... Hi Neal, As far as I know, shadows of non-Galilean moons have not been observed from Earth. They are too small. Regarding Saturn, certainly the shadow of...
mclark@...
Apr 1, 2004 1:08 pm
12222
Solar max is a four-letter word for deep-sky observers in Edmonton (N53 W113). At max, there is about a 90% chance that there will be an aurora covering almost...
Alister
aling@...
Apr 1, 2004 3:20 pm
12223
On another Yahoo discussion group an observer with an Alvin Clark & Sons 25cm f/22 refractor says that when the atmosphere is steady he can see eruption plumes...
Hi Sue, Pal 8 has an RA of 18 41 29.9