BACKYARD ASTRONOMY FROM PALMERSTON NORTH

NEW ZEALAND

A city-centre site is not ideal for astrophotography, but the photographs on this page were taken from near the middle of Palmerston North (Bortle class 6).
They show objects most of which are visible to the unaided eye. Some were taken with a DSLR camera through a telescope and are time exposures, or produced from stacking hundreds of single shots from a webcam, so show more detail.

Send email inquiries about material on this page to astronomy@meldrum.nz    SSL Certificate Authority

Click on this to see the Smart Telescope page...

This all-sky timelapse was taken on 3 February 2021. The milky way stretches across the sky. At the bottom end is Orion (the 'pot'), at the top is the Southern Cross and its pointers. The third quarter moon is rising.

Orion and Scorpius are on opposite sides of the sky, so as Orion disappears into the street lights, Scorpius can be seen rising beside the trees on the right, just before the sun comes up.

This is the live virtual sky above Palmerston North, provided by the Las Cumbres Observatory.

SOLAR SYSTEM

SUN

All the planets of the solar system orbit the star Sol (sun). This photograph was taken on 1 January 2022 when the International Space Station passed over Palmerston North just after 3pm. Setting the camera to take a burst of exposures caught the ISS three times during its 0.7 second pass of the sun.

Notice there is a group of three sunspots on the lower left of the sun. This was taken with a DSLR camera that had a 300mm telephoto lens attached.

STONEHENGE AOTEAROA

Stonehenge Aotearoa, 11 kilometres from Carterton, is a New Zealand structure like the ancient stone circles elsewhere in the world. The obelisk near the centre has a tunnel through it aligned to the south celestial pole (first photo); it can be seen inside the circle in the second picture. The third photo is taken from the centre of the circle showing the heelstone over which the sun sets at summer solstice; and to the right the heelstone to mark the equinox sunset. Click here to see the website and information for visitors. Most of the historic stone circles are largely derelict but this is a complete, working structure. Intriguing and educational so well worth a tour. Click here for a copy of the Alpha booklet by the Royal Society giving details of the henge.

MERCURY

Mercury is the smallest planet and the closest to the sun. Its position results in us only being able to see it just before dawn (if it comes up before the sun), or in the evening as it is getting dark, just as the sun sets. This photo was taken in the twilight at 8.30pm on 11 September 2021. Mercury reaches its greatest eastern elongation of 26.8 degrees on 14 September so this is almost as far from the sun as it ever becomes. The brief time for which Mercury is visible, and its short distance from the horizon, is the reason why it is so infrequently seen.

Only slightly bigger than our moon, Mercury is the most elusive of the five planets that can be seen with the unaided eye.

VENUS

Apart from the moon, Venus is the brightest object in the night sky. Yet it is only a crescent. This photo was taken at 6pm on 13 July 2015 through a 9cm refracting telescope, using the little Neximage camera.

On 6 June Venus reached its greatest eastern elongation (furthest position from the sun when viewed from Earth). It is still moving closer to us now, but as it does so, less surface is illuminated. Venus appears very bright  because although it is less than a quarter crescent, it is so close that the illuminated area appears large from Earth. A small telescope should give a view similar to this over the next few weeks as the brightly-lit area slowly becomes smaller. By the middle of August it moved between us and the sun, so disappeared.

A 100 second video (5 frames per second) was made, and is available here. Of these 500 shots the best were selected and stacked with Registax software to produce the photo above.

With Venus low in the sky it was photographed through a thick and turbulent atmosphere just above the city. The disturbance of the view that resulted is apparent in the video.

EARTH

The most nearby astronomical objects to Earth are meteors. If they become caught by our gravity and are only pea-sized they will burn up as they fall through the atmosphere. If much bigger they can reach the ground and are then referred to as meteorites. Large ones (50 metres across) create craters like the kilometre-wide example near Flagstaff in Arizona. The extinction of the dinosaurs is thought to have resulted from an impact off the coast of the Yukatan Peninsula. Our meteor camera is connected to the Global Meteor Network organisation run from the University of Western Ontario in Canada. Click here to see the latest night's stack of meteors photographed from our backyard. Scroll down to see the unprocessed captured stack; thumbnails; meteor radiants identified; brightness of the sky; astrometry and photometry. Running the timelapse video at the bottom shows the whole night in a two minute movie.

