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Grant last won the day on March 28 2019

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  1. We have the pleasure of welcoming back Mary McIntyre FRAS of http://www.marymcintyreastronomy.co.uk/ this week to give her talk 'A History of Women in Astronomy'. Mary is an amateur astronomer and astronomy communicator based in Oxfordshire, UK. She is a keen astrophotographer and astronomy sketcher and is a Fellow of the Royal Astronomical Society. She has a busy talks schedule and also writes for Sky at Night Magazine and the Yearbook of Astronomy, is a co-presenter of the Comet Watch radio show and recently joined the Astro Radio team. ”A History of Women in Astronomy” – historica
  2. This week we are very pleased to welcome back Paul Money of http://www.astrospace.co.uk/. Paul is very well known for his extensive talks and as review editor for BBC Sky at Night magazine. He also publishes his yearly 'NightScenes' sky guide - an extremely useful book! Paul is going to give us his talk 'Why there are no green stars'. This talk explores how we see and perceive colour and why when we view the stars, there appear to be no green stars out there! Paul is one of my favourite astro speakers - If you've not seen one of his talks before you are in for a treat, there are few
  3. We've just released the latest set of data from the Ikarus Observatory project here. Following the wonderful entries from the first and second processing competitions we are running another to see who can get the most from this data and create the 'best' image! The winner will receive £150 of First Light Optics gift vouchers and two runners up will receive £50 of gift vouchers. Details below: Closing date: 3rd May 2021 @ 22:00 Please post your entries into this thread Please only use the data we've released - don't blend it with other data or add to it with other so
  4. Our latest released of data from the Ikarus Observatory project The small print: We will be releasing all public data from the Ikarus Observatory project under a Creative Commons Attribution-NonCommercial licence. What this means is you are free to share, copy and redistribute the data as you see fit and adapt, remix, transform and build upon it but you must attribute 'Ikarus Observatory' as the source of the original data and must not use it for commercial purposes - i.e. no sticking images on the side of mugs and selling then Beyond that, enjoy and have fun! You can fi
  5. Thanks everybody who took part in this competition - our first LRGB data set You can see all the entries here, the data is still available here if you want to have a play. The winners are: Winner - Xiga Runner Up: Gorann Runner Up: Ollypenrice Congratulations all!
  6. It is a great pleasure to welcome back (again!) to SGL Dave Eagle of https://www.star-gazing.co.uk/ to set us some more observing and imaging challenges for Late Spring / Early Summer. Dave is an amateur Astronomer, Planetarium Operator, Presenter, Author and Tutor, you may have read some of his books or come across one of his talks before. Dave is going to treat us to an overview of interesting upcoming observing targets and challenges These sessions are always fun and informative so hope to see you Sunday! Meeting details below: Topic: EP43 - Sunday, 11th April 2021 7:30
  7. A general overview / getting started with EKOS / KStars would be a good starting point I think, you can share screen in Zoom and it works nicely.
  8. Yes please!!! That would be awesome
  9. We're having a week off from StarGaZine this week so we will announce the winners on Tuesday instead Happy long bank holiday weekend everybody!
  10. Thanks very much to @JulianO for a superb and very interesting talk For those who missed it, recording below:
  11. Your only going to see the last reflection back to the sensor with this formula. I can't see a way to go further than that without knowing more about the placement of the other optical elements in the train - that can often be enough though to start diagonosing the issue. This method is more useful / commonly used for finding dust motes though. If you know of a different method though, I'm up for having a go at building a calculator for it.
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