Welcome to the WDAS monthly newsletter for July 2014: a digest of the month's latest contributions to our website.  Below you'll find Society News, Sky Notes and In-Focus articles printed in full.  There's also future events, and trailers for other articles which appear in full on the website - just a click away!

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Society News

So far our only star party to go ahead this summer, but it was rather a successful one.

Unfavourable daytime conditions (wet) gave way to a fine evening, allowing Mark, Keith, Lee, Warren and Andi to break out the scopes and observe. The Qtr Moon was the perfect target in the bright twilight conditions, however the setting Sun proved an unexpected bonus with a rash of sunspots visible through the solar filter.

As twilight deepened so the planets emerged - Jupiter, Mars and best of all - Saturn, much to the obvious delight of a sizeable crowd. A passage of the ISS also created a stir. A few of the brighter stars could be pointed out - bearing in mind it was 11pm and conditions were still pretty light, so the scene was quite surreal. A most enjoyable evening outside, before going home to watch England struggle to a 0-0 draw against Hondurus in a pre- world cup friendly. Never mind, hopes were still high, optimism intact.  We should have known better... We do now!

Sky Notes

In this month's edition

Planetary Skylights

Jupiter finally succumbs to bright evening twilight and is lost to view towards the end of the month. Jupiter will return to the morning sky later next month.
 

Mars remains visible during the evenings low in the SW and is joined by the First Quarter moon on the 5th. On the 12th/13th Mars is in conjunction with Spica for the final time this year, after which it races away from the chief star in Virgo, continuing in prograde motion and heading in the direction of Saturn. Telescopically Mars appears rather small with just a hint of surface detail visible.

Saturn is well placed in the evening sky, visible across in the SSW midway between Mars and the conspicuous orange star Antares in Scorpius. Through a scope the stunning rings should be quite apparent - one of nature's finest sights. Look for Titan, Saturn's largest moon as a speck of light nearby, it circles round Saturn twice a month in an anti clockwise direction. Saturn lies near our moon on the 7th.

Let us stay in the evening sky, and in the vicinity of Mars, where the two asteroids Ceres (left) and Vesta (right) lie very close to one another, particularly on the 4th. That evening they will be separated by just 10.5 arc minutes making a great target to view or image. Observe around 11pm when skies are sufficiently dark to pick them out and use the chart to help track them down, both should easily be within binocular (7x50 or 10x50 etc) range with Ceres at mag +8.4 and Vesta at mag +7.1. The pair cross paths later in the month, but Vesta will have pulled away from Ceres by then.  (To locate Ceres and Vesta, see star char below)

Mercury makes an appearance in the dawn sky after July 20th. Look for it low down in the NE just a few degrees above the horizon and lower left of much brighter Venus, which may serve as a guide. A slim crescent moon lies off to the right of Venus on the 24th. You will need to be up around 50 minutes before sunrise to spot them.

Earth is at Aphelion (furthest from Sun) on July 4th, a distance of around 95 million miles (152 million km).
 

Next Moon Phases - 1st Qtr 5th   Full 12th   Last Qtr 19th   New 26th

 

Meteor Watch

A number of lesser meteor showers occur during July.

  • The Capri-Cornids have 3 maxima, July 8, 15, and 26, but all have Zenith hourly rates (ZHR) of only half a dozen -little more than sporadic rates. 
  • The Alpha-Cygnids peak on July 21 with rates between 5 and 10. Cygnus is well placed high in the SSE by midnight.
  • The Delta-Aquarids are a little more prolific and peak on July 29th with a ZHR of round 15-20. The light conditions at this time of the year do mean observations are really limited to the period between midnight and 3am although brighter shooting stars may be spotted earlier.

July 2014 Sky Charts


Locating asteroids: Ceres and Vesta
Click thumbnail for full-size image

Sky Chart for July 2014
Click thumbnail for full-size image

Image Credits: NASA.  Skynotes: Stellarium.

Events

Whitby Youth Hostel - East Whitby - rear of Abbey vistor centre. Book now: email whitbyatyha.org.uk or call 01947 602 878 to reserve a space.

 

Date:
29 March, 2024 - 19:30 to 21:15
Address:

Public viewing open night at the Bruce Observatory - Caedmon College, Normanby Campus, Whitby. Please contact Mark before travelling -01947 605516

Date:
31 March, 2024 - 20:15
Address:
Bruce Observatory - Caedmon College
Prospect Hill
YO21 1LA Whitby
United Kingdom
GB

Observe the night sky with us at the Bruce Observatory, Caedmaon College - Normanby campus (formally Whitby College).

Observing Nights are held weather permitting: check for a relatively clear sky before leaving home. If in doubt, Mark can be reached on tel 01947 605516.

Please note the college drive gate is now operated via a electronic key code - so anyone wishing to attend must be at the car park at the top of the drive by 19:00hrs, unless an arrival time has been arranged with Mark/Keith after 19:30hrs.  Otherwise shout or bip car horn - we'll hear.

Date:
8 December, 2024 - 18:00 to 21:00
Address:
Bruce Observatory, Caedmon School Normandy Site (Whitby School)
Prospect Hill
YO21 1LA Whitby
United Kingdom
GB