Our Sun by Jim Burchell – 23rd August 2024

NEVER LOOK AT THE SUN DIRECTLY. Please click here for solar observing safely.

A fantastic white light image of the Sun taken by member Jim Burchell on the 23rd August 2024 from Dartford.  As you can see the Sun was very active with lots of huge sunspots.  Jim took the single shot image using a white light Baader planetarium Astro Solar Filter and a Pentax KP body attached to 102mm F11 Altair Astro refractor at 1/320 sec and iso 100.  Then processed in Snapseed.

 

Below is a spaceweather.com photo of the Sun with the sunspots given their number taken on the same day.

M31 by Kevin Langford – 19th August 2024

Messier 31 The Andromeda Galaxy (M31) taken by member Kevin Langford on the 19th August 2024 from Bexley.  Kevin said ''This is just a 30mins of exposure as I was packing up for the night.  I know it is very grainy, it needs a lot more time spent on it.''  Well we think it is rather superb as it is Kevin!

Kevin acquired his image using an ES102 with focus reducer and L-eNhance filter. Processed using Nina, Siril, and Affinity photo.  

Congratulations to Simon Dawes

NEVER LOOK AT THE SUN DIRECTLY. Please click here for solar observing safely.

The Society would like to congratulate Simon Dawes for having his sunspot image (see below) published in the British Astronomical Association journal - August 2024 edition.  Well done Simon; it is a superb image.  Details of how Simon acquired his image is on the photo.

A mosaic of the groups AR3638, AR3643, and AR3645–3647, imaged in white light on 2024 April 18 at
07:31 UT, in Bexleyheath.

The Sun – 12th August 2024 by Dr Mike Rushton

NEVER LOOK AT THE SUN DIRECTLY. Please click here for solar observing safely.

A lovely white light image of the Sun taken on the 12th August 2024 by member & trustee Dr Mike Rushton; using his Dwarf II smart scope. The image is stacked and is made up of 25 x 1/200 sec exposures at gain 0.

The large sunspot top left is AR3784 and the large sunspot to the bottom right is AR3780.

Latest images by member Terry Miles

Two super images by member Terry Miles taken using his Seestar S50 smart telescope on the 11th August 2024. The images are short exposures for deep-sky objects but you can clearly see the ring nebula in the 1st image and some nebulosity of the Eastern Veil Nebula in the 2nd image.

M57 The Ring Nebula.  Also catalogued as NGC 6720 is a planetary nebula in the northern constellation of Lyra.

 

NGC 6992 The Eastern Veil Nebula.  The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. 

Latest ExoClock transit observations by Simon Dawes – July & August 2024

Five more sets of observations for the ExoClock project by member & trustee Simon Dawes.

HAT-P-19 b is a gas giant exoplanet that orbits a K-type star. Its mass is 0.277 Jupiters, it takes 4 days to complete one orbit of its star, and is 0.04599 AU from its star. Its discovery was announced in 2010. Ref:https://science.nasa.gov/exoplanet-catalog/hat-p-19-b/

 

TOI-4087 b is a gas giant exoplanet that orbits an F-type star. Its mass is 0.73 Jupiters, it takes 3.2 days to complete one orbit of its star, and is 0.04469 AU from its star. Its discovery was announced in 2023. Ref:https://science.nasa.gov/exoplanet-catalog/toi-4087-b/

 

KELT-1 b is a gas giant exoplanet that orbits an F-type star. Its mass is 27.23 Jupiters, it takes 1.2 days to complete one orbit of its star, and is 0.02466 AU from its star. Its discovery was announced in 2012. Ref: https://science.nasa.gov/exoplanet-catalog/kelt-1-b/

 

KELT-16 b is a gas giant exoplanet that orbits an F-type star. Its mass is 2.75 Jupiters, it takes 1 days to complete one orbit of its star, and is 0.02044 AU from its star. Its discovery was announced in 2017. Ref: https://science.nasa.gov/exoplanet-catalog/kelt-16-b/

 

TOI-1431 b is a gas giant exoplanet that orbits an A-type star. Its mass is 3.12 Jupiters, it takes 2.7 days to complete one orbit of its star, and is 0.046 AU from its star. Its discovery was announced in 2021. Ref: https://science.nasa.gov/exoplanet-catalog/toi-1431-b/

 

Members trip to the South Downs Planetarium & Science Centre – 4th August 2024

On Sunday 4th August 2024 several CMHASD members went on a trip the South Downs Planetarium & Science Centre.  Below is an account of the day kindly written by member Gary Hunt with photos taken by members.

 

''With the decision by the membership to arrange an away-trip, long-term CMHASD friend and lecturer, Dr John Mason MBE, made a gracious offer host our visit to the recently renovated South Downs Planetarium.
 
Little did we know that CMHASD would be the FIRST to see the fully renovated centre and planetarium… I think it demonstrates, just how respected CMHASD is by the community. We are all very grateful to John, who was the consummate host and expert lecturer, and made ALL feel valued and welcome!
 
