CMHASD Christmas Quiz Night 2022

 

It was a brilliant quiz and a great night was had by all!  Member's David Grist and Steve Floodgate aka Eric 'n' Ern once again pulled out all the stops to provide another night of head scratching, puzzlement and fun. 

Below are some photos and a video of the evening taken by Chairman John Archer. Thank you John.

Plus a big ‘Thank you’ to Dave & Steve for all your hard work & effort creating the quiz.  We are all looking forward to the next one!

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Stunning Sun Halo

CMHASD member Jim Burchell captured this superb Sun Halo on the 14th Dec 2022 around midday which lasted for quite a long time - over an hour. A Sun halo, also known as '22 degree halo', is an optical atmospheric phenomenon that occurs due to sunlight refracting in millions of hexagonal ice crystals suspended in the atmosphere. 

More information about how Sun Halo's are formed can be found on the Atmospheric Optics website.

CMHASD at the BAA Christmas Meeting – 2022 Dec 10

Nine CMHASD members attended the BAA Christmas meeting on the 10th December 2022, held at the Institute of Physics.

A recording of the meeting is available to watch here on the BAA YouTube channel.

Below are the times of the talks in the recording. Please be aware the sound is a little quiet at times so you will need to turn up the sound up. Talks particular of interest to our Society are in bold; as they have CMHASD member 'participation' :-)

 

Start – David Arditti, BAA President – Welcome, notices and awards - Here you will see CMHASD trustees Martin Crow and Simon Dawes collect their BAA Sir Patrick Moore award for their contributions to the ExoClock Project.

0h 27m – Tim Parsons – A Massive Star Menagerie: touring through the upper reaches of the H-R Diagram

1h 25m – Simon Kidd – Asteroid Occultations….an observer’s view

2h 8m – Nick James – Sky Notes - Here you will see CMHASD member Honor Wheeler's Moon image displayed during Nick's talk and a photo of a model of Jupiter that was used at the News Scientist Live exhibition 2022.  CMHASD member Janice McClean, who is the BAA Events Manager and several other CMHASD members helped run the BAA stand at the exhibition over the 3 days.

 

After the meeting for those who wished to partake - members were invited the BAA Christmas social, taking place in the Hubble Room at The Astronomer pub near Liverpool Street Station.  Several CMHASD members took up the invite :-D  I wonder who was one of the members?

Below are more photos of the day taken by CMHASD Chairperson John Archer & CMHASD Trustee John Howarth.  Thank you for sharing your photos with us.

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CMHASD Star Gazing at Hall Place & Gardens – 2022, Nov 30.

On Wednesday 30th November 2022, CMHASD were back at Hall Place & Gardens to hold a star gazing event.  We had brilliant support from our members – thanks to all – who bought along a variety of telescopes, cameras, meteorites and other displays for our guests.

 

We had over 33 ticket-holders to entertain and those who arrived early did catch sight of Jupiter, Mars and the Moon.

We ran through a handful of short talks – including a review of popular astronomy apps by Marc and a talk from Debra on Comets, followed by a successful comet-making demo to an enthralled audience.

Further gaps in the clouds allowed visitors another chance to observe with us. It’s always rewarding to hear the “oohs and aahs” of a first-time view of Jupiter’s moons through a decent scope. The Society Dob’s are just brilliant at that.

So thank you to the whole crew (you know who you are) for setting up, interacting, educating and closing down the show. It was very successful indeed.

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Congratulations to Martin Crow & Simon Dawes

A huge congratulations to CMHASD trustees Martin Crow and Simon Dawes for jointly winning the BAA Sir Patrick Moore Prize for Pro-Am work on Exoplanet observations with the ExoClock project along with a Mr Adrian Jones.

Below is a photo of Martin and Simon being presented with their certificates by the President of the BAA David Arditti on Saturday 10th December 2022 at the BAA Christmas Meeting. 

   From left to right: David Arditti, Adrian Jones, Martin Crow & Simon Dawes.

BAA ExoPlanet & ExoClock training videos of which 2 are by CMHASD members.

The videos from the British Astronomical Association (BAA) Exoplanet Division Online Workshop held on Saturday 12th November are now available to watch on the BAA YouTube Channel.

The below talk titles are links to watch the videos. 

Two videos are by CMHASD members Rodney Buckland and Martin Crow.

