HARLEY WOOD, Government Astronomer

Issued by








By Andrew James

In this section of webpages is the reproduction of a small forty page A5-sized (7¾×9¾cm. or 5½×8½−inch) card-covered booklet that was originally issued by the Government Astronomer of New South Wales, Dr. Harley Wood at Sydney Observatory. Financially supported by the Donavan Trust, this booklet was originally one of several published editions that appeared during the Second World War (WWII). Both 1st & 2nd Edition were made during 1941, and the 3rd Edition in 1942. This greatly expanded version here is the last 4th version. Dr. Wood had produced all these works, which was originally produced for boy scouts with its supplement to make the information more useful for military purposes. This whole booklet became the important foundation for basic training and teaching of service personnel in the Australian Army, Navy and Air Force.

Dr. Harley Wood had in New South Wales already made significant contributions as an educator, including teaching the basic principles of astronomy and how to use the sun, moon and stars for navigation purposes. The latter was both useful and important in wartime during nighttime manoeuvres or finding directions when combating the enemy, which often required stealth or camouflage, careful positioning of forces or attacks on the opposing forces under total darkness. This could save countless lives and the survival of individuals, platoons or squadrons.

This useful little booklet had real benefits. As said by Dr. Wood in his introduction;

…officers who had taken part in such campaigns seem impressed with its value which is increased by the present-day practices of performing many military movements at night.

Carried onto the field of battle by one of the military units leaders, this simply designed book was useful for basic navigation by infantry or sailors at sea. For example, the back cover (See Figure Left or the full sized image at the Bottom of Part 5.) along with the inside attached text) could be easily used for nighttime star navigation or find your bearings. It is a great tribute to its effectiveness, especially with the easy and concise language style use. Of course, the real advantage other than finding direction was also in using the Sun, Moon and stars to get an estimation of local time. Such advantages were applicable in knowing the expected time of local civil or nautical twilight. Advantages during the North African desert campaigns showed having some astronomical knowledge was valuable to army soldiers. No doubt, this booklet did mercifully saved many lives during WWII.

In wartime Australia, the real prospects of an expected Japanese invasion sometime during 1942 or 1943 meant that some understanding of navigation was required. All senior military commanders knew of the considerable inherent difficulties in defending the comparatively vast uninhabited expanse of Northern Australia. So knowing the position of the enemy and you became very critically. Strategists considered that most of these plausible military engagements would be more protracted guerrilla-type warfare by small squads.

One of the navigational drawbacks in the Australian desert regions were few geological features and the unavailability of accurate survey maps for much of inland Australia. Furthermore, when using compasses for determination of the cardinal points were also troublesome, mostly credited to the distribution of magnetite-rich (Fe2O3) or hematite-rich (Fe2O4) iron ore deposits across the continent.

On 27th January 1942, the Australian Government formally requested that Allied forces protect mainland Australia from possible Japanese attacks from the north, forming the naval ANZAC Force or ANZAC Command. After 22nd April 1942, this becomes part of the South West Pacific Area [Command] (SWPA) directly under US Army commander, General Douglas Macarthur (1888-1964).

From what I can find, ANZAC Command requested the first of these booklets, as the Australia Government expected that they might have to defend mainland Australia alone. With the Americans becoming involved safeguarding Australia, the emphasis changed to the Allied Forces. Although the immediate need for military training encompasses many specific aspects of new knowledge and new skills, ANZAC Command considered navigating by the stars important.


I have reproduced the information as best I could from the original documentthat I proudly have in my possession. All the page background colours are as identical to the document as feasibly possible. I would have produced all the document pages as single images, however, the age and text font were difficult to reproduce very accurately, so I just typed everything. In addition, most of the figures are a little bit bigger than they should be, but the reproduction here is as close as I could get to the originals. Everything is as it appears, except for finding local Sunrise and Sunset in Fig.III. Some of the errors mostly seem to be with the Government Printer Office who printed this booklet. A poor copy unfortunately has made the various times written on the graph quite eligible.

Star charts attached in the last few pages of the booklet were later after in 1954 to appear in a dozen or so different books or publications over the years. I.e. The general astronomy book Planets, Stars and Galaxies: Exploring our Environment in Space by Harley Wood (1973). I am unsure if anyone has claimed copyright on them, however, the star charts here have been reproduced from the original document and background, whose copyright has long since lapsed. These charts do have some personal meaning to me. I can still recall, many years ago, using these star charts in the separate booklet entitled Star Charts (and the text of this appears as a separate addendum.) In my early teenage years, this was made far more special in having Dr. Wood personally giving me my own copy on my first visit to Sydney Observatory! Thankfully, these charts only go down to 4th magnitude, as this is just above the sky brightness limit from the inner suburbs of Sydney.

In all, much of the information presented is still quite relevant some seventy-five years later (2020) though the written style is slightly antiquated. I am quite unsure who might like to read this booklet — but it will certainly remind those who were scouts or those who did active military service. Perhaps if you read this, you could send me a short e-mail, reflecting on the times of this written document or even some short positive comment.


Towards the beginner, having navigational knowledge in using the stars, sun or moon these days is rarely, if ever, needed. To find your way now just requires the generally available GPS satellite navigation devices and/or a mobile phone, and you can never be lost or not know where you are. Stellar navigation as an art seems almost redundant. Although the sprawl of urban environments encroaches upon us making it more difficult to see the stars, nevertheless, if you do know the sky, then during fine weather you will never find yourself in completely unfamiliar surroundings. The best part is you will be always be in familiar and friendly environment and this will enable you to orientate yourself regardless of where you are. As reflected in the contents of this little booklet, such knowledge will be easy to grasp as while you read it and see the stars for yourself.


Andrew James : 18th March 2011

NOTE: Text written as [*NN] is the page number in the original document.

Aussie flag Kiwi flag


In true remembrance of so many of our ANZAC mates that sadly lost their lives during war, we do humbly in gratitude remember those who paid the ultimate sacrifice so we can continue to enjoy our freedoms — against tyranny, the dark shadows of evil, and those who wish to enslave us. Like many of my fellow Australians and New Zealanders, and those peoples of the world who share the same ideals — we will always remain so eternally grateful.

As we all faithfully say in the oath
towards their personal sacrifices;

They shall not grow old, as we who are left grow old.
Age shall not weary them, nor the years condemn.
At the going down of the Sun, and in the morning,
We will remember them.



Last Update : 17th January 2021

Southern Astronomical Delights © (2020)

For any problems with this Website or Document please e-mail me.