




Announcements
Congratulations Janice McClean
A huge congratulations to our member Janice McClean on becoming the new president of the British Astronomical Association (BAA). Her appointment was confirmed at the BAA’s AGM meeting on the 30th October 2024.
Face-to-Face Meetings Every Thursday
Face to face meetings every Thursday plus we are live on Zoom*
As a courtesy to others please stay at home and attend via the zoom if you are feeling unwell – coughs, sniffs and sneezes etc.
* zoom will only be available with the lecturer’s consent.
Gallery
A selection of images, photos and observations taken by CMHASD members
Other Images
Sun | Comets | Mercury | Venus | Atmospheric Optics | Meteors | Auroa and NLC | Moon | Minor Planets | Mars | Jupiter | Saturn | Uranus | Neptune | Messier | Caldwell | All Deep Sky | Conjunctions | Transits | Solar Eclipse | Lunar Eclipse | Wide Field |ISS & Space Junk | Exo-Planets
Society News
SAO28567: One that got away – BAAVSS circular
CMHASD Trustee John Howarth has been thanked for his help in a paper called SAO28567: One that got away published in a recent edition of the BAAVSS, written by Chris Lloyd of the RAL.
John said ”Chris originally suggested to Roger Pickard and Malcolm Gough that this would be a good object for the APT, as there had been a conflicting observation and they passed their data to me for analysis. Subsequently the star was shown to be a double and was being pulled out of shape by the gravity of its companion, hence the variability. I still had the data, so was able to send it to Chris Lloyd for his analysis, and the paper shows this.
I was pleased to be mentioned but it is also a great tribute to the Jack Ells APT and its operators. Timely too, because we are currently trying to find a permanent home for the APT, or at least for its photometer.”
To view the paper click on the link below to download the edition of the BAAVSS circular that has the paper in it.
Friday 3rd January 2025
NEVER LOOK AT THE SUN DIRECTLY. Please click here for solar observing safely.
A superb selection of member images taken on Friday 3rd January 2025.
The Sun at midday taken by Dr Mike Rushton taken using a Dwarf II smart scope. 20 x 1/250 sec at Gain 0 with a ND6 solar filter.
The Sun taken by Honor Wheeler
The Sun taken by Jim Burchell
The Pleiades by Dr Mike Rushton using a Dwarf II smart scope. 200 x 10sec exposures at Gain 60.
Crescent Moon and Venus taken by Honor Wheeler. Venus is top right of the Moon.
Saturn, Venus and the Moon taken by Honor Wheeler. Venus is top right of the Moon and Saturn is near the top left corner of the image.
CMHASD at Wentworth Primary School – Jan 2025
On Wednesday, January 8th, members of the Society visited Wentworth Junior School in Crayford for an evening of stargazing. Unfortunately, poor weather prevented outdoor stargazing, so the event moved indoors. Despite this, the pupils remained enthusiastic, engaging with the activities and asking questions about telescopes, meteors, the phases of the Moon, and the solar system. The pupils were also fascinated by images of recent auroral activity. Overall, it was a rewarding and enjoyable evening for everyone involved.
Wentworth School wrote in their newsletter ”Our year 5 children welcomed the Crayford Astronomy group to school. They came armed with different telescopes and a mountain of knowledge! This happened to fall on the day that snow was predicted. With snow comes clouds and limited visuals and therefore a tweak to the proceedings. The children experimented by looking at a model of Jupiter, and saw a variety of pictures of the sun, moons and planets that had been taken throughout the South East of England. They also learnt about the orientation, facts and amount of moons and other features you find in space. We even discovered that there was an asteroid named Wentworth! This was a thoroughly enjoyable evening arranged by the astronomy group and we are extremely grateful that they could share their expertise!”
CMHASD Chairman John Archer wrote ”Last night (Wed’s 8th) a group of us returned to Wentworth Primary School, not far from Crayford, to educate and entertain the pupils. There were telescopes on display, activities in the gym & hall as well as a presentation on the night sky and member Aurora images. The teaching staff were delighted with how things went, and hoped we will return next year, (perhaps with clear skies).
I wanted to thank those who braved the sleet, and gave up their evening to share their interest and knowledge of astronomy with the younger generation – It’s entirely possible that the next generation of space explorers or alien life discoverers were with us last night – stranger things have happened!”
Below is a wonderful card made by the pupils in appreciation of our visit last week despite the horrible weather.
The Heart Nebula by Kevin Langford – Jan 2025
This is an absolutely stunning image of the Heart Nebula captured by member Kevin Langford over 2 nights on the 7th and 9th Jan 2025 from Bexley, Kent.
The Heart Nebula (also known as the Running Dog Nebula and Sharpless 2-190) is an emission nebula, 7,500 light-years away from Earth and located in the constellation Cassiopeia. The nebula spans almost 2 degrees in the sky, covering an area four times that of the diameter of the full moon. It was discovered by William Herschel on 3 November 1787.
