I have made some blocks, by waxing thin pieces of glass as i want to dice the glass pieces. After dicing i want to dewax the blocks and get rid of the wax...

If anyone was buying telescopes in the late 1970s, you will remember the wild price increases for some of the higher priced models. There were other reasons...

....was a (about, more or less) 50mm leather-wrapped brass collapsible (telescoping, right?) refractor that had been my grandfather's... My Dad showed me a...

Space Weather Message Code: ALTK08 Serial Number: 11 Issue Time: 2004 Nov 08 0117 UTC ALERT: Geomagnetic K-index of 8 Threshold Reached: 2004 Nov 08 0110...

Hi, I'd like to make an aperture mask for my SCT. Does the hole need to be round? I need to work around the center obstruction, and I'd like to have a larger...

A brief note to anyone interested: A few minutes ago, shortly after nightfall, a small, distinct, green, rayed auroral arc was visible just above my...

Our astronomy club is designing a mirror holder for a new 18" diameter Pyrex mirror for our existing Cassegranian telescope. As the casing holding the mirror...

Today (and last night), I feel like the biggest idiot standing on this planet (and you do know that the competition is pretty tough! :-)) I was lucky enough...

Space Weather News for Nov. 7, 2004 http://spaceweather.com Big sunspot 696 unleashed an X-class solar flare on Sunday, Nov. 7th, and probably hurled another...

It's about 7:20 pm, central time, 11-7. Got some good northern lights going, lots of red. A few streamers going right though Cygnus and Lyra, directly...

Hi gang! I've been quiet lately working on my various chores and duties but I wanted to SPAM the group with an announcement that my AstroNerds (read Astronomy...

I've posted some pictures from last night's auroral display: http://homepage.mac.com/joebergeron/various.htm -- Joe Bergeron http://www.joebergeron.com

I spent the eveing up at the 16 inch telescope at the Mt. Wilson Observatory, practicing for a USC session next Friday. Temperature in the dome was 44 degrees...

aurora now, I'm at 41 N and they are to the zenith. matt

Seems like I remember both Celestron and Meade claiming in the 1980s and 1990s that their mirrors on their SCTs were enhanced coated, providing at least 92-96%...

I had seen Sam Wormley's postings and was aware of the possibility of auroral activity on Sunday night (Nov. 7th) and Monday morning (Nov. 8th, 2004). My...

Space Weather Message Code: WARK07 Serial Number: 18 Issue Time: 2004 Nov 07 2304 UTC WARNING: Geomagnetic K-index of 7 or greater expected Valid From: 2004...

From Kansas City, Mo (39 deg N) Blue-green curtains seen 35 deg above horizon at around 3:15UT. Many blue-green curtains observed between 4 &5 UT, some...

Aurora Overhead - Central Iowa 6:30 PM CST (0:30 UTC)

FOR RELEASE: 12:01 am (EST) November 4, 2004 PHOTO NO.: STScI-PRC04-30 HUBBLE SPOTS RARE TRIPLE ECLIPSE ON JUPITER At first glance, Jupiter looks like it...