The membership, began the day by meeting for a wonderful lunch at the Cricketers at Duncton near Chichester. The pub has a stunning garden, and we had drinks there until we were called to our exclusive dining room. We were all delighted, to greet Dr. John Mason and his lovely wife Jane, at the pub and share lunch with them.
 
 
During a delicious repast, some of us sampled some good ales, we made our way to the Sir Patrick Moore Building, based in the grounds of Kingsham Farm, High School, where we were all greeted once again by by John.
 
 
 
After a brief introduction to the brand-new entrance and foyer, replenished with a souvenir shop, and display area. This was overseen by a life-size and frighteningly accurate wax-work of Sir Patrick Moore, supplied by Madame Tussauds, his personal desk, chair, brass telescope (his first brought by his mother when a child), typewriter and desk objet d'art… This was supplemented by numerous astronomical telescopes and instruments, and the beginnings or a multimedia projection system in the high-vaulted hall leading to the planetarium. This area was crowned with a three-metre diameter Moon… spectacular, indeed!
 
 
 
 
We were then all ushered into a lecture area and told more about the Centre, by the delightful and very hardworking, Meryl Goulbourne, what a credit she is to the Centre. The news included a recent award gifted by King Charles III. Following this we were escorted to the Planetarium itself for an hour long, tour de force presentation on the mysteries of Dark Matter by John himself.
 
John certainly knew his stuff… But before we got to the main subject, John took us through the amazing simulation of the night sky as it would be later that night in Chichester, then Selsey (Sir Patrick’s home town), and the dark skies park of the South Downs. This was followed by looking at constellations as we headed via the equator until we were observing the Southern Hemisphere (e.g. New Zealand)
 
 
As we then moved onto the mind-boggling issue of Dark Matter, and it’s effect on deep space objects, we were regaled with the latest technical news of how astronomers are trying to prove that Dark Matter exists? I was amazed at just how knowledgeable John is, particularly as he was presenting from memory, and proven by just how dark it was in the planetarium!
 
 
As the presentation ended, it then came to a Q&A session, needless to say that John had made his presentation so complete, that there wasn’t much CMHASD members could ‘try to catch him out on’ 😆! A superb lecture, that the membership was privileged to witness. But that wasn’t all… John then proceeded to answer technical questions about the Planetarium dome, its structure and construction… followed by an high-end engineering standard of knowledge regarding the Viewlex-Minolta S-IIb star projector and its other video adaptions… Even a mention about the (far to comfortable!) club class airliner seating (still with ashtrays in situ)!
 
 
All CMHASD members were very grateful for such an outstanding presentation, and warm hosting by John, Meryl and the staff.
 
There followed refreshments and discussion, for an hour or so thereafter… wonderful company, and a wonderful experience.
 
I have no hesitation in recommending a visit, for newbies or experienced astronomers, alike, or indeed, a revisit to the South Downs Planetarium and Science Centre…. Not only well worth supporting to keep it going, but to highlight a very bright star in heart of Sussex!
 
and finally, I would like to say a very big Thank you to Rita Whiting for organising such a wonderful trip.  It was superb!''

1st August 2024 – Thunderhead

As Astronomers we observe weather conditions regularly and on the 1st August 2024 a stunning time-lapse video was taken by member Honor Wheeler of a Thunderhead.  The video was taken from Dartford.  A thunderhead is a cumulonimbus cloud seen during a thunderstorm.  Towering cumulonimbus clouds, often called thunderclouds, are the only cloud formation capable of generating hail, thunder, and lightning. These dramatic, multi-layered cloud structures extend high into the sky, taking on an ominous, menacing appearance.

Honor used a Canon M6II on a tripod, Rokinon 12mm lens, at f/8, ISO400. A total of 300 photos with a 5 sec interval.

[video width="1920" height="1080" mp4="https://crayfordmanorastro.com/wp-content/uploads/2024/09/Storm_01082024HW.mp4"][/video]

 

For more information about thunderstorms see:

https://www.metoffice.gov.uk/weather/learn-about/weather/types-of-weather/thunder-and-lightning/what-causes-thunder-lightning

https://www.metoffice.gov.uk/weather/learn-about/weather/types-of-weather/clouds/low-level-clouds/cumulonimbus#:~:text=What%20are%20cumulonimbus%20clouds%3F,produce%20hail%2C%20thunder%20and%20lightning.

https://www.rmets.org/metmatters/life-cycle-thunderstorm

Summer Solstice Sun – 20th June 2024

NEVER LOOK AT THE SUN DIRECTLY. Please click here for solar observing safely.

A fantastic photo of our Sun as it set taken by member Honor Wheeler from Weybourne Beach, Norfolk on the 20th June 2024.  Massive sunspots can be seen at the 5 O'Clock position on the Sun. This image will also be found in the July edition of 'The Astronomer'. Well done Honor; it is indeed a super image.

 

 

Earlier in the day on the 20th Dr Mike Rushton took this great image of the Sun using his Dwarf II smartscope.

Below for comparison; is a screenshot of the Sun on the 20th June 2024 with the Sunspots numbered taken from Spaceweather.com

 

Then on the day after; on the 21st member Jim Burchell took this superb image of the Sun.

 

 

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