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Daily Lunar Phases This Month

Daily lunar phases for the month
Diagram created with LunarPhase Pro

Times For Emerging Crescent Moons
Below are times for viewing Crescent Moons in UT for Dublin, Ireland. Crescent data is specific for your location but adding your timezone offset from GMT to the Sunset and Moonset times will give you an idea of when the Moon is visible locally. The amount of time you have to see a crescent and what percentage of the Moon is illuminated will be somewhat different for where you live. LunarPhase Pro will calculate all this information specifically for your location. The data in the screenshot below was generated by the software.

Events for August 2018

In case you're not aware, Jack Horkheimer, who used to produce these Star Gazer videos, died on August 20, 2010 and staff at the Miami Planetarium have been producing them in his place since then.

NASA What's Up In August 2018

HubbleSite - Tonight's Sky For August 2018

August Podcasts:

The Jodcast - from Jodrell Bank in the UK (right-click and select "Save As" to download the podcast for your mobile device). For more information about what's happening this month, visit the Jodcast August page.

What Messier Objects Are Visible Tonight (August):

A list of messier objects visible this month. All are possible with binoculars, most are easy even with small binoculars.

This is the month that we begin to sneak into the summer Milky Way and the
heart of our galaxy as we find 12 more object. Some are visible to the
naked eye, all are possible in binoculars. There are six globular clusters,
four open clusters, and two diffuse nebula. Many of these objects also
appear to be in pairs, either in visual appearance or location.


This pair of globular clusters in the middle of Ophiuchus are
easily swept up in binoculars looking like small blue snow balls. Through
an 8" telescope M12 is well resolved while M10 is slightly more fuzzy
looking. Both become very bright towards the center.


A small, fairly faint globular cluster in Uphiuchus. It is a
tough binocular object, appearing as a very small faint patch of light
possibly requiring averted vision. In a telescope, M107 is a larger and
brighter fuzzy patch of light than what can be seen in binoculars.


Another small, relatively faint globular cluster in Ophiuchus. M9
is very similar to M107, only slightly brighter. Another tough, but possible
binocular object.


Another pair of globular clusters in Ophiuchus separated by about
four degrees. Fairly easy to find in binoculars, they are smaller than
M10 and M12 thus not quite as obvious. These clusters are not resolvable
through small scopes, and appear as round fuzzy patches brightening towards
the center. M19 is slightly brighter than M62.


This is a pair of large, bright open clusters in Scorpius visible
to the naked eye. Binoculars provide the best view of these clusters. Both
are completely resolvable in 10x50 binoculars and can be fit into the same
field of view. M7 is the larger and brighter of the pair.


This is a bright emmission nebula in Sagittarius, easily visible to
the naked eye. The common name of M8 is the Lagoon nebula. In binoculars
M8 is an oval cloud of light larger than the full moon with several bright
stars embedded within it. A telescope makes this nebula larger and
brighter but does not really improve the view.


Another diffuse nebula in Sagittarius only 1.4 degrees northwest of
M8 and is called the Trifid nebula. This is easily seen in binoculars
looking like a cloud of smoke around some bright stars. A view through
a telescope appears much the same, although try to pick out the three
dust lanes that gives M20 its name. This is a somewhat difficult object
to see right away, at first glance it looks like the optics are in need
of cleaning and are causing the light from the bright stars to "smear".


This is a small, but bright open cluster in Sagitarius right next
to M20. Binoculars show a very small bright patch partially resolvable.
Small telescopes easily resolve all of the clusters members. M8, M20, and
M21 are all within the same binocular field and lie in a very rich
region of the Milky Way. This view is one of the finest to be found.


The last object of the month is a large open cluster in Sagittarius.
through binoculars M23 is a large, hazy patch of light almost the size of
the full moon. A telescope at low powers easily resolves this cluster
among a rich background of other stars.

Last Month
- M3, M4, M5, M53, M68, M80, M83
Next Month
- M13, M14, M22, M28, M54, M69, M70, M92

A.J. Cecce, Rev. 7/95

Twelve Month Tour Index -
August tour in Ascii

Hartmut Frommert

Christine Kronberg



Last Modification: 6 Apr 1998

Via The Messier Catalog

Other Events To Watch Out For This Month

Jupiter in August 2018

To the right are the satellite tracks for Jupiter's four main satellites for this month.

