Two major X-class flares have gone off today, one is still ongoing, may have strong earth-bound CME's...

I ask because Kodak has just introduced an interesting product, a deep red LED safelight designed for use with dental X-ray...

I would like to see Hermes when it comes close enough. Where can I find ephemerises, so I can copy them in SkyMap or wherever...? Ante -- Astronomska sekcija...

Looking over this page http://www.seds.org/messier/xtra/marathon/hall.html it looks like the most northern latitude was Virgina. Anyone complete it at 41...

I may be moving to the Arlington area in a few weeks. Can someone give me some info on astronomy clubs in that area?

Hello gang, Has anyone compiled any data on where eyepieces come to focus relative to each other? I have three scope which I enjoy, two of which are tough...

Went out at 5am this morning to clear, dark, steady skies (not a street light to be seen for 5 miles - I'm in truly rural Wales, UK) and spent an hour getting...

In article , Sam Wormley wrote: CC wrote: Yes, there a general defect in physics itself as it...

I was thinking about purchasing the 9mm GTO long eye relief eyepiece and was wondering if anyone has purchased or reviewed it. ...

After centering the secondary using a site tube, I aligned it using a laser and a center dot on the primary. I then collimated the primary by getting the...

A short while after posting my suggestion to use a RAMdisk to speed up image processing with tools such as Registax, the RAMdisk utility I was using at the...

I will be making a 12.5", f/6-7 Newtonian starting soon. Until now, all I have made (for myself) have been 10" or less, and aluminum tubing is easily available...

Hi All, I find it quite interesting to compare concurrent white-light and Hydrogen-alpha events of the sun's surface, and blink sequences usually...

DS102203 RECENT OBSERVATIONS by David Knisely DATE: October 22nd, 2003, 0730 to 0930 hrs UTC. LOCATION: Beatrice, Nebr. 40.284N, 96.735W,...

Several people have been talking about digital SLRs (Canon, etc.) here lately, and I wanted to point out an advantage of conventional (non-SLR) digital...

I just did a search on Yahoo groups for aurora. 400+ hits! Anyones that relate to atmospheric aurora observing?

Just a short note of appreciation - the first Eldorado Star Party (Oct. 22-25, 2003) was Excellent. A huge thanks to the X-Bar Ranch of Sonora, TX, and...

Dear Friends, The sun keeps getting better and better! A couple of links for your viewing...

I had the opportunity to briefly try out a Gen3 night-vision monocular (1x) thursday night (Oct. 23). It's amazing how well these things work. Of course, I...

Hello, I have volunteered to do the Newsletter for a newly formed local astronomy club (started in April 2003). I will be using MS Word Newletter templet. I...