Sic Itur Ad Astra – Thus The Way To The Stars : 143 years of astronomy
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Comet C/2002 C1 (Ikeya-Zhang), taken by Richard Sargent in Chester using an SX Mono Starlight Express CCD, exposure 11x average 1min, 210mm lens at 19:56 UTC on March 13th 2002
Mercury finishes off its excellent evening apparition which began last month. See April’s sky page. On the 4th it reaches its greatest elongation east and will be visible for about 2 hours after Sunset.On the 12th Mercury is 5° north of Epsilon Tauri whilst on the 14th is 3.5° north of the Moon.
VENUS.
Sky chart: Planetary alignment, dusk, May 5th, 2002
Venus reaches its peak throughout May and is visible high up in the west-north-west. As soon as the Sun has set you can try searching for this extremely bright planet especially on the 7th when Venus and Saturn lie 2.5° apart with Saturn approaching from above left from the start of the month. On the 10th at 22:00 Venus and Mars are a mere 18′ apart and with Jupiter also approaching the area the scene is set for a nice quadruple arrangement of planets. The 14th and 15th see the Moon putting some distance between it and the horizon then it too gatecrashes the party. As the month advances Venus passes from Taurus into Gemini lying close to some naked-eye stars in both constellations.
MARS.
Mars in its inevitable path towards the Sun is starting to set earlier and earlier, its fast apparent motion not enough to keep up with the faster Earth. By the end of May sets at 23:17. As mentioned above its close association with Venus on the 10th is a highlight worth looking out for whilst earlier, on the 4th, Mars and Saturn are 2° apart at 15hrs.
ASTEROIDS.
1 Ceres can be found on the Aqr/Cet border at mag 9.3
Jupiter moves further away from the Moon at each month’s conjunction. In May the two bodies lie 1.5° apart at 12:00 on the 16th. Look back at January and February when they were so close that Jupiter was actually occulted and look ahead to November and December when will be nearly 4° apart at their closest point.
Launched in October 1989, the Galileo Jupiter Probe entered orbit around the great planet on December 7th 1995. The Project Galileo Homepage will give you up-to-date information and the very latest images returned.
SATURN.
Saturn is starting to get entangled in the evening twilight but there is still time for a high magnification view through a telescope whilst binoculars will show the apparent relationship between Saturn,Jupiter, Venus and Mars as detailed above.
URANUS and NEPTUNE.
Sky chart: Path of Uranus in 2002
Uranus is starting to become favourable among the stars of Aquarius It shines at Mag 5.9
Positions for the 1st May:
R.A. DEC TRANSIT TIME MAG
22h:03m:16s -12°:42':30" 07h:39m 5.9
Sky chart: Path of Neptune in 2002
Bluish Neptune is in Capricornus at this time, less brighter than Uranus. Both should be seen in dark sky location with clear skies.
Positions for the 1st May:
R.A. DEC TRANSIT TIME MAG
20h:53m:31s -17°:24':05" 06h:29m 7.9
PLUTO.
Sky chart: Path of Pluto in 2002
Best time to look for the almost 14 mag planet is around New Moon. The dates below will be a guide for planning observations.
Positions for May are when pluto's elongation angle is greater than 90°.
DATE R.A. DEC TRANSIT TIME
May 1st 17h:08m:07s -12°:44':04" 02h:43m
May 11th 17h:07m:16s -12°:42':01" 02h:02m
May 21st 17h:06m:17s -12°:40':19" 01h:22m
May 31st 17h:05m:14s -12°:39':05" 00h:42m
On June 7th Pluto at 13.8 Mag reaches opposition in Ophiuchus. It can be found above and to the right of the 4th magnitude star eta Ophiuchi and below and to the left of zeta Ophiuchi.You will need an 8-inch or larger telescope and the best time to see Pluto is when the Moon is not around.
It is best seen between May 4th – May 19th.
METEORS.
May 5th Eta Aquarids (35 per hour) Fairly favourable.
You realise you’re in for a treat as you approach the National Space Centre building. An odd hi-tech shape with a rocket tower reaching 130 feet (42m) into the sky.
Two photographs may be missing from this entry. If you have access to these photographs please let us know so we can restore them to their rightful place!