”The brightest part of the nebula (a knot at its western edge) is separately classified as NGC 896, because it was the first part of the nebula to be discovered. The nebula’s intense red output and its morphology are driven by the radiation emanating from a small group of hot stars near the nebula’s center. This open cluster of stars, known as Collinder 26, Melotte 15, or IC 1805, contains a few bright stars nearly 50 times the mass of the Sun, and many more dim stars that are only a fraction of the Solar mass.” Ref:https://en.wikipedia.org/wiki/Heart_Nebula
Kevin acquired his image using:
ES 102ED APO, 0.7x focal reducer corrector, and EQ5 Pro.
ZWO ASI071, and Orion MMAG,L-eNhance filter.
7.5 Hrs of exposures.
Number of images taken 150 x 180sec.
Software used:
Sirilic to stack images.
Siril to processes image.
Affinity Photo 2 to finish.
Check out Kevin’s flickr page at https://www.flickr.com/photos/77708720@N08/ to see more of his fantastic images.
Thursday 2nd Jan 2025











Lunar Corona by Honor Wheeler – 15th Dec 2024
Light cloud passing over the Moon; producing some rather spectacular Lunar Corona were caught on camera by Honor Wheeler on the 15th Dec 2024. One of Honor’s images also made it to the front page on spaceweather.com😁 It was the last Full Moon of 2024 too and known as the ‘Cold Moon’.
Sun & Moon – 14th Dec 2024
NEVER LOOK AT THE SUN DIRECTLY. Please click here for solar observing safely.
A stunning set of images of the Sun by Honor Wheeler and a beautiful one of the Moon by Jim Burchell taken on the 14th Dec 2024.
The Sun by Honor Wheeler
Honor said ”I’ve had about 20 mins in-between the cloud to capture the Sun in white light with my ED80 refractor and the Sun in H-alpha. In H-alpha there is a massive prominence visible which took me by surprise when I got the camera on it. Shame I can’t follow the sun for longer as a neighbours tree and cloud are in the way.”
The combined image of the sun; with the H-alpha image inverted and then the white light disc added.
The Moon by Jim Burchell
A very atmospheric photo of a Waxing Gibbous Moon which was 13.58 days old and 99.76% illuminated.
First Quarter Moon by Neil Webster – 6th Jan 2025
A fantastic mosaic image of the Moon taken by member Neil Webster on the 6th Jan 2025. The Moon was 6.85 days old and 47.8% illuminated.
Below are the individual frames from the mosaic.
Neil acquired the images using an AA 115mm apo, EQ6 R, ZWO ASI 290MM, and a Astronomik R/IR filter.
Processed using Firecapture, AutoStakkert, PS, and Microsoft ICE.
8 frames (each 90 x 33fps). 20% selected by AS.
Check out Neil’s flickr page at: https://www.flickr.com/photos/137388222@N05/
IC 410 The Tadpole Nebula and IC 405 The Flaming Star Nebula by Neil Webster – 3rd Jan 2025
A superb image of IC 410 The Tadpole Nebula (left) and IC 405 The Flaming Star Nebula (right) by member Neil Webster taken on the 3rd Jan 2025.
”IC 410 is a cosmic cloud that looks like tadpoles swimming through the cosmos.
IC 410 is located 12,000 lightyears from Earth in the Auriga constellation, and is nicknamed the Tadpole Nebula because of the tadpole-shaped clouds of dark dust that appear to be swimming towards the centre. The Tadpole Nebula is a region of ionised hydrogen gas spanning over 100 lightyears across that’s carved and sculpted by streams of charged particles called stellar winds emanating from open star cluster NGC 1893. NGC 1893 is about 4 million years old: the blink of an eye in cosmic terms. The ‘tadpoles’ that give the nebula its nickname are dense streams of dust and gas about 10 lightyears long that may well be sites of star formation.” Ref: https://www.skyatnightmagazine.com/astrophotography/nebulae/tadpole-nebula-ic-410
located near the emission nebula IC 410, is IC 405 (also known as the Flaming Star Nebula, SH 2-229, or Caldwell 31). IC 405 is an emission and reflection nebula that surrounds the bluish, irregular variable star AE Aurigae.
Neil acquired his image using a WO GT71 Apo, EQ6 R, ZWO ASI 294MC Pro Optolong L Enhance filter, Astro Essentials 50mm guide scope, and a ZWO ASI 290MM guide camera.
Processed using APT, PHD, Nebulosity and Photoshop.
58 x 240s Subs, 45 x 0.015s Flats/Bias.
Note: Neil suffered a power cut just before taking the Darks so noise reduction was applied liberally.
Check out Neil’s flickr page at https://www.flickr.com/photos/137388222@N05/with/54245664968/ to see a higher resolution image.
CMHASD supporting the BAA at New Scientist Live – ExCel London, October 2024




Comet C/2023 A3 Tsuchinshan Atlas by Jim Burchell – Oct 2024






CMHASD Christmas Quiz – 2024
CMHASD members David Grist and Steve Floodgate pulled out all the stops to provide a night of head scratching, puzzlement and fun. Thank you Dave & Steve for all your hard work & effort creating the quiz. It was a great night and we are all looking forward to the next one!