This is a stack of meteor shots taken during the night of 5 May 2025 during the Eta Aquariids. These meteors result from debris left by Halley's comet. The dim rows of dots across the stack are the stars crossing the sky as the Earth turns. Meteors can be identified because they fade in and out as they heat up in the atmosphere and finally burn away. Lines with blunt ends will be satellites.

See information regarding the organisation by clicking here. Click on the camera status map to see all the NZ camera details.

MARS

ASTEROIDS

Mercury, Venus, Earth and Mars are the inner planets. They are much closer to the sun than the rest, with Mars being an average of 228 million km away. There is a gap of 550 million km before the next planet, which is Jupiter. Since the eighteenth century it was thought there should be at least one planet in this space. Instead, the asteroid belt is here. There are believed to be over one million asteroids (rocks) larger than 1 km in diameter, and millions that are smaller.

JUPITER

This photo of Jupiter was taken at 9pm on 6 September 2009. Over 1000 shots were taken (5 per second) and recorded on a laptop.  These were stacked using Registax software to produce this result.  One of Jupiter's Galilean moons (Europa) can be seen to the left.

The light coloured regions are zones and result from upward moving atmosphere.  The dark parts are belts of downward sinking material.  The boundaries between them are bands and the turbulence there results in blue festoons and brown cyclones, particularly near the equator.  The most easily recognised feature is the Great Red Spot, which is actually a light orange cyclone twice the size of the Earth.  The key below points out these features.  This second photo was taken 30 minutes later, notice that the planet has rotated slightly to the right.  It only takes Jupiter 10 hours to make one complete turn, compared to our 24 hours.  This fast rotation is the reason the planet is wider than it is tall.

SATURN

URANUS

NEPTUNE

PLUTO

Pluto is small, 18% the size of Earth. Russia has more land than Pluto. In 2006 the International Astronomical Union decided it was just a dwarf planet because it has not cleared its path of other objects. There are still space rocks and asteroids along its orbit which it has not collected, unlike all other planets. For those who learned in astronomy classes at school that "Michael's Very Extravagant Mother Just Sent Us Ninety Peacocks" it is difficult to accept that Pluto has been ejected. There are Pluto enthusiasts in the astronomical community who argue that it should once again be considered a planet.

MOON

LUNAR LANDSCAPE

Here the moon is 81% lit.

The details of the surface are easiest to see along the terminator (boundary between light and dark). This photo was taken because the most prominent crater of all (Copernicus) is near the middle of the terminator. You can see the rays of ejecta blasted out from the impact which formed this crater.

Copernicus is 93 km wide
and nearly 4 km deep.

moon2.jpg (5654 bytes)

The dark patches are basaltic lava flows, evidence of the moon's volcanic past.

The photo at left was taken through a small telescope. Binoculars should give similar detail.

The photos on this page were all taken from Palmerston North (in the Southern Hemisphere). This is why the moon is upside down compared to the Northern Hemisphere views found in most books. We cannot see a "man in the moon", but there is a rabbit!  Look for it and its long ears on the left of the moon above.

ECLIPSES AND TRANSITS

   

MILKY WAY GALAXY

NEBULAE

ORION

GREAT NEBULA

RUNNING MAN NEBULA

WITCH HEAD NEBULA

ROSETTE NEBULA

TOBY JUG NEBULA

PENCIL NEBULA

SEAGULL NEBULA

THOR'S HELMET NEBULA

SKULL AND CROSSBONES NEBULA

TARANTULA NEBULA

HELIX NEBULA

ETA CARINAE NEBULA REGION

Close to the Eta Carinae region are several deep sky treasures. The Banana Nebula (NGC3199) and Whirling Dervish Nebula (NGC3247) are only a few degrees away, and just over one degree from each other. In a wide-field telescope both these nebulae can be seen at once.

The banana is a crescent which is by far the brightest part of an almost complete ring of nebulosity 11,736 light years away. The Whirling Dervish is a dimmer nebula. The body and skirt of the dancer and the outstretched arms can be seen. It is 26,000 light years away.

Further away, on the other side of the Eta Carinae area, are two large nebulae. The Torch Bearer Nebula is really a small, close one, in front of a much larger, but far more distant nebula. The large one on the left of this photo is the largest in the Milky Way, but it is 20,000 light years away.

