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Moon Phase

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The West Rand Astronomy Club will be hosting a Weekend Away Star Party

at the Mountain Sanctuary Park from 6th to 8th August 2010.
The Mountain Sanctuary Park is a private nature reserve in the Magaliesberg
Mountains, about 120km north-west of Johannesburg and 90km west of
Pretoria.
The night sky is beautiful from this site and if conditions are favourable, the
Coal Sack in the Southern Cross and the Small Magellanic Cloud can be
seen.
Accommodation options are chalets, log cabins or camping.
Those bringing telescopes stay free, if camping. 10 large campsites have
been reserved for those with telescopes. These campsites border a central
field where the telescopes will be set up.
Please join us for a weekend of star gazing under dark skies.
Bookings
Please contact Elizabeth at Mountain Sanctuary Park
Tel: (014) 534-0114 (08H00 - 17H00, 7 Days a week)
e-maill: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Website: www.mountain-sanctuary.co.za
Be sure to mention you are booking for the WRAC Star Party and
whether you are bringing a telescope.
For more information contact
Kenny Nevill on 082 335 1983, email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
If bringing a telescope, please email Doryn Jolly, This e-mail address is being protected from spambots. You need JavaScript enabled to view it to let
her know you are bringing a telescope and the type of telescope.
Terms and conditions apply.

Invite

Map

Star Party Etiquette

Mountain Sanctuary Park Rules

 
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Since the dawn of time man has looked up at the sky in amazement and wondered what was out there, We now know much more than our ancestors, but the beauty of the heavens still mesmerise us today.

In keeping with this age old tradition we have established an Astronomy club ( WRAC) for enthusiasts and interested people alike to come and spend some time and indulge in this interest. Those who know teach and those who want to know learn and those that just want to gaze up feel free to do so.

The club does not charge for membership, nor do we make meetings mandatory however we do expect members to at least register on the web site and login from time to time so we can keep our database up to date with active members. We try and have a star party once a month to have some hands on exposure to the universe.

The WRAC (West Rand Astronomy Club) participates in community upliftment and public events to spread the beauty of the skies to those that are interested and do not have access to a telescope, thus encouraging people from all walks of life to look up and appreciate what we are privileged to see - the wonders of the universe.

So come one come all and feel welcome in the presence of likeminded individuals exploring the universe.

 
Night Sky July 2010 PDF Print E-mail

Meetings / Events:

10 July: 17h30

WRAC Monthly Star Gazing Evening -Monthly Star Gazing evenings are a bring-and-braai club social and viewing event held near new moon at Clint Matthew’s plot in Tarlton.

28 July: 19h00

Club Meeting, Dutch Reformed Church, Corlette Avenue, Witpoortjie - Cost: Donation of R10 for use of the venue which includes tea / coffee.

Presentation: To be advised. Telescopes will be set up for viewing (weather permitting).

Members are encouraged to bring along your telescopes, observation sheets and any of your favourite Astronomy related books for discussion. Ask questions, share information and enjoy.

Reminder: Star Party Weekend at Mountain Sanctuary Park from 6-8 August 2010

Topics discussed at last Meeting:

Gary Els gave a fascinating and well-researched presentation on the movement of the Earth’s axis of rotation (Obliquity of the Ecliptic).

Kenny Nevill gave a presentation on the July Night Sky and topics in the news.

Dave Philips donated a 6 inch Dobsonian Telescope to the club on behalf of Vince Nettman. The Club now has three telescopes (including those of Gerhard Koekemoer’s) stored at the church which can be set up for viewing at the monthly meetings.

SOLAR SYSTEM

Mercury: Mag. -1.9 Sets with Sun on 1 July, but is visible for 2 hours after sunset by month end.

Venus: Mag. -4 Visible for about 2 hours after sunset (evening star).

Mars: Mag. 1.3 Visible for 4 hours after sunset.

Jupiter: Mag. -2.5 Rises at 23:00. Visible for the rest of the night.

Saturn: Mag. 1.1 Visible all evening until an hour before midnight.

Uranus: Mag. 5.8 Visible from 2 hours before midnight until dawn

Days are getting shorter, nights are getting longer. 01 July Sunrise 06:56 Sunset 17:27. 31 July Sunrise 06:47 Sunset 17:41

NEVER LOOK AT THE SUN WITHOUT PROPER EQUIPMENT/PROTECTION

Jupiter's Great Red Spot

The Great Red Spot is worth a look this month. It is more prominent with the absence of Jupiter’s South Equatorial Belt

Constellation Culminations

Culminate at 21:00: Apus, Circinus, Corona Borealis, Libra, Lupus, Norma, Ophiuchus, Scorpius, Serpens &

Triangulum Australe.