Chairman John Archer wrote ”The Christmas Quiz was a great success – the men in brown coats did a splendid job and there was a very wide range of astronomy-related questions to contend with. Thank you Steve and Dave for the time you put into it, and to those who recorded the questions for those who couldn’t join us on the night.”
Congratulations to Neil Webster for winning the best Christmas jumper 🙂
Congratulations to the winning team ‘Positive Thinking’ 🙂
Aurora – 10/11th October 2024
On the night of the 10/11th October 2024 several CMHASD members all over the UK looked up at the sky and watched in amazement at another Aurora display!!!!
Below is a slideshow of a presentation that CMHASD member Sonia put together showing some of the stunning images members had taken that night. Some of the photographs taken by members show vivid colours but to most naked eye observers the colours were not so obvious due to light pollution.
CMHASD Stargazing at Hall Place, Bexley – Wed 13th Nov 2024
On Wednesday 13th November 2024, CMHASD were back at Hall Place & Gardens to hold a star gazing event from 7pm to 9pm. We had brilliant support from our members who bought along a variety of telescopes, cameras, meteorites and other displays for our guests.
CMHASD Chairman John Archer wrote ”Firstly I wanted to extend my gratitude to everyone who supported our Stargazing event last week. We were extremely lucky that it was dry and mostly clear, albeit with a bit of high level haze, but nothing to prevent observations. We had a wide range of scopes for the public to try for size. Everything from smart scopes, to refractors and a couple of the Society Dob’s. The evening was a sell-out and everyone went away happy. Pretty much everyone had a chance to observe Jupiter (and her moons), Saturn and the Moon, which was eye-wateringly bright of course. The evening went very smoothly, a couple of talks, a smashing comet-making demo (thank you Debra) and lots and lots of Stargazing which seems to be the one thing the visitors were so looking forward to. For everyone who helped – thank you so much. We go again in 2025!”
Our next Star Gazing at Hall Place event is on the 5th February 2025.
Latest ExoClock Transits
Some more Exoplanet transits for the ExoClock project:...
Hunter’s Supermoon – by Honor Wheeler
This is a lovely image of the largest and brightest Full Moon of 2024 that lit up the skies of Earth on the 17th Oct, taken by member Honor Wheeler from Dartford whilst waiting for the comet C/2023 A3 Tsuchinshan-Atlas to made an appearance. This Full Moon is also...
Timelapse video of Comet C/2023 A3 Tsuchinshan-Atlas by Honor Wheeler
A superb timelapse video created by Honor Wheeler of Comet C/2023 A3 Tsuchinshan – Atlas on the 12th Oct 2024....
Moon – 24th Oct 2024 by Neil Webster
A stunning image of a waning gibbous Moon by Neil Webster taken at 6.45am on the 24th Oct 2024. The Moon was 51.0% illuminated and 21.46 days old. Neil acquired the image by using a AA115 Apo, EQ6 R, ZWO ASI 290MM, and Astronomik R/IR Filter. Check out...
Elephant’s Trunk Nebula (IC1396A) – Oct 12th 2024 by Neil Webster
A super image of the Elephant’s Trunk Nebula (IC1396A) taken by member Neil Webster on Oct 12th 2024. The Elephant’s Trunk Nebula is a concentration of interstellar gas and dust within the much larger ionized gas region called IC 1396 which is...
Comet C2023 A3 Tsuchinshan-ATLAS by Honor Wheeler – 12th Oct 2024
Four members of CMHASD; John Archer, Gary Hunt, Jo Southgate and Honor Wheeler met up at Top Dartford Road at around 18:30 to see if they could spot comet C2023 A3 Tsuchinshan – ATLAS on the 12th Oct 2024. The rain cleared just in time and the sky was...
Comet C/2023 A3 (Tsuchinshan–ATLAS) by member Jim Burchell – 15th May 2024
A great image capturing Comet C/2023 A3 (Tsuchinshan–ATLAS) by member Jim Burchell from Swanley. Jim said ‘‘I took this image on the evening of 15th of May when the Comet was in the constellation of Virgo with my Seestar S50. As you see the Comet is...
The Sun by Jim Burchell on the 4th October 2024
NEVER LOOK AT THE SUN DIRECTLY. Please click here for solar observing safely. A super image of our Sun taken by member Jim Burchell on the morning of the 4th October 2024. As you can see the Sun was very active with many sunspots including...
Perseid Meteor Watch – 10th/11thAugust 2024
When you sit back to watch the Perseid meteor shower, you’re actually seeing pieces of comet debris heat up as they enter Earth’s atmosphere and burn up in a bright burst of light, streaking a vivid path across the sky as they travel at 37 miles (59...
Shears Green Junior School Cosmic Camp – 27th Sept 2024
On Friday 27th September 2024 several CMHASD members helped out at Shears Green Junior School Cosmic Camp. Chairman John Archer wrote ”First of all I really want to thank all of the team who supported our evening of outreach last Friday 27th. Once...