Compared to consumer digital cameras, astro CCD cams are still WAY behind when it comes to the number of pixels. The latest one is the Meade DSI Pro, an...

Hi, some questions. It is said that larger focal ratio scope has bigger airy disc. For example. An 8" SCT f/10 has bigger airy disc than a 4" f/5 apo....

The Outer Milky Way's Exotic Origin By Ken Croswell, author of The Alchemy of the Heavens ***EXCLUSIVE*** A collision between another galaxy and our own 5...

Is the following formula correct? Is it precise? To find the "local time" of a place (as opposed to its time according to Time Zone standards)add 4 minutes of...

Anyone know of a dealer in CONUS that carries the Synta HEQ5 mount?

The mosaic in the link below was created from 52 images using the Meade LPI and my 10" LX200GPS. Each of the 52 images is made up of 30 individual stacked...

http://www.cnn.com/2005/TECH/science/04/08/earth.science/index.html Great article on the current situation in climate science. Climate science and how it is...

Hi, I have a Denkmeier dieelectric coated binoviewer which I haven't used for months. When I tried to use it yesterday with 2 identical 15mm TV Plossl. I...

Good morning CAT fanciers. Looks like this is going to be the biggest year yet, especially due to the grand prize we'll be offering, thanks to the generosity...

HI Gang: How dumb can your old Uncle Rod be? Don't answer that! Dumb enough to have left off the name of one of our most important sponsors from the article...

I recently purchased an Orion XT8 Dobsonian. I have two eye pieces, 25mm which gives me 48x mag. and 10mm which gives me 120x mag. My question is what would...

There's something I think I have wrong concerning CCDs and I wanted to find out the correct answers. Say I have a webcam, which has an ICX098 CCD and another...

HI Gang: How dumb can your old Uncle Rod be? Don't answer that! Dumb enough to have left off the name of one of our most important sponsors from the article...

What is considered a close spacing between stars? (and I don't mean in arcseconds from our perspective). I'm looking at an astrophoto of M7 and the background...

Did anyone see the sun today? It was unbelievable. There must have been six huge prominences hanging off the bottom, looking like a scraggly beard. Two of the...

(Solvang, California) Jedi Business dot com, a small southern California based business, is going live today. Providing a service like no other, a secure place...

For the past two days I've observed Saturn about two hours before sunset. I was struck by how much wider and diffuse the Cassini division appears under these...

Rosamond Report "Close call" The Sky was clear, the wind down and the weatherman saying it could rain this weekend. So I took the scope up to...

Greeting all.... Does anyone have opinions on a Celestron 9.25"? The reviews I've read are always good---but then, I've never seen a bad review. I've even...

Hi, If there is no such a thing as apsolute time, does age of universe makes sense? Is universe 13.7 Gy old just from our point of view or it's true...