Midnight culmination: Aquila, Corona Australis, Lyra, Pavo, Sagitta, Sagittarius, Scutum, Serpens & Telescopium.

Comets & Asteroids

Ceres is passing in front of a dark cloud of dust and gas known as Barnard 78 (Pipe nebula). This hides most of the

Milky Way stars allowing 7th magnitude Ceres to be easily seen. On the 6th of July it will lie next to a 6th

magnitude star 2.5 degrees southeast of Theta Ophiuchus. With a telescope you may be able to see Ceres move

relative to the star over a few hours.

General:

11 July New Moon (Solar eclipse – Not visible in South Africa; visible from the Cook Islands, French Polynesia,

and the southern tip of south America)

23 July Grouping of Mercury, Venus, Mars and Saturn

26 July Full Moon

Meteor Showers

Phoenicids Maximum: 13 July Watch from 23h00 < 5 meteors per hour

Pisces Australids Maximum: 28 July Watch from 21h30 5 meteors per hour Moon interference

Southern Delta Aquarids Maximum: 29 July Watch from 22h00 25 meteors per hour Moon interference

Deep Sky

Numerous open clusters, globular clusters, nebula and galaxies visible through binoculars and telescopes. List of

“Top 100” deep sky objects can be downloaded from:

www.psychohistorian.org/astronomy/deep_sky_observing/top_100_deep_sky_south.php

International Space Station and Satellites

Satellites are best visible during the first and last 90 minutes of night.

International Space Station: For best viewing times, log on to:

______________________________________________________________________________________

For more information Logon to:

Map to Clint’s place (Monthly Star Gazing evenings)

www.jsc.nasa.gov/sightings/ www.wrac.org.za or Contact Kenny: 082 335 1983 Compiled by Doryn Jolly

Coming from Krugersdorp you take the R24 Rustenburg Road to Magaliesburg, then pass the Krugersdorp Game Reserve gate. Follow the blue line to 40a Linda Street, Helderbloom, Tarlton. Coming from N14 you turn left into Rustenburg Road. Go approx. 6.5km then turn left and you are at the blue line. Then proceed to 40a on Linda Street.

Latitude: 26°06'19.31"S Longitude: 27°42'04.35"E. Contact Clint Matthews: 082 925 6147

