True north will make its closest approach to Polaris at the end of the 21c. Does anyone know the exact year? And will it later head back towards Thuban in...

Hello, I've been lurking for a bit now, nice to see such a variety of people here! I had a small question. My Dad gave me his Celestron C8 that he...

In article , (John Curtis) writes: My reference claims that the largest...

Can anyone comment on the accuracy of Orion Telescopes clock drived for their EQ series (1 or 2, in particular) tripods? The drives I am refering to, are...

http://neo.jpl.nasa.gov Asteroid 2003 QQ47's Potential Earth Impact in 2014 Ruled Out Paul W. Chodas and Steven R. Chesley NASA's Near Earth Object Program...

A proposal for a new area of study... Astrohumanics Astrohumanics : the branches of learning regarded as having primarily a cultural character,...

Hi folks, My trusty 8" Meade LX200 schmidt Cassegrain telescope is now up for sale, as I haven't got the space or the time to devote to it now. It might be of...

Thanks to all who helped me with my last 2 questions. I have another question but I don't know if it can be explained without a model or diagram. If I live...

Is it possible, or ever been postulated and discounted, that what is driving the acceleration of our universe's outward spread, is not energy contained within,...

Well I read that eye glasses were invented in China. We are told that a Dutch lens-grinder (Hans ????) can't think of his last name invented the telescope in...

http://science.nasa.gov/headlines/y2003/08sep_goaway.htm The Planet that Won't Go Away NASA Science News September 8, 2003 Mars' closest approach to Earth...

Telescoop Dobson mirror 13. 8' (35 cm) Full autom. with pc. incl laptop + filter + 3 oculairs (25-10&6mm) and tools. Long:1800 mm. Nieuwprice mt drive: 4000...

RA 285.86885417 DEC -76.11558555 RA: 19h 04m 01.397s Dec: -76°06'25.062" RA: 19h 03m 29.115s Dec: -76°06'55.782" (Epoch 2000) Azm: 182°07'26" Alt:...

My 4" refractor is used with an equitorial mount. It took awhile to find mounting rings that were the right size. The rings are lined with felt and fit the...

I'm reading an introductory book on astronomy called _Discovering Astronomy_ by William H. Jeffrys and R. Robert Robbins. On page 7 is a description of the...

I've got a great new astronomy hobby! It's figuring out how my equitorial telescope mount works. I thought I had it all figured out then I discovered that...

rant Yeah i do! For years i've been reading and watching movies and TV shows that are sooooo HOPEFUL about finding ETI life. Maybe it's a *good* thing that...

I purchased a telescope and with it came the software program "The Sky"-Level One. What basically is this? Is it worthwhile and how will it help me?...

It should be easy to calculate where to set the right ascension ring (setting circle) on an equitoral telescope mount based on the time of day and...

How much credence do you give Richard Hogland? I think he and his theories are totally off base, and he is letting his imagination find things that just...