Introduction by Roger Dymock

Exoplanet Division update
EXPLORE introduction

Ariel and ExoClock with Anastasia Kokori

Mission and observational efficiency
ExoClock – a model of pro-am collaboration

EXPLORE Part 1 – Detecting exoplanets with Rodney Buckland

Observation
Modelling
Searching databases
Zooniverse

How to discover an exoplanet (telescope and camera not required) with Roger Dymock

EXPLORE Part 2 with Martin Crow

Introduction to HOPS
Synchronous observations to detect shallow transits
Data mining transit observations for variable star photometry

AstroImageJ with Richard Lee

An alternative to HOPS

Click to download a zip of the User Guide for the Observation Planner for AstroImageJ and sample files.

Observing with robotic telescopes by Rodney Buckland

EXPLORE NEEDS EXPLORERS with Roger Dymock

 

Rodney's Video

Martin's Video

Sun dog

A shinning example of a Sundog captured by member Martin Crow when out and about on the 20th Nov 2022.

A Sundog (or sun dog) is an optical atmospheric phenomenon that causes a bright, rainbow-colored patch of light to occur on either side of the sun or both sides at an angle of 22 degrees.  Sun dogs occur as a result of the refraction or scattering of light from flat hexagonal-shaped ice crystals that are suspended in clouds.

In the most brilliant displays, when 2 Sundogs appear, it's as if there are now three suns in the sky -- the main sun and two little siblings.

These "side suns" are colloquially known as sun dogs, officially known as "parhelia," which is Greek for "next to the sun."

The Veil Nebula by Neil Webster

The latest stunning image of the Veil Nebula by member Neil Webster. Updated with another 3 hours worth of imaging grabbed on the night of the 21st Nov 2022.

Neil said ''I finally managed to get enough data to start to show the incredible subtle details in this object.  This was processed from 5 hrs of data amassed over 3 evenings.''

The Veil Nebula is a diffuse nebula located in the northern constellation Cygnus, the Swan.  It is the expanding remains of a massive star that exploded about 8,000 years ago.

Called the Veil Nebula, the debris is one of the best-known supernova remnants, deriving its name from its delicate, draped filamentary structures. The entire nebula is 110 light-years across, covering six full moons on the sky as seen from Earth.

It lies a few degrees to the south of the star Epsilon Cygni, also known as Aljanah.

Aljanah is one of the stars of the Northern Cross and marks the right wing of the celestial Swan. 

The Veil Nebula is also known as Witch’s Broom Nebula, Bridal Veil Nebula, Cirrus Nebula or Filamentary Nebula.  It is located approximately 1,470 light years from Earth.

The Veil Nebula has three main parts: the Eastern Veil, the Western Veil, and Fleming’s Triangle (Pickering’s Triangle). It has the designations NGC 6960, NGC 6992, NGC 6995, NGC 6974 and NGC 6979 in the New General Catalogue.  The southernmost part of the Eastern Veil Nebula is assigned the catalogue designation IC 1340.

To see a more detailed view of this image check out Neil's Flickr page at https://www.flickr.com/photos/137388222@N05/52515415329/

Partial Solar Eclipse – 2022 Oct 25 – Open Morning at the Pavilion

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

On Tuesday 25th October 2022, CMHASD held an Open Morning at the Parsonage Lane Pavilion for members & members of the public to view the rare spectacle of a Partial Solar Eclipse visible from the UK.

It turned out to be an absolutely fantastic day and one that people who were there will not forget.

It was a warm sunny day with clear skies at the start of the partial eclipse and come 10.09am BST we were rewarded with the first views of the Moon partially obscuring the Sun.

Members used a variety of safe techniques to view & image the partial eclipse for nearly 1 1/2 hours (with a few breaks due to cloud cover) until a little after 11.30am when it started to rain.

The setup shown below is using the image projection method with a 4 1/2'' Tal Newtonian reflector.