DEEP SKY OBJECTS VISIBLE MID-EVENING IN JULY

# Object ID Type Size Con RA Dec Vis

39 NGC 3242, Ghost of Jupiter Plnb 16” Hya 10 25 – 18 38 Feb–Jul

46 NGC 3766, VdB-H 120 OpCl 12 Cen 11 36 – 61 37 Feb–Sep

47 NGC 3918, Blue Planetary Plnb 12 Cen 11 50 – 57 11 Feb–Sep

48 NGC 4361, PN G294.1+43.6 Plnb 45” Crv 12 25 – 18 48 Mar–Jul

49 Dark Doodad, SDC 301.0-08.6c DrkN 80’ x 3’ Mus 12 27 – 71 25 Feb–Sep

50 NGC 4594, M 104, Sombrero Glxy 8.7’ x 3.5’ Vir 12 40 – 11 37 Apl–Jul

51 Coalsack DrkN 6.5° x 5° Cru 12 53 – 63 00 Feb–Sep

52 NGC 4755, Herschel's Jewel Box OpCl 10’ Cru 12 54 – 60 20 Feb–Sep

53 NGC 4833, GCl 21 Glcl 14’ Mus 13 00 – 70 53 Feb–Sep

54 NGC 4945, LEDA 45279 Glxy 20’ x 3.8’ Cen 13 05 – 49 28 Feb–Sep

55 NGC 5128, Centaurus A Glxy 18’ x 14’ Cen 13 26 – 43 01 Feb–Sep

56 NGC 5139, Omega Centauri Glcl 36’ Cen 13 27 – 47 29 Feb–Sep

57 NGC 5189, PN G307.2-03.4 Plnb 2.6’ Mus 13 34 – 65 59 Feb–Sep

58 NGC 5236, Messier 83 Glxy 13’ x 11’ Hya 13 37 – 29 52 Feb–Jul

59 NGC 5281, VdB-H 152 OpCl 5’ Cen 13 47 – 62 54 Feb–Sep

60 NGC 5460, C 1404-480 OpCl 25’ Cen 14 08 – 48 19 Feb–Sep

61 NGC 5662, VdB-H 162 OpCl 12’ Cen 14 35 – 56 33 Feb–Sep

62 NGC 5822, Melotte 130 OpCl 40’ Lup 15 05 – 54 21 Mar–Sep

63 NGC 5823, Melotte 131 OpCl 10’ Cir 15 06 – 55 36 Feb–Sep

64 Barnard 228, Bernes 148 DrkN 4° x 20’ Lup 15 45 – 34 24 Apr–Oct

65 NGC 6025, VdB-H 181 OpCl 12’ TrA 16 04 – 60 30 Feb–Sep

66 NGC 6067, Melotte 140 OpCl 13’ Nor 16 13 – 54 13 Mar–Sep

67 NGC 6087, S Norma Cluster OpCl 12’ Nor 16 19 – 57 54 Mar–Sep

68 NGC 6121, Messier 4 Glcl 26’ Sco 16 24 – 26 32 May–Oct

69 NGC 6124, C 1622-405 OpCl 29’ Sco 16 26 – 40 40 May–Oct

70 NGC 6193, VdB-H 195 OpCl 15’ Ara 16 41 – 48 46 Mar–Sep

71 NGC 6218, Messier 12 Glcl 15’ Oph 16 47 – 01 57 Jul–Sep

72 NGC 6231, VdB-H 201 OpCl 15’ Sco 16 54 – 41 48 May–Oct

73 NGC 6254, M 10, Bennett 83 Glcl 15’ Oph 16 57 – 04 06 Jul–Sep

74 NGC 6266, Messier 62 Glcl 14’ Oph 17 01 – 30 07 May–Oct

75 NGC 6273, Messier 19 Glcl 14’ Oph 17 03 – 26 16 Jun–Oct

76 NGC 6281, Collinder 324 OpCl 8’ Sco 17 05 – 37 54 May–Oct

77 B 59-78, Pipe Nebula DrkN 7° Oph 17 25 – 26 30 May–Oct

78 NGC 6405, M 6, Butterfly Cluster OpCl 15’ Sco 17 40 – 32 13 May–Oct

79 NGC 6397, GCl 74 Glcl 26’ Ara 17 41 – 53 40 Apr–Oct

80 NGC 6475, M 7, Ptolemy's Cluster OpCl 80’ Sco 17 54 – 34 49 May–Oct

81 NGC 6494, Messier 23 OpCl 27’ Sgr 17 57 – 19 01 May–Oct

82 NGC 6514, M 20, Trifid Nebula BrtN 29’ x 27’ Sgr 18 03 – 23 02 May–Oct

83 NGC 6523, M 8, Lagoon Nebula BrtN 1.5° x 0.7° Sgr 18 04 – 24 23 May–Oct

84 NGC 6531, Messier 21 OpCl 13’ Sgr 18 05 – 22 30 May–Oct

85 NGC 6541, GCl 86 Glcl 13’ CrA 18 08 – 43 42 May–Oct

86 NGC 6584, GCl 92 Glcl 8’ Tel 18 19 – 52 13 Apr–Oct

87 NGC 6618, M 17, Omega Nebula BrtN 0.8° x 0.6° Sgr 18 21 – 16 11 May–Oct

88 IC 4715, Messier 24 *cld 95’ x 35’ Sgr 18 27 – 18 23 May–Oct

89 IC 4725, Messier 25 OpCl 32’ Sgr 18 32 – 19 15 May–Oct

90 NGC 6656, Messier 22 Glcl 24’ Sgr 18 36 – 23 54 May–Oct

91 NGC 6705, M 11, Wild Duck OpCl 14’ Sct 18 51 – 06 16 Jun–Oct

92 NGC 6723, GCL 106 Glcl 11’ Sgr 18 59 – 36 38 May–Oct

93 Bernes 157 DrkN 55’ x 18’ CrA 19 03 – 37 08 May–Oct

94 NGC 6744, LEDA 62836 Glxy 15’ x 10’ Pav 19 10 – 63 51 Jul–Jan

95 NGC 6752, GCl 108 Glcl 20’ Pav 19 11 – 59 59 Jul–Jan

96 NGC 6809, Messier 55 Glcl 19’ Sgr 19 40 – 30 58 May–Oct

97 Melotte 227, Collinder 411 OpCl 50’ Oct 20 12 – 79 19 Jan–Dec