stars"

Image created with Stellarium, a free download.

July 15 before Dawn
ENE before dawn the bright & orange star Aldebaran and the ">" shaped Hyades star cluster will be visible close to extremely brilliant white planet Venus. The tiny dipper shaped Pleiades star cluster will be visible well above very brilliant off-white Jupiter.

Even in the very bright dawn shortly before sunrise the thin crescent moon, Venus and Jupiter will still be visible.

Events earlier than those listed below will be found in previous blog entries.

***** Past Events *****

Moon Rides with Jupiter (& Jupiter's Moons)

WunderPhoto: Jupiter, Venus and the crescent moon....Day 2 by rds817 — Sunday February 26, 2012

February 26 after Sunset
A crescent moon will travel beside the brilliant off-white planet Jupiter. Below them is the brilliant white planet Venus. Jupiter and Venus will appear very close March 12 & 13.

As the sky darkens through binoculars as many as four of Jupiter's largest moons can be seen.

Interactive Animation of Jupiter's Moons - Current, Past and Future

Jupiter & Venus' Cozy Evenings

WunderPhoto: Jupiter & Venus from the Front Yard by phnielsen — Monday March 12, 2012

March 12 & 13 after Sunset
Brilliant off-white planet Jupiter travels close to even more brilliant white planet Venus.

As the sky darkens through binoculars as many as four of Jupiter's largest moons can be seen.

Interactive Animation of Jupiter's Moons - Current, Past and Future

Virginia Nightlight Cloud Launches

Milky white tracer clouds from a prior mission.
Credit: Miguel Larsen/Clemson Univ

Mission: Anomalous Transport Rocket Experiment (ATREX)
Launch Vehicle: Terrier-Improved Malemute
Launch from Wallops Flight Facility, Virgina
March 23
12:00-3:00am EDT
March 25
morning
March 27
~~12:00-5:00am EDT~~
2:00-5:00am EDT

".... where the rockets may be visible while the motors are burning ...."
Credit: NASA/Wallops

".... the projected area in which the chemical tracers released from the rockets may be visible ...."
Credit: NASA/Wallops

The Anomalous Transport Rocket Experiment (ATREX) will study the 200-300mph ultra-high level jet stream at the edge of space 60-65 miles above the Earth's surface. For details on the mission see
NASA - NASA Jet Stream Study Will Light up The Night Sky.

Crescent & Planets PhotoOps
(and beautiful binocular & naked eye views too.)

March 24-27 after Sunset
There will be good photo opportunities with the crescent moon in the western sky. (See the series of images just below.) Total darkness comes about 1½ hours after sunset. Between half an hour to an hour after sunset are some nice twilight skies. You can step outside any evening starting now, see the brilliant planets Jupiter and Venus, get an idea of lighting at various times and take some test shots.

After dark the two star clusters closest to Earth are easily seen above Jupiter and Venus. To the naked eye the Pleiades cluster appears as a tiny white dipper shaped pattern of stars standing above brilliant white Venus. The Hyades cluster appears farther above as a larger V-shaped pattern of stars with the bright and orangeish star Aldebaran at one corner. Binocular views of these star clusters are spectacular.

Crescent Moon, Venus & Jupiter - March 24, 2012 45 min. after Sunset

Crescent Moon, Venus & Jupiter - March 25, 2012 45 min. after Sunset

Crescent Moon, Venus & Jupiter - March 26, 2012 45 min. after Sunset

Crescent Moon, Venus & Jupiter - March 27, 2012 45 min. after Sunset

Images created with Stellarium, a free download.

Vandenberg Delta IV Launch

Photo credit: USAF/Airman 1st Class Lael Huss

Mission: National Reconnaissance Office Launch 25 (NROL-25)
Launch Vehicle: Delta IV Medium+ (5,2)
Launch from Vandenberg AFB, California
March 29
2230-(March 30)0015 GMT
6:30-8:15pm EDT
3:30-5:15pm PDT (local time).
March 30
2238-(March 31)0023 GMT
6:38-8:23pm EDT
3:38-5:23pm PDT (local time).
April 2
2304-? GMT
7:04pm-? EDT
4:04pm-? PDT (local time).
April 3
2312-? GMT
7:12pm-? EDT
4:12pm-? PDT (local time).

The smoke column produced by two solid rocket boosters will be easily visible for this afternoon launch.

