Hi; I recently picked up one of the new GSO 42mm 2" and tried it in what is expected to be my travel scope. I'm using a C5 with a standard meade 2"...

On a lunar ephemeris there is a value often given: Position Angle (PA). I've noticed that it can vary from about -22.4 to + 22.4 degrees. In plain English,...

I am looking for a magnitude map for the Coma Berenices cluster for v8-14. Anyone know of any previously published maps for this cluster? - Thanks - Kurt

I am having a problem following how to convert MPAS into nits ( candelas per sq. meter ). Would someone please walk me through the math for let's say an MPAS...

Anyone know where I can order the Vixen 2004 printed catalog? I checked the Japan and North America websites but they don't appear to have an order form. I did...

Quick question he what type of scope is the ETX-125? An SCT or Mak? My mind is telling me Mak because I thought I read it somewhere, but not...

I had my new 6" f/8 dobsonian out last night (well it is new for me) and stomped the heck out of a 3" televue refractor on the moon, (Although stars looked...

Back in the old days (last year) when Mars was streaking past the earth, wreaking havoc on the tides, confusing birds as to whether it was day or night,...

Not the best choice, IMHO, for planetary use. And it doesn't compare too well in easiness of use. Don't forget that it has much larger pixels Hi: And this...

The proponents of creation "science" insist that creationism be given equal time with evolution. Consider the power of this request. In effect, they are...

Hi friends, I've done my first moon pictures with my 152mm f/8 Fraunhofer refractor with the amazing Chromacorr II and caught some very fine details on e.g....

Now begins the photographic chronicle of the construction of a small astronomical observatory at my home in Gambrills, Maryland (39° 04' 38"N 076° 39' 33"W)....

OK you photo types....... An acquaintance of mine asked me about the possibility of using an old 35mm camera body on a scope and taking infrared astrophotos...

I MUST weigh in! I started last summer like so many others... My views of Mars was intriguing but not impressive --- 8" reflector---but I was WAY out of...

I recently found an abused Meade 395 telescope at a local high school tag sale and it has an objective with a couple of very large chips in it. After cleaning...

Optical performance has always been limited by the glasses employed. Those who claim to have a secret configuration that uses ordinary glass, but eliminates...

-----BEGIN PGP SIGNED MESSAGE----- Sadly, the answer is Yes. Modern astronomers are ignorant, and they prefer to stay that way. Only in death will...

this week's astrological predictions will not be published.

Heya, I have a roll of 100 speed film that I exposed at the Grand Canyon under partial moon light (http://tycho.usno.navy.mil/gif/moons/m278.gif) and clear...

Space Weather Message Code: WARK05 Serial Number: 421 Issue Time: 2004 Apr 05 1907 UTC WARNING: Geomagnetic K-index of 5 expected Valid From: 2004 Apr 05 1910...