The Running Chicken Nebula is a very big object covering 2.2 degrees by 1.9 degrees. This photo shows just the area around the head of the chicken. The comb, eye, beak and wattle can be seen.

FIGHTING DRAGONS AND LOBSTER NEBULAE

By July the centre of the Milky Way crosses the sky and these nebulae almost reach the zenith. This huge deep sky object is called the Fighting Dragons of Ara consisting of a vast bright nebula with several dark nebulae in front. It is in the constellation Ara (the altar). The dark nebulae resemble a couple of dragons attacking each other. At the bottom of the photo is a planetary nebula (a dragon's egg).

On the right is The Lobster, with very faint pincer-like claws stretching up on each side. Some call it The War and Peace nebula. The brightest part (lobster's mouth) is seen as a white dove. Below and to the left is a skull, hence war and peace.

PRAWN AND CAT'S PAW NEBULAE

Nearby are the Prawn and Cat's Paw nebulae. The Prawn is a large emission nebula at 6,000 light years from us.

The Cat's Paw, another emission nebula, is easily recognised. Three fairly round nebulous patches make up the pads and an elongated patch forms the heel. It is about 5,500 light years away.

SNAKE NEBULA AND SMALL SAGITTARIUS STAR CLOUD

The rich field of the Milky Way at its centre is clear in these photos.

The dark snake nebula shows up because of the immense number of stars. The small Sagittarius star cloud is visible to the unaided eye as a bright patch.

STAR CLUSTERS

   
Globular star clusters are interesting deep-sky objects. This is Omega Centauri which is the brightest of all. It is also close at just 16,000 light years and contains about a million stars. The binocular view looks like a large oval cloud.

This photograph was taken with a Mintron camera through a Meade telescope on 5 April 2013. Until then the cluster did not rise high enough above the horizon until late at night. Through the winter it will be easier to find.

The southern hemisphere globular cluster, 47 Tucanae is one of the most impressive. It is easy to resolve in small telescopes and bright enough to be visible to the unaided eye, just to the west of the Small Magellanic Cloud. It is in the constellation Tucana the Toucan and the second brightest cluster after Omega Centauri.

This photograph was taken on 9 February 2013 as the cluster sank lower in the southwestern sky.

This large cluster is impressive. At the base of the long axis of the false cross it is a fuzzy patch to the unaided eye. Bright white stars make up the head and shoulders of the sprinter. Looping chains of stars form the arms. Giant red stars make up a pair of golden running shoes. There is also a gold medal on the sprinter's chest.

CONSTELLATIONS

SAGITTARIUS ON 21 JULY 2018

SCORPIUS ON 12 JULY 2016

GALAXIES BEYOND OURS

LEO TRIPLET

GRUS QUARTET

FORNAX GALAXY CLUSTER

GREAT BARRED SPIRAL GALAXY

NGC2997 SPIRAL GALAXY

COBRA AND MOUSE GALAXIES

CENTAURUS A (NGC5128)

CIGAR GALAXY

SOMBRERO GALAXY

SOUTHERN PINWHEEL GALAXY

EQUIPMENT

The deep sky astrophotographs above were taken with this gear.

 

The computerised mount is a Skywatcher HEQ5 Pro.

The imaging telescope is an Orion ED80T CF. An 8cm refractor. The camera attached is a Canon EOS 60Da DSLR.

On the right is a 5cm Primalucelab guiding telescope with an Orion StarShoot autoguiding camera attached.

On top of the imaging telescope is an Orion QuikFinder, a handy viewer to help indicate where the telescope is pointing. On the left is a Celestron StarSense. This is only connected to the mount when finding objects seems impossible and the StarSense ability to take photographs and plate solve them makes finding the dimmest targets certain.

The cables attached to the cameras are plugged into a Windows 10 laptop running PHD2 software for autoguiding, and Backyard EOS to capture the astrophotographs.

 

For those wanting to recognise the stars and planets there is an excellent resource available at www.cybersky.comThis freeware programme will turn your computer into a planetarium. It shows a labeled view of what the sky looks like now, or almost any time in the past or future. It is ideal for learning the names of the stars, constellations and planets. Just print out the map, then go outside and identify everything.

For those interested in satellite-watching visit www.heavens-above.com This site will tell you when and where to look to see the next bright satellite pass over your place.

Click here to return...