Io: White
Europa: Yellow
Ganymede: Orange
Callisto: Light Blue

Diagram created by Jupsat Pro

Daily / Weekly Notes

Today's Sky Event from Earth& Sky
A different astronomical event is described each day

This Week's "Sky at a Glance"
From Sky & Telescope

AMS Meteor Activity Outlook
A weekly preview of meteor activity

Lets Talk Stars
Weekly radio program hosted by David Levy

Jack Horkheimer : Star Gazer
Listing of current and past shows.

Monthly Notes

Sky at Night
Catch up on the latest edition of the BBC Programme

Stardate Daily Programme Calendar
Monthly listing of aired programs from StarDate

The Night Sky
Monthly observing notes from Jodrell Bank

Satellite Predictions and Visibility

NASA Skywatch
NASA SkyWatch is a web-based Java application that provides sky watchers worldwide with a picture of when and where the International Space Station, the space shuttle and other spacecraft can be seen with the unaided eye as they pass overhead.

Heavens Above
Provides all the information you need to observe satellites such as the International Space Station and the Space Shuttle, spectacular events such as the dazzlingly bright flares from Iridium satellites as well as a wealth of other spaceflight and astronomical information.

Online Skymaps and Charts

Your Sky
An interactive planetarium run by Fourmilab. You can produce maps for any time and date, viewpoint, and observing location. If you enter the orbital elements of an asteroid or comet, Your Sky will compute its current position and plot it on the map. Each map is accompanied by an ephemeris for the Sun, Moon, planets, and any tracked asteroid or comet. A control panel permits customization of which objects are plotted, limiting magnitudes, colour scheme, image size, and other parameters.

Heavens Above
Provides a range of charts and information, including sky charts for your location (which you'll have to specify).

Observing Resources

Meteor Showers (International Meteor Organization)
A listing of meteor showers that occur throughout the year.

Recent International Astronomical Union Circulars
This page lists the dates of issue and the titles of the items on the twenty most-recent IAUCs. Individual items can be displayed by selecting the relevant title.

International Astronomical Union: Astronomy Headlines
This page contains brief information on recent astronomical discoveries as reported in the International Astronomical Union Circulars (IAUCs) and the Minor Planet Electronic Circulars (MPECs), as well as links to ephemerides and orbital elements for comets and minor planets.

Observable Comets
Lists links to orbital elements and ephemerides of (potentially) observable comets

Approaching Comets
This website is devoted to monitoring all newly detected unknown objects and identified comets which have the potential for becoming significant events in the near future. It is kept updated very frequently, as new information and/or observations come in.

BAA Comet Section
lists links to news, current magnitudes and ephemerides of currently observable comets.

Major News About Minor Objects
The Asteroid/Comet Connection's daily news journal about asteroids, comets, and meteors.

American Association of Variable Star Observers
The AAVSO is the largest organization of variable star observers worldwide. You can get daily updates and find out more about them, the projects they sponsor and the data they make available to astronomers around the world.

The Minima of Algol
The star Algol (Beta Persei) was the first eclipsing variable star ever discovered, and it's still the most famous one. You can check on it whenever you step outdoors on nights when Perseus is in view.

International Occultation and Timing Association
This page gives information on the circumstances of lunar and other types of occultation for various locations around the world.

Solar Observing
The Sun is a fascinating astronomical object to observe. Extreme care is required if you wish to observe the Sun safely. Never look directly at the Sun with the naked eye or with any optical instrument. You must be familiar with the safe observing methods before attempting to observe the Sun.

The Messier Catalog
A listing of images and information on the Messier objects with links to other deep sky catalogues (NGC objects, etc.)

The Interactive NGC Catalog Online
An interactive NGC (IC, and Messier) catalog at SEDS, based on the famous NGC 2000.0 by R.W. Sinnott of Sky Publishing Corp.

The Night Sky Live
The night sky above some of the world's premier observatories. Click on a star to go to live pictures taken by the fisheye CONtinuous CAMeras (CONCAMs) in operation there. Major sponsors of the CONCAM project include the National Science Foundation and the Dept. of Physics at Michigan Technological University.

The Sky at Night
The BBC's dedicated Sky at Night website. Contains realvideo edition of last programme and links to the newsletter and other items.

BBC Space Site
The BBC's dedicated Space website. Contains links to various observing resources.