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The Price of Light Pollution - by Graham Relf

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Graham Relf
Time of observation
17/06/2012 - 09:05
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This image is a comparison of photographing the same portion of the Milky Way from suburbia (Whitley Bay, Tyneside) and in the country (Rookhope, North Pennines). This is the Cygnus area; the bright star on the right just above centre is Vega. Part of the problem in suburbia is that you cannot take exposures as long as you can in the country without the detector saturating. The photo on the right is a stack of 32second exposures at ISO 6400 but on the left only 10seconds at ISO1600 was possible for each individual exposure.
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Unusually large NEO 2012 LZ1

An unusually large Near-Earth Object, 2012 LZ1 has just been discovered by Rob McNaught and colleagues on 2012 June 10/11 using the 0.5-m Uppsala Schmidt telescope at Siding Spring, Australia as reported in MPEC 2012-L30 issued on June 12 09:30 UT.

The newly-discovered NEO is approximately 300-700 metres in size (H=19.7) and makes its closest approach of 0.036 AU (about 14 lunar-distances) on June 15.0 UT.  The object will be visible from the UK near closest approach rather low down in a south-eastly direction and may be best seen before dawn (around 01:00-02:00 UT) on Friday, June 15 as an asteroidal object, magnitude 13.9 or so, moving at an apparent speed of about 38 “/min at an altitude of roughly 25 degrees above the horizon.

BAA Member Martin Mobberley captured these images  using a remote telescope in New Mexico.

NEO 2012 LZ1 imaged by Martin Mobberley on 2012 June 14

NEO 2012 LZ1 imaged by Martin Mobberley on 2012 June 15

 

Unusually too, although moving in an orbit inclined at 26 degrees, its motion is quite commensurate with that of the Earth at the moment and so the object will remain visible from the UK on many successive nights as it moves further northwards.

During the next ten days, the declination, brightness and apparent speed will be as follows:

June 14/15  Decl. -15  V=13.9  38″/min
June 15/16  Decl. +01  V=14.2  36 “/min
June 16/17  Decl. +13  V=14.6  30 “/min
June 17/18  Decl. +23  V=15.1  23 “/min
June 18/19  Decl. +31  V=15.6  18 “/min
June 19/20  Decl. +37  V=16.0  13 “/min
June 20/21  Decl. +42  V=16.4  10 “/min
June 21/22  Decl. +46  V=16.7  8 “/min
June 22/23  Decl. +49  V=17.0  7 “/min

Note that the summer solstice this year occurs on June 20 at 23h UT at which time this object will be visible from the UK in a westerly direction at an altitude of some 54 degrees.

Given its size and proximity to the Earth, 2012 LZ1 is the latest potentially hazardous asteroid (PHA) discovered.
Congratulations to Rob McNaught on this particular find which was conducted as part of the Siding Spring Survey; an NEO search program, the southern hemisphere counterpart of the Catalina Sky survey.
See:  http://www.mso.anu.edu.au/~rmn/

Sky coordinates for finding this new visitor to the Earth’s neighbourhood can be obtained from the Minor Planet Center’s ephemeris service at:
http://minorplanetcenter.net/iau/MPEph/MPEph.html
Remember to enter a suitable Observatory Code in the online form to achieve a satisfactory topocentric prediction.  For the UK, you might wish to use the Code for Greenwich namely ‘000′.

Observers are encouraged to report astrometry to the Minor Planet Center.
Please report photometry to the nearest 0.01 mag to Richard Miles, Director, Asteroids and Remote Planets Section,  British Astronomical Association
arps [at] britastro.org

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BAA Gallery Transit of Venus 2012
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Steve Dean from the Isle of Wight

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Stephen Dean
Time of observation
12/06/2012 - 08:29
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This image wastaken with a skywatcher 80 mm ED refractor at approximately 05.30. The camera was a modified Canon EOS 1100D with baader solar film at the front of the scope. The images were taken from Ryde on the Isle of Wight
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
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The Transit - by Martin Ratcliffe and Dave Eagle

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Dave Eagle and Martin Ratcliffe
Time of observation
11/06/2012 - 17:16
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This week we have cheated just a little bit with POTW. We are running a montage, with the main feature one of Martin Ratcliffe's Venus transit images from Wichita, Kansas (see the transit page for full details) and as an inset we have just received a videocam image from Dave Eagle of the planet at 1000 BST on 20120610. Well done to both observers, and thanks Dave for checking that Venus is still moving on!.........
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Grant Privett at 0538 BST

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Grant Privett
Time of observation
11/06/2012 - 17:09
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This is astack of 4 images taken with a Lumix DMC-Fz7 (not a DSLR) at full optical zoom through a Baader filter. Taken during a short gap in the cloudstowards Salisbury Plain near Fovant, Wilts. A lovely morning, I waited through the cloudy bits listening and watching as 3 larks ascended. A wonderful start to the day.
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
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Khaled Al-jamaan - Kuwait

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Khaled Al-jamaan
Time of observation
08/06/2012 - 10:23
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Image by khaled. al-jamaan on 6 jun 2012 using celestron 4 " and canon 600 d
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
BAA Gallery Transit of Venus 2012
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Rugby and District AS

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RADAS
Time of observation
08/06/2012 - 10:18
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From the Rugby & District event, taken by Dr. Jo Jarvis.Lat: N52.12754Long: W1.35553 Time taken [from camera file information] 06 ?June ?2012, ??05:45:02David MorrisSecretaryR&DAS
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
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Daniel Self - Breckland AS

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Daniel Self
Time of observation
08/06/2012 - 07:27
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I'm a member ofBreckland Astronomical society. At 2:30 am Wednesday morning I drove about 150 miles from rainy Norwich, and made it to a field in Buckinghamshire (near Aylesbury off the A61) at about 5 am and decided to stop and take my chances with the clearing sky. I set up the society's4" Vixen refractor on a tripod with a Canon1000D (modified) at prime focus. Using ISO 100 and full aperture (~f/11) at 1/4000", I took this pictureatjust after half past 5 (I believe),just as a tiny gap in the cloud passed over the sun. A great adventure and a lucky success. I hear the Abingdon society (60km to the SW) were clouded out and thecloudwas clearing from this direction.
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
BAA Gallery Transit of Venus 2012
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Matthew Scott - Stratford on Avon

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Matthew Scott
Time of observation
07/06/2012 - 23:08
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Short period view of end of transit due to fairly full cloud - captured using Solarscope.
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.
BAA Gallery Transit of Venus 2012
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Santosh Mahato - West Bengal, India

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Santosh Mahato
Time of observation
07/06/2012 - 23:02
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Venus transitas seen from Binnaguri, West Bengal, India on Wednesday 6th June 2012.This image was taken with a Nokia 5230 camera using a Sky-Watcher Explorer-130 (EQ2) 130mm (5.1") f/900 Newtonian Reflector Telescope and baader solar filter. Santosh Kr Mahato Team Leader SWAN's Binaguri StationAsstt. Manager (EDP)Binaguri Tea EstateWest BengalIndia
Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.

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