Society News – Page 33 – Crayford Manor House Astronomical Society Dartford

A superb composite image showing part of tonight's bright 19.46 International Space Station (ISS) pass taken by Diane Clarke.

Diane said 'This is a composite image consisting of 3 x 10 sec images. I missed the start of the pass due to local roof lines obscuring my view but did manage to capture the 3 images that I put together to create this composite image. The gaps are due to the self timer to reduce/remove camera shake.'

Diane used a Canon M50m2 Tripod Mounted Sigma 18-250mm lens @ 18mm f4.5 10 sec @ ISO 100 to acquire the images.

The Sun – 23rd March 2022

23rd March 2022

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| 8:34 pm

Another great image of the Sun by Simon Dawes taken today from Bexleyheath. Details of how the image was acquired is written on the photo. Three sunspot groups are visible.

The Sun – 18th March 2022

23rd March 2022

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| 8:21 pm

A very nice image of the Sun with sun spots taken by Simon Dawes on the morning of the 18th March 2022 from Bexleyheath. Taken using a Baader solar safety filter, skywatcher 190mn telescope, ZWO ASI1600mm pro CMOS camera, mesu e200 MkII mount and sharpcap pro image capture software.

Lunar Halo – 15th March 2022

16th March 2022

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| 7:08 pm

A beautiful Lunar Halo last night photographed by members Jim Burchell and Gary Hunt.

Jim's photo above was taken around 9.30pm and Gary's photo below at 11.30pmish.

Sun dog, solar halo and circumzenithal arc

16th March 2022

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| 6:59 pm

A sun dog, solar halo and circumzenithal arc all seen by Martin Crow yesterday around 4.30pm.

Exoplanet TOI-1298b observations by Martin Crow

11th March 2022

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| 8:24 pm

These are the latest exoplanet observations by Martin Crow.

TOI-1298 b is a gas giant exoplanet that orbits a G-type star TOI -1298 in the constellation of Ursa Minor. Its mass is 0.356 Jupiters. It takes 4.5 days to complete one orbit of its star and is 0.059 AU from its star. TOI-1298 b was discovered by the Transiting Exoplanet Survey Satellite (TESS) observatory, in 2021-09.

Martin wrote ''The observations were done as part of the ExoClock synchronous observations group. This particular transit has a depth of <5 thousandths of a magnitude!! To get useful data for this target would require a telescope diameter of at least 400mm or greater. My telescope at 235mm is too small although the dip is clearly detectable buried in the noise. The aim of the project is to combine three or more data sets from similar sized small instruments taken on the same night to increase the accuracy to that achievable with a bigger telescope. This method will help to make otherwise impossible targets viable for the majority of instruments registered on the ExoClock project.''

Dobsonian Telescope Mount – flat pack

11th March 2022

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| 7:53 pm

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In this video Simon Dawes builds a Dobsonian telescope mount for Keith that folds flat for transport.

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Diane Clarke’s The Moon & M45 The Pleiades on the 8th March 2022

9th March 2022

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| 7:00 pm

A lovely image of the Moon 4.1° south of M45 taken on the 8th March 2022 by Diane Clarke.

Diane said ''I had my doubts about capturing this event due to the cloud forecast, but there were breaks starting to appear as 19.00 hrs approached, so I went to set up but there was a strong breeze forcing me to find a sheltered spot to stop my equipment suffering wind blast, the breeze was also making the clouds scud across the sky very quickly. So much so that any breaks in the cloud could disappear as quickly as they appeared the image was taken in one of these short lived break's in the cloud cover.''

Image Details: Camera EOS M50m2 using a 100mm Canon EF Lens.

2.5 sec's @ f5.6, ISO 2000, on a static tripod, with a 2 sec delay to remove camera shake.