Launch status updates are at
Spaceflight Now | Tracking Station | Worldwide launch schedule.

More details and updates appear on a launch blog at
Spaceflight Now | Delta Launch Report | Mission Status Center.

You can find a live launch webcast at
United Launch Alliance.

Annular Solar Eclipse

Photo Credit: sancho_panza
May 20
Partial begins: 2056 GMT
Annular begins: 2206 GMT
May 21
Annular ending: 0139 GMT
Partial ending: 0249 GMT

A VERY IMPORTANT NOTE ABOUT VIEWING THE ECLIPSE:
"....no matter what, do not use "filters" such as smoked glass, stacked sunglasses, polarized filters, camera filters, candy wrappers, or compact discs. They might reduce the Sun's glare, but enough harmful radiation can sneak through to damage your eyes. Only use materials specifically manufactured for safe solar viewing, or #14 arcwelders glass."

That quote is from Safely View the Upcoming Eclipse and Transit - Observing Highlights - SkyandTelescope.com which gives directions for additional methods for viewing the Sun such as projecting an image, etc.

Map credit: Eclipse Predictions by Fred Espenak, NASA's GSFC
For a explanation of all the lines and terms on the map see
NASA - Key to Solar Eclipse Maps.

See a zoomable and clickable NASA - Annular Solar Eclipse Map that will show specific times and amount of Sun eclipsed for any locations you select.

Some phase of the eclipse will be visible for most of North America before or during sunset. The path of annularity (where the Sun will appear as a "ring of fire" arround the Moon) is at least 150 miles wide. The path of annularity makes landfall at the California-Oregon border and continues into NW Texas. See the general visibility map for North America.

Cape Canaveral Falcon 9 Launch

Photo credit: NASA/Tony Gray and Kevin O'Connell

Mission: Commercial Orbital Transportation Services (COTS) Demo Flight 2
Spacecraft: Dragon C2+
Launch Vehicle: Falcon 9
Launch from Cape Canaveral AFS, Florida
May 19
0855 GMT
4:55am EDT (local time)
1:55am PDT.
no earlier than (NET)
May 22
0744 GMT
3:44am EDT (local time)
12:44am PDT.

Berthing at the International Space Station (ISS)
May 22
1505 GMT
11:05am EDT
8:05am PDT.

Departure from ISS
May 31
1000 GMT
6:00am EDT
3:00am PDT

Deorbit burn
May 31
1451 GMT
10:51am EDT
7:51am PDT

Splashdown west of central Baja California
May 31
1542 GMT
11:42am EDT
8:42am PDT (local time)

If all the ambitious mission goals are met the SpaceX Dragon capsule will be the first private commercial spacecraft to deliver cargo to the International Space Station (ISS) and it will also return cargo to Earth.

Launch status updates are at
Spaceflight Now | Tracking Station | Worldwide launch schedule.

More details and updates appear on a launch blog at
Spaceflight Now | Dragon Mission Report | Mission Status Center.

You can find a live pre-launch and launch broadcasts at
NASA TV via cable, satellite or internet and
SpaceX.

Partial Lunar Eclipse

WunderPhoto: Lunar Eclipse by jajayy

June 4
Partial eclipse begins 1000 GMT
Partial eclipse ending 1206 GMT

Map credit: F. Espenak, NASA’s GSFC

The partial lunar eclipse will be in progress at moonset/sunrise for all but the most eastern and northern area of the Americas. The entire eclipse sequence will be visible from nearly all the Pacific Ocean including eastern Australia and eastern Indonesia. The partial lunar eclipse will be significantly in progress at moonsrise/sunset for the most eastern areas of the Asia.

Transit of Venus (across the Sun)

Photo credit: Jan Herold

June 5/6
First contact
2209 GMT
6:09 EDT
3:09 PDT

Final contact
0449 GMT

Map credit: Fred Espenak, NASAs GSFC

The transit of Venus will be visible on June 5 until sunset for the 48 states. Alaska and Hawaii will be able to observe the entire transit. Starting west of the International Date Line (IDL) the transit will be visible on June 6. Farther west the transit will be in progress at sunrise.

You can find timetables for major cities at 2012 Transit of Venus - Cities.

