Nice to see Michael Foale send a message. Wonder if he'll be on that first ship to the Moon? Boy, will he be British then :o) -- Gareth Slee Just a...

For those following along in my other thread, today I tested the 12" SCT for SA. I get a pattern just like figure 2...

This picture shows tracks made by dust devils. Was it these tracks that were mistaken for canals by Lowell? Could he have resolved large ones with his Clarke...

Polaris is obstructed by a tree. Chainsaws are to noisy for 3AM work. What's the best way to kill a tree?

Sky and Tel has discussed this quite a bit lately, and I managed to snap a pic of the 24 hour, 28 minute old Moon tonight just before it slipped below the...

Sam Wormley wrote: I don't think this answers the question. This is just 2 equations to describe how a wavelength shift can be related to two different...

-----BEGIN PGP SIGNED MESSAGE----- WHILE THE WORLDLY "scientists" will argue all day long for and against the reality of short-term and long-term global...

From cnn.com: TUCSON, Arizona (AP) -- A tribe opposed to the construction of a complex of seven telescopes at a mountain peak that the tribe considers sacred...

When I heard the news that a new, distant asteroid had been discovered, one on the borderline of being recognized a planet, and that it had been named after...

I got into a little argument today with an expert on telescopes and just about everything to do with them (not a self-styled expert, either, but a recognized...

How could I go about building a telescope such that it would be able to clearly view the US landing sites on the moon?

All the bravado around sending humans to Mars as soon as possible brings to mind the safe position inherent in the line, "Let's you and him fight." It's time...

I'm wondering if it would be possible to use the smallest possible pixel size and make a CCD smaller to keep cost down? If the targets a person goes after...

Hello Group, After reading through the archives and other sources about the relationship between aperture, optical quality, scope design and vulnerability to...

NASA Admits Two Large Comets Will Become Visible In Less Than 10 Weeks By David Booth 2-17-4 In a world looking for answers about the...

Would a 5" apo make a good, all-purpose scope for lunar/planetary/doubles/clusters (i.e., no faint fuzzies)? (Please, no flames, no trolls.) It seems that...

This picture seems to indicate an amazing feat. If you look at where the rover first hit the surface, you can actually see the tracks made right into the...

http://www.gps.caltech.edu/~mbrown/sedna/ What is the definition of a planet? It is difficult for scientists to have to define a word that everybody thought...

Here I go again, I was debating in another thread between a Konus 8" newt and a Meade SN-8. In light of the responses I decided against the SN-8. But here's...

I cleaned my 8" dob mirror for the first time in 7 years as per the instructions in the Celestron manual. I used a camel hair brush working from the center...