Search found 1416 matches

by rwilkinson
Wed Apr 22, 2020 8:04 am
Forum: Physics, Space Science and Theories
Topic: Apollo 13 on BBC World Service
Replies: 5
Views: 4030

Re: Apollo 13 on BBC World Service

There have been two "bonus" episodes, featuring extended interviews with Commander Jim Lovell and Flight Controller John Aaron : https://www.bbc.co.uk/programmes/p0894pk1 https://www.bbc.co.uk/programmes/p089lxh8 John Aaron is the "EECOM" Controller who made the legendary "try SCE to AUX" call which...
by rwilkinson
Tue Apr 21, 2020 7:48 am
Forum: Astronomical events
Topic: The other Comet ATLAS (C/2019 Y1)
Replies: 1
Views: 3062

Re: The other Comet ATLAS (C/2019 Y1)

This comet has got brighter in the last few weeks, and will be getting higher in the sky too. It's now reached its peak 8th magnitude and is tracking rapidly from Cassiopeia through Camelopardalis . However I had some trouble finding it at first: there was sufficient inaccuracy in the orbital elemet...
by rwilkinson
Mon Apr 20, 2020 12:15 pm
Forum: Astrophotography
Topic: Imaging with an "old school" setup
Replies: 1
Views: 3838

Imaging with an "old school" setup

All the hardware which I use for my comet imaging dates back to the turn of the century... I bought the Celestron C8 Schmidt-Cassegrain Telescope and Meade 0.33 focal reducer brand-new back in 2003. Originally I used it on an EQ5 mount with dual-axis motors: and so had to spend quite a while "star-h...
by rwilkinson
Mon Apr 20, 2020 11:02 am
Forum: Astronomical events
Topic: Comet 2019 Y4 (ATLAS)
Replies: 6
Views: 5384

Re: Comet 2019 Y4 (ATLAS)

I got another image last night, which shows the comet even more elongated than last week:
c2019y4_19apr.jpg
C/2019 Y4 on 19-Apr. 71x 60-sec with Mx716 on C8 at f/3.5
c2019y4_19apr.jpg (86.37 KiB) Viewed 5029 times
by rwilkinson
Sat Apr 18, 2020 8:39 am
Forum: Astronomical events
Topic: Comet 2019 Y4 (ATLAS)
Replies: 6
Views: 5384

Re: Comet 2019 Y4 (ATLAS)

I've just been watching a very interesting "webinar" from the BAA Comet Section : https://www.youtube.com/watch?v=N2d_t_fDndo (this is a YouTube recording of a Zoom meeting which took place at the start of April - before the comet started to fragment) . It consists of a 25-minute presentation from C...
by rwilkinson
Fri Apr 17, 2020 2:08 pm
Forum: Physics, Space Science and Theories
Topic: Experience Apollo 13 in real-time
Replies: 2
Views: 1804

Re: Experience Apollo 13 in real-time

This afternoon we'll have the Service Module separation, after which Jim Lovell looks at it out of the window and reports: there's one whole side of that spacecraft missing! https://www.honeysucklecreek.net/images/images_Apollo_13/AS13-58-8464_cropped_adjusted_sm.jpg And then about 7pm this evening ...
by rwilkinson
Thu Apr 16, 2020 11:04 am
Forum: Astronomical events
Topic: Comet 2017 T2 (PanSTARRS)
Replies: 9
Views: 6987

Re: Comet 2017 T2 (PanSTARRS)

I've been following this comet for five months now and it's still around 8th magnitude and well-placed in our sky (in Camelopardalis):
c2017t2_15apr.jpg
C/2017 T2 on 15-Apr. 60x 60-sec with Mx716 on C8 at f/3.5
c2017t2_15apr.jpg (84.07 KiB) Viewed 4232 times
by rwilkinson
Wed Apr 15, 2020 10:33 am
Forum: Physics, Space Science and Theories
Topic: Experience Apollo 13 in real-time
Replies: 2
Views: 1804

Re: Experience Apollo 13 in real-time

At around 90hrs Ground Elapsed Time (which will be Wednesday afternoon our time) they begin talking through the construction of the makeshift adaptor to plug the CM's air-purifying canisters into the Lunar Module (this takes about 3.5 hours before they get it installed). https://spacecenter.org/wp-c...
by rwilkinson
Tue Apr 14, 2020 3:53 pm
Forum: Physics, Space Science and Theories
Topic: Experience Apollo 13 in real-time
Replies: 2
Views: 1804

Experience Apollo 13 in real-time

I've just discovered this site: https://apolloinrealtime.org/13/ which presents an amazingly detailed archive of the mission, including all the individual audio loops along with a wealth of pictures and graphics. The Oxygen tank explosion takes place at 55hrs 54mins Elapsed Time, but it takes them s...
by rwilkinson
Sun Apr 12, 2020 12:59 pm
Forum: Physics, Space Science and Theories
Topic: 30 years of the HST
Replies: 0
Views: 3952

30 years of the HST

It's amazing to think that the Hubble Space Telescope was launched thirty years ago this month. Originally designed for a 15-year mission (but almost written off after its initial problems with the mirror) it's still going after three decades (and four servicing trips from the Space Shuttle) . I've ...