A VERY IMPORTANT NOTE ABOUT VIEWING THE TRANSIT:
"....no matter what, do not use "filters" such as smoked glass, stacked sunglasses, polarized filters, camera filters, candy wrappers, or compact discs. They might reduce the Sun's glare, but enough harmful radiation can sneak through to damage your eyes. Only use materials specifically manufactured for safe solar viewing, or #14 arcwelders glass."

That quote is from Safely View the Upcoming Eclipse and Transit - Observing Highlights - SkyandTelescope.com which gives directions for additional methods for viewing the Sun such as projecting an image, etc.

I was able to buy a pair of eclipse shades like this...

... for $1 at a local camera & telescope store.

JPL Open House

June 9 & 10
9AM - 4PM

The annual Open House at NASA's Jet Propulsion Laboratory in Pasadena, Calif., welcomes over 38,000 visitors. This year's theme is "Great Journeys," inviting visitors to share in the wonders of space through high-definition and 3-D videos, live demonstrations, interactions with scientists and engineers, and a first look at JPL's new Earth Science Center.

Find directions and other vital info at Open House - NASA Jet Propulsion Laboratory.

Cape Canaveral Atlas V Launch

Image credit: NASA/JPL/KSC/Lockheed Martin Space Systems

Mission: National Reconnaissance Office Launch 38 (NROL-38)
Launch Vehicle: Atlas V 401
Launch from Cape Canaveral AFS, Florida
June 20
1228-1327 GMT
8:28-9:27am EDT (local time)
5:28-6:27am PDT.

With no smoke producing solid rocket boosters the launch vehicle will rise on a bright flame with a long barely visible tail. A condensation trail may form at higher altitude.

You can find status updates and launch coverage at
Spaceflight Now | Atlas Launch Report | Mission Status Center.

You can find more information and a live webcast starting a 8:08am EDT on launch day at
United Launch Alliance.

Skinny Moon & Mercury - 20 June 20 min. after Sunset looking WNW

Image created with Stellarium, a free download.

Binoculars can help you find both or just offer another interesting view if you can find them with your eyes alone.

Skinny Moon & Planet Mercury - 21 June 20 min. after Sunset looking WNW

Image created with Stellarium, a free download.

The crescent moon should be more obvious this evening but binoculars still might be needed find Mercury 20 minutes after sunset. Binoculars will also give an improved view of the craters and mountains in the Moon's thin crescent.

By about 45 minutes after sunset Mercury should be obvious to the right of the thin crescent. The pair will make a nice photo op against a twilight sky with silhouettes on the horizon below.

Cape Canaveral Delta IV Launch

Image credit: US Air Force

Mission: National Reconnaissance Office Launch 15 (NROL-15)
Launch Vehicle: Delta IV Heavy
Launch from Cape Canaveral AFS, Florida
June 28
Target
1016 GMT
6:16am EDT (local time)
3:16am PDT,
June 29
Target
1013 GMT
6:13am EDT (local time)
3:13am PDT,

Window?
0930-1430 GMT
5:30-10:30am EDT (local time)
2:30-7:30am PDT.

The beginning of the previously announced launch window is early dawn. The Delta IV Heavy configuration uses two additional first stage engines as strap on boosters. The three RS-68 liquid hydrogen-oxygen engines create long orange flames and water vapor exhaust that shows up as a heavy condensation trail.

The announced target time of launch is about 10 minutes before sunrise. This could result in a condensation trail that rises from low light into bright and reddish sunrise colors - a nice photo op.

You can find status updates and launch coverage at
Spaceflight Now | Delta Launch Report | Mission Status Center.

You can find more information and a live webcast on launch day at
United Launch Alliance.

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Categories:Astronomy Spaceflight

Updated: 00:31 GMT le 03 juillet 2012

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APRSWXNET Woodland Hills CA US Calabasas, CA
Elevation:	984 ft
Température:	79.0 ° F
Point de rosée:	54.0 ° F
Humidité:	42%
Vent:	2.0 mph from the SSO
Rafale de vent:	6.0 mph
Updated: 19:03 PDT le 21 mai 2013 Station History

At Gonzales Drive Woodland Hills, CA
Elevation:	984 ft
Température:	75.1 ° F
Point de rosée:	55.8 ° F
Humidité:	51%
Vent:	Calme
Rafale de vent:	6.0 mph
Updated: 19:14 PDT le 21 mai 2013 Station History