Search found 48 matches

by nas76
Wed Dec 12, 2012 11:13 am
Forum: General chat
Topic: Sir Patrick Moore
Replies: 53
Views: 13858

Re: Sir Patrick Moore

I haven't seen it yet, but last night the BBC did a 30 minute tribute programme about Sir Patrick, it's available on BBC iPlayer until Tuesday 18th Dec in the UK. http://www.bbc.co.uk/iplayer/episode/b01psbjf/Sir_Patrick_Moore_Astronomer_Broadcaster_and_Eccentric/ The synopsis reads: A look back at ...
by nas76
Tue Dec 11, 2012 10:18 am
Forum: General chat
Topic: Sir Patrick Moore
Replies: 53
Views: 13858

Re: Sir Patrick Moore

....However the appearances of 'celebs' likes of Brian May and .... I agree with you with some of the others but Dr Brian May, who colaborated in recent years with Sir Patrick, whose PhD is in astrophysics. Yes he was part of one of the most successful bands of the 70s and 80s but that's not the re...
by nas76
Mon Dec 10, 2012 8:02 am
Forum: General chat
Topic: Sir Patrick Moore
Replies: 53
Views: 13858

Re: Sir Patrick Moore

I came on here for the first time in quite a while to post about the passing of Sir Patrick and then I have to read the vitriol in this thread. Whether you liked him or not, now is not the time to spout off in that manner. Any visitors to this site and any budding astronomers would read and be put o...
by nas76
Fri Aug 26, 2011 8:15 am
Forum: General chat
Topic: stellarium
Replies: 14
Views: 3556

Around the time of Jesus Polaris was at about 80deg, luckily for the mariners who first traversed the Atlantic it has been close enough to the true pole to use as a simple navigational aid. Polaris will get closest to true north in the year 2104, when it will be about half a degree away.
by nas76
Fri Aug 26, 2011 8:09 am
Forum: General chat
Topic: Betelgeuse's nebula ..
Replies: 11
Views: 1781

The only worrying thing is that when it does explode, anywhere between today and the next couple of million years, the amount of cosmic radiation that will head our way could be quite devastating is considering its relative closeness to us. Whether it be a threat to the biology of Earth is one thing...
by nas76
Fri Aug 26, 2011 7:39 am
Forum: Light pollution
Topic: Legislation regarding street lighting
Replies: 1
Views: 3789

Legislation regarding street lighting

I was wondering whether anyone would be able to point me in the direction of any legislation that covers street lighting that spills onto private property? I am in dialogue with my local councillor who is rather helpful but unfortunately he has been stone-walled by Hertfordshire County Council, who ...
by nas76
Tue Jun 07, 2011 9:23 am
Forum: Telescopes and instruments
Topic: New telescope help
Replies: 9
Views: 2131

Thanks Eddie, As I said in my first post, imaging isn't high on my priorities at the moment, primarily due to additional cost of the equipment required. The 3" Newtonian I have now would be useless for the job hence my desire to get a larger telescope now. Once I can see deep sky objects and learned...
by nas76
Tue Jun 07, 2011 7:19 am
Forum: Telescopes and instruments
Topic: New telescope help
Replies: 9
Views: 2131

Thanks everyone for your help. I fully understand that in the case of Dobs one can have a larger mirror than a Newtonian for the same cost but the mount is quite off putting; and as I suspected, not suitable for imaging unless motorised. I did see the scope that Colin is selling, and whilst it looks...
by nas76
Mon Jun 06, 2011 3:43 pm
Forum: Telescopes and instruments
Topic: New telescope help
Replies: 9
Views: 2131

I forgot to mention that some of these scopes come with a red dot finder rather than a finderscope. My current kit has a finderscope, which I'm used to, but would I be right in guessing that a red dot finder is simply a laser? If so is it any good on a perfectly clear sky?
by nas76
Mon Jun 06, 2011 9:25 am
Forum: Telescopes and instruments
Topic: New telescope help
Replies: 9
Views: 2131

New telescope help

It's been a while since my last post, so here's an extra long one... It's about time I had a new scope, the 3" reflector that I've been using up until now has served it's purpose and now I want to got to the next level of viewing. The 3" scope was excellent for a beginner and gave stunning views of ...
by nas76
Thu Jan 28, 2010 11:12 am
Forum: Astrophysics
Topic: Travelling at speed of light
Replies: 5
Views: 3060

It's calculated by using the Lorrentz transformation: T(Earth) = T(Rocket) / [sqr root(1 - [V(Rocket)/V(Light)]^2)] However if V(Rocket) was impossibly going at the speed of light, the equation would return infinity. So if the rocket travelled at 99% of c, then T(Earth) would be about 7 times that o...
by nas76
Fri Jan 15, 2010 9:43 am
Forum: Astrophysics
Topic: Solar eclipses
Replies: 0
Views: 1521

Solar eclipses

Today there was an annular eclipse, for quite a while now I would like to learn more about how eclipses are calculated. I know that the Saros series allows when they are calculated within a cycle with a period of 18.3 years and that after each of those cycles the path of the moon's shadow slowly mov...
by nas76
Tue Jan 05, 2010 10:11 am
Forum: Space exploration
Topic: Nasa's Kepler planet-hunter detects five worlds
Replies: 1
Views: 1557

Nasa's Kepler planet-hunter detects five worlds

From http://news.bbc.co.uk/1/hi/sci/tech/8440392.stm Nasa's Kepler Space Telescope has detected its first five exoplanets, or planets beyond our Solar System. The observatory, which was launched last year to find other Earths, made the discoveries in its first few weeks of science operations. Althou...
by nas76
Tue Jan 05, 2010 9:30 am
Forum: General chat
Topic: The Case For Pluto
Replies: 10
Views: 1714

From what I think I read somewhere I gather most of the delegates had gone home when the IAU got round to considering Pluto (?) Yes that is true according to the book, also at the time some members tried to cobble together a sub-clause and the whole thing got over complicated. For what it's worth, ...
by nas76
Mon Jan 04, 2010 9:47 am
Forum: General chat
Topic: The Case For Pluto
Replies: 10
Views: 1714

The Case For Pluto

I received this book (title in subject line) at Christmas and I can very much recommend this quite enjoyable read. The author, Alan Boyle, mentions in the forward that like a number of astonomers he too agreed that Pluto should be relegated without giving it much thought. It was after sitting down a...