Search found 1280 matches

by rwilkinson
Tue Jun 25, 2019 8:43 am
Forum: Club events
Topic: 2nd July - an evening of rockets!
Replies: 2
Views: 158

Re: 2nd July - an evening of rockets!

And here's one which recalls a time when Britain had its own rocket programme - the BLACK ARROW which launched our Prospero satellite in 1971:
BlackArrow.jpg
BlackArrow.jpg (143.27 KiB) Viewed 8 times
by rwilkinson
Mon Jun 24, 2019 10:40 am
Forum: Physics, Space Science and Theories
Topic: "13 Minutes to the Moon"
Replies: 6
Views: 432

Re: "13 Minutes to the Moon"

Episode 7 is all about the "third man": Apollo 11 's Command Module Pilot Mike Collins : https://www.bbc.co.uk/sounds/play/w3csz4dq He says that his participation in the mission was "10% shrewd judgement and 90% luck" - and only got into NASA's astronaut selection at the second attempt. The programm...
by rwilkinson
Fri Jun 21, 2019 1:30 pm
Forum: Astrophotography
Topic: Dr. Robin Glover on digital imaging
Replies: 0
Views: 30

Dr. Robin Glover on digital imaging

At the recent Practical Astronomy Show 2019 , Dr. Robin Glover (a physicist and software developer who created the SharpCap program) gave a 50-minute talk about the niceties of long-exposure digital imaging, particularly with modern CMOS microlens sensors: https://www.youtube.com/watch?v=3RH93UvP358...
by rwilkinson
Wed Jun 19, 2019 12:33 pm
Forum: Club events
Topic: 2nd July - an evening of rockets!
Replies: 2
Views: 158

Re: 2nd July - an evening of rockets!

Here's one of my rockets after painting:
FGRS.jpg
FGRS.jpg (145.43 KiB) Viewed 79 times
this one was inspired by "Dr. Zarkov's rocket-ship" from the Republic Pictures "Flash Gordon" serials in the 1930s.
by rwilkinson
Tue Jun 18, 2019 7:17 am
Forum: Physics, Space Science and Theories
Topic: "13 Minutes to the Moon"
Replies: 6
Views: 432

Re: "13 Minutes to the Moon"

Episode 6 https://www.bbc.co.uk/sounds/play/w3csz4dp covers Apollo 8 , and includes interviews with astronauts Frank Borman, Lim Lovell & Bill Anders . This was such an audacious mission that Anders told his wife that he had a one in three chance of not making it back alive - but this was about the ...
by rwilkinson
Mon Jun 10, 2019 11:00 am
Forum: Physics, Space Science and Theories
Topic: "13 Minutes to the Moon"
Replies: 6
Views: 432

Re: "13 Minutes to the Moon"

Episode 5 is all about the Apollo Guidance Computer - the " fourth astronaut " on each mission. This was the world's first portable digital programmable computer, and the first electronic flight-control system. As well as shrinking a computer from the size of a room down to that of a couple of shoe-...
by rwilkinson
Thu Jun 06, 2019 3:13 pm
Forum: Club events
Topic: 2nd July - an evening of rockets!
Replies: 2
Views: 158

2nd July - an evening of rockets!

At our July meeting we're planning to celebrate the 50th anniversary of Apollo 11 by launching our own "rockets". But for our version of the Jet Propulsion Laboratory we'll just be fuelling them with water (and compressed air) , rather than high explosives! I've just been testing my own home-made la...
by rwilkinson
Wed Jun 05, 2019 2:53 pm
Forum: Physics, Space Science and Theories
Topic: "13 Minutes to the Moon"
Replies: 6
Views: 432

Re: "13 Minutes to the Moon"

Episode Four includes the catastrophic fire of Apollo 1, and then the successful test-flight of Apollo 7 just 21 months later:
https://www.bbc.co.uk/programmes/w3csz4dm
by rwilkinson
Mon May 27, 2019 3:23 pm
Forum: Physics, Space Science and Theories
Topic: "13 Minutes to the Moon"
Replies: 6
Views: 432

Re: "13 Minutes to the Moon"

The third episode is now available: https://www.bbc.co.uk/programmes/w3csz4dl This covers the extraordinary design of the Grumman Lunar Excursion Module ("it looks like an angry creature with four legs, staring at you, daring you to call it ugly!") and its landing procedures. As Neil Armstrong said ...
by rwilkinson
Sat May 25, 2019 6:49 am
Forum: Physics, Space Science and Theories
Topic: "13 Minutes to the Moon"
Replies: 6
Views: 432

Re: "13 Minutes to the Moon"

The second episode https://www.bbc.co.uk/programmes/w3csz4dk features interviews with some of the young men who operated the Mission Control Center and explains how their response to the Guidance Computer's infamous Program Alarms was only formulated after the final practice simulation, a fortnight ...