Search found 1312 matches

by rwilkinson
Mon May 27, 2019 3:23 pm
Forum: Physics, Space Science and Theories
Topic: "13 Minutes to the Moon"
Replies: 11
Views: 4500

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: 11
Views: 4500

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 ...
by rwilkinson
Mon May 13, 2019 1:09 pm
Forum: Physics, Space Science and Theories
Topic: "13 Minutes to the Moon"
Replies: 11
Views: 4500

"13 Minutes to the Moon"

BBC World Service has compiled a series of podcasts to commemorate the 50th anniversary of Apollo 11.
The first 45-min episode has just been released: https://www.bbc.co.uk/programmes/w13xttx2
by rwilkinson
Thu Apr 18, 2019 12:49 pm
Forum: Astronomical events
Topic: BAA Star Count survey 2019
Replies: 2
Views: 2565

Re: BAA Star Count survey 2019

The results are out: https://www.cpre.org.uk/media-centre/latest-news-releases/item/5102-help-us-enjoy-starry-night-says-cpre-as-cosmic-census-reveals-scale-light-pollution Well over half of all participants (57%) failed to see more than ten stars, meaning that they are severely impacted by light po...
by rwilkinson
Wed Apr 10, 2019 6:52 am
Forum: Club events
Topic: Dark Matter - at Bolton School
Replies: 1
Views: 1857

Dark Matter - at Bolton School

This public lecture later this month should be of interest to our Members:
darkmatter.jpg
darkmatter.jpg (190.79 KiB) Viewed 1857 times
by rwilkinson
Wed Apr 03, 2019 3:56 pm
Forum: Physics, Space Science and Theories
Topic: Historical impact events?
Replies: 0
Views: 1931

Historical impact events?

Following Martin Lunn's talk last night, I found this Review Paper from 2007 which neatly summarises the ideas about "unreported" impact events in recorded history and the observations from tree-rings and ice-cores:
http://tsun.sscc.ru/hiwg/pabl/baillie_2007_jqs.pdf
by rwilkinson
Fri Mar 29, 2019 9:25 am
Forum: Astronomical events
Topic: Flaring up?
Replies: 0
Views: 1894

Flaring up?

Last night, during the course of some tests with an 18mm lens, I captured a transient event near Cassiopeia : flare.jpg This occurred during a 30-sec exposure just before 9pm. I wondered if it was a meteor , but the trail looked too short and symmetrical for that. I made a "heat-map" of its intensit...
by rwilkinson
Sat Mar 09, 2019 8:28 pm
Forum: Physics, Space Science and Theories
Topic: Ultima Thule flyby - 1st January
Replies: 5
Views: 3155

Re: Ultima Thule flyby - 1st January

The New Horizons team have just published a pair of stereoscopic high-resolution images as a 3D pair:
http://pluto.jhuapl.edu/News-Center/New ... e=20190307
I found that I got the best effect from the "cross-eyed" pair.
by rwilkinson
Fri Mar 08, 2019 12:13 pm
Forum: Astronomical events
Topic: Comet 46P/Wirtanen
Replies: 9
Views: 6108

Re: Comet 46P/Wirtanen

This comet has declined from 3rd down to 11th magnitude in the last couple of months, but it's high in the sky in Ursa Major at the moment, so I could easily detect it with my faithful old Mx716 camera. 46p_7mar.jpg I also had a look for 123P/West-Hartley , which I'd expected to be fainter (12th or ...
by rwilkinson
Thu Feb 28, 2019 4:25 pm
Forum: Astronomical events
Topic: Comet 2018 Y1 (Iwamoto)
Replies: 7
Views: 4128

Re: Comet 2018 Y1 (Iwamoto)

I got some more data last night, this time using one of my Sony cameras on the StarWave 80mm refractor:
composite.jpg
Comet Iwamoto on 27-Feb, with M36 & M38. 56x 120-sec with Sony NEX5R on 80ED at f/5
composite.jpg (185.51 KiB) Viewed 3828 times
I could have done a better job of framing it, but I'm not used to this wide-field camera yet!