 

  

Member Gary Hunt who was present that day at the pavilion and took many of photos used in this post wrote "Whenever there is an astronomical event in our locality of the UK, CMHASD is pleased to take the opportunity to share with the public the wonders of the Universe. The morning of Tuesday 25th 2022 was such an opportunity as we were treated to a partial eclipse of the sun. This is quite a rare phenomenon for the UK and even a few tens of miles can make a big difference to what you will see. Sadly for our observatory and home that is the ‘Pavilion’ in Sutton-at-Hone Dartford this would be only be around 15% covering of the sun in the nearly two hour solar eclipse by the Moon, but with the aid of SAFE observing techniques and equipment provided by CMHASD members we were able to demonstrate and explain to our visitors just what was happening. Besides the eclipse, and with most of our telescopes we were able to see two sets of sun spots and even a few solar prominences. The sun was visible until the last half-an-hour when clouds and some spots of rain spoiled our observing session, but we were lucky that most of the best parts of the eclipse was pretty cloud free! We had a small, but enthusiastic number of guests come along to observe the eclipse, and I can confidently claim that they were all suitably impressed with their experience. We had challenges that day because on the Sunday before, a thunder storm knocked out electrical power supply to the Pavilion and so we had no lighting or power for hospitality for our guests, however we used thermos flasks of tea/coffee and generous Society members brought along some cakes, so I think we were forgiven? All-in-all, I would judge that we had a successful solar/eclipse public out-reach session and guests and members enjoyed the solar-show immensely."

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Below are a collection images of the partial solar eclipse including a time lapse video by members who were at the pavilion.............

 

Jim Burchell

All 6 of Jim's superb images were taken with a Pentax KP attached to an Altair Astro 102 Refactor using a white light Solar filter. Image's then coloured using Snapseed. 

Image 1 start of the eclipse.  Iso 200 1/200 sec F7.5 approx 

Image 2 roughly mid eclipse. Iso 200 1/250 sec 

Image 3  a couple of minutes before the end of the eclipse. 
ISO 200 1/160 sec.

This image was taken roughly mid eclipse and shows more surface detail than Jim's other images.

A very atmospheric image of the partial eclipse near the end.

 

 

Diane Clarke

Diane Clarke's stunning image has been rotated to match event and also shows sun spots 3126, 3130 & 3131.  Diane acquired the image using a Camera EOS M50m2 at ISO  400 @ 1/2000 Sec. Jpeg from RAW.

 

Mike Rushton

Dr. Mike Rushton's super image was taken just before clouds intervened at about maximum eclipse time.  Mike acquired the image using a Canon EOS 60D Lens: EF70-300mm f/4-f/5.6 IS USM, Focal length 300m f/8 1/500s ISO 200.

Below is a time lapse video of the partial solar eclipse put together by Mike.

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Meanwhile members who were unable to be at the pavilion acquired these images below of the partial eclipse at various locations around Bexley including a time lapse video......

 

Simon Dawes

Details of how Simon acquired the image are on his photo.

Member Simon Dawes who was at home that morning wrote ''I hadn't intended observing the partial solar eclipse,  my plan had been to process some exoplanet data from the the night before but the day started out so nice and cloud free, I thought why not.  As I was setting up I heard that one of our members wouldn't be able to see it, they were isolating due to COVID.  So armed with a connection on my mobile phone and the societies Zoom details I set up an impromptu zoom stream to share my observatory PC so that anyone wanting to see it that couldn't get to the pavilion would be able to.''

Below are a couple of images of the partial solar eclipse broadcast via Zoom set up by Simon and a time lapse video of the eclipse.

 

Janice McClean

Member Janice imaged the partial eclipse until the rain came.  Details of how Janice acquired her great images are on the photos.

 

 

Terry Miles

Terry Miles super set of images were acquired using a Coronado Personal Solar Telescope (PST) using a 8mm-24mm zoom and an  iPhone 13.

 

Some members who were at work that day managed to get some images too........

 

John Archer

In the City of London CMHASD Chairman John took this image.

 

Honor Wheeler

On a tea break at work Honor took this image using a BAA solar viewer with her phone.

 

And those members who live further a field shared their images they got of the partial solar eclipse also.

 

Martin Crow

Martin took this image of the partial eclipse showing some sunspots too from Burnham-on-Crouch, Essex. Shot using a DSLR 550d, 200mm lens with an astro solar filter, iso 100 & shutter speed 1/15sec.

 

Stephen Cohen

Stephen took this image from Cumbria using an iPhone through Mylar film.

 

CMHASD would like to say a big thank you to Gary Hunt, Diane Clarke, Dr. Mike Rushton and John Archer for organising the day and to the members who shared their photos & images. Absolutely brilliant!

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