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PostPosted: Fri Sep 11, 2015 10:51 pm 
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Joined: Thu Sep 10, 2015 8:56 am
Posts: 12
This is just of historical interest, but on 19 November 1969 my late father Jack Ells made an observation of Apollo 12 just after it had left Earth orbit and was on its way to the Moon. Very basic details may be found on the (Oxford) Museum of the History of Science website here:

http://blogs.mhs.ox.ac.uk/fortheloveofit/jacks-story/

Peter


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PostPosted: Sat Sep 12, 2015 8:03 am 
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Joined: Mon Oct 21, 2013 8:35 am
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hi Peter

Thanks for the link to a very fascinating article. I was a teenager back then and quite frankly we thought that moon flights would just continue. Needless to say we hadn't grasped the cost which was apparently 4% of US tax revenue. Still, it is a shame there seems no concrete plans to return - Mars is the flavour of the month!

The article would suggest that your father's scope was interesting instrument in its own right - have you any surviving photos of it?

Again thanks


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PostPosted: Sat Sep 12, 2015 5:33 pm 
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Joined: Thu Sep 10, 2015 8:56 am
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Hi CGDTaylor,
In itself, my father’s telescope was an ordinary 32 cm diameter, 2.03 m focal length Newtonian reflector, although the observatory and mounting were most unusual, as you have probably seen in the link to the model:

http://www.mhs.ox.ac.uk/jack-ells-rocki ... servatory/

At the date of the of the Apollo 12 observation, the observatory was alt-azimuth in its configuration. My father wrote up the later conversion which placed an equatorial sub-frame under the observatory, and this may be found here:

http://articles.adsabs.harvard.edu/full ... ..89...66E

The first two pages of this article (see especially Figure 1) show the observatory in its original alt-azimuth configuration.
My father called me and my brother (then aged 17) out to confirm the three flashing lights mentioned in the Apollo 12 observation, and to discuss them.
I hope human beings do get back into space again,
Regards,
Peter


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PostPosted: Sat Sep 12, 2015 8:14 pm 
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Joined: Fri Dec 03, 2004 9:58 pm
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Location: Wellingborough
Dear Peter,

thanks for posting this. Most interesting!

regards,

_________________
Brian
52.3N 0.6W
Wellingborough UK.

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