The LAS space trek to a far distant part of the galaxy called Leicester National Space Centre took place on 20th April 2002.
Liverpool AS group at the National Space Centre in Leicester, Saturday April 20th 2002
It was early Saturday morning when the 49 seater coach, that had seen too many such missions, left the centre of the Universe otherwise known as City Centre, Liverpool, right on time to make it’s only scheduled payload pickup at the outpost known as Pex Hill. The remaining 18 LAS members met the coach at the gates to the Pex Hill road making up a full crew compliment of 31 plus the pilot – err coach driver – sorry!
Timed passed very quickly as members discussed telescope making, astronomical observing, astro-photogaphy, trips to NASA(!) and Society matters. Astronomy Now and Sky & Telescope magazines were very evident throughout the coach and I noticed one member taking the opportunity to revise his GCSE Spanish. What a hi-brow lot we are!
The quaint 15 year old Volvo had a certain harmony as it venomously ate up the 124 miles to Leicester arriving exactly as planned at 10:30am.
Chris Banks and I completed the admin at the NSC check-in desk. Chris dished out the tickets and I explained the logistics of the centre, return time, space theatre booking (1:20pm) and the various lunch options which varied from the cafe at the foot of the Blue Streak and Thor rockets to enjoying the warm weather outside.
We split into groups, wandering around the centre, working our way through all the amazing exhibits. What a treat, a whole day with colleagues, to indulge in our favourite pastime. So what of the exhibits themselves, well you will have to visit the centre yourself to fully enjoy them but here’s a brief rundown of what’s there;
Outside the entrance, the 2 rockets can be seen through the hi-tech tower material. As a point of interest the Blue Streak is actually on loan from Liverpool Museum.
Once in the entrance to the centre an old Soviet Soyus space capsule hangs above you. This was rescued from a courtyard in Georgia in 2000.
The centre is split into several theme areas
Into space, which displays and explains the rigours of space travel from muscle wastage to the crammed conditions of a tin can in space. Did you see if you would be space sick? According to the NSC, there has been something in space made in Leicester since the mid-60’s!
Exploring the Universe, took you through black holes, the creation of the universe, birth and death of stars and even making your own alien.
The planets gave you a complete walk through our Solar System with moon rock and a working Martian rover (a model I believe as no one has been and brought the real one back yet!). Mixed with huge models of the planets, moon systems and asteroids.
Orbiting Earth demonstrated what our artificial satellites do for us. From the GPS system that hi-tech telescopes use to those satellites giving us environmental monitoring and communications. Did you try the weather forecasting studio?
Space Now had information about current & future space missions and models of probes such as Huygens. The big screen viewer showed various ‘space now’ images and short films. While we were there a demonstration on what a comet is made of and how it reacts with space proved very popular. Space Now was also the home to the NEO information centre. This was opened on the day. Info can be found at www.nearearthobjects.co.uk
The Space Theatre planetarium held 160 people in suspense as we were whisked off to distant parts of the universe without leaving our reclined seats, all narrated by Richard Attenborough. The vehicle that took you around the universe in 25 minutes was the ‘Spitz ElectricSky video projection system’ – that plus other projectors delivered the whole experience. Many of the shows are created at the NSC.
Last but not least is the rocket tower whereby viewing the rockets and other space vehicles can be observed and examined on the many different levels up to the very top of the rockets.
When the exhibits have been completed, there is always the Cargo Bay shop with lots of goodies to spend your money on.
Finally, the day finished at 3:30pm when we departed on time to head back to Merseyside. A somewhat quieter return journey as our space heroes young and old rested after a very long day touring the Cosmos. The coach dropped off at Pex Hill at 5:45pm then made it’s final leg of the trip back to Liverpool city centre.
Info Sheet: Mercury, Venus, Saturn and the Moon in the western evening sky during April and May 2002
Mercury starts off a very favourable evening apparition this month and it is worth making the effort to locate this swift-moving planet. From the 21st onwards look to the right of west about 10° above the horizon at the time of civil twilight, using THIS TABLE to help guide you. Evening apparitions always start off bright with the magnitude fading as the planet’s phase lessens. On April 16th Mercury is magnitude -1.4 but ny May 16th this has dropped to +2.7 with an almost full phase early on, shortening to 13% crescent phase at the end of the apparition. On April 29th/30th Mercury lies 1.5° south of the fine, wide open star cluster the Pleiades in Taurus.
VENUS.
Venus should by now be highly visible in the west, setting just on two hours after the Sun does. On the 14th the Moon passes 3.5° south of Venus at 19hr whilst on the 21st/22nd Venus passes 4° south of the Pleiades star cluster.
MARS.
Mars is starting to fade but is still hanging on in the western sky, setting two hours after the Sun. Watch over April and May as Mars and Venus start to move closer to each other, leading up to a close encounter early next month. Travelling through Taurus Mars passes 3.5° south of the Pleiades on the 14th, 4.5° north of delta Tauri on the 23rd, 3.5° north of epsilon Tauri on the 25th and also on the 25th to close 10′ north of kappa Tauri. On the 16th Mars is 3° north of the Moon.
Jupiter is travelling through Gemini with the Moon lying in close attendance less than a degree south of the Moon on the 19th.
Launched in October 1989, the Galileo Jupiter Probe entered orbit around the great planet on December 7th 1995. The Project Galileo Homepage will give you up-to-date information and the very latest images returned.
SATURN.
Saturn, can be found in Taurus, a good way to the right of Jupiter. On the 24th a view through a pair of binoculars will show Saturn passing 2° north of the star cluster NGC1647 but the highlight of Saturn’s year is an occultation by the Moon at 21:55 on the 16th. Like Jupiter’s occultations earlier this year Saturn will spend several tens of seconds gradually disappearing behind the Moon’s dark limb. Saturn reappears from behind the Moon’s bright limb at 22:25. If the sky is dark enough use a telescope to search for Saturn’s large satellite Titan to the right of the planet as this will be occulted at 21:53 therefore giving a couple of minutes warning of the approaching lunar disk.
Saturn’s Lunar Occultation on April 16th
Info Sheet: Lunar Occultation of Saturn, 20:45 on 16th April, 2002
Uranus is slowly recovering from its February solar conjunction, and can be seen at Mag 5.9 in Aquarius.
Positions for the 1st April
R.A. DEC TRANSIT TIME MAG
21h:59m:02s -13°:04':11" 09h:33m 5.9
Like Uranus, Neptune is recovering from its solar conjunction in January and at mag 7.9 in Capricornus the approaching twilight will hinder chances of locating this outer planets.
Positions for the 1st April
R.A. DEC TRANSIT TIME MAG
20h:51m:44s -17°:31'02" 08h:25m 7.9
PLUTO.
Pluto can be found on the border of Ophiuchus at mag 13, below and to right of the 4th magnitude stars eta Ophiuchi, and below and to the left of zeta Ophiuchi.The best time to look for the planet is around New Moon. The dates below will be a guide for planning observations.
Positions for April are when pluto's elongation angle is greater than 90°.
DATE R.A. DEC TRANSIT TIME
April 1st 17h:09m:44s -12°:51':24" 04hr:42m
April 11th 17h:09m:23s -12°:48':52" 04hr:02m
April 21st 17h:08m:51s -12°:46':23" 03hr:22m
Pluto is best seen between April 4th – April 20th.
METEORS.
April 12th VIRGINIDS & alpha Virginids (6 per hour) Favourable
April 22nd/23rd APRIL LYRIDS (15? per hour) Fairly Favourable.
April 28th ALPHA SCORPIIDS (5 per hour) Unfavourable.
COMETS.
6th April Comet C/2002 B2 (Linear) at Perihelion (3.843AU).
10th April Comet C/2002 C2 (Linear) at Perihelion (3.254AU).
20th April Comet C/2002 B1 (Linear) at Perihelion (2.271AU).
21st April Comet C/2002 A3 (Linear) at Perihelion (5.147AU).
29th April Comet C/2002 C1 (Ikeya – Zhang) closest to Earth at 0.405AU).
30th April Comet C/2000 SV74 (Linear) at Perihelion (3.542AU).
Plus these pages will give daily and weekly reports of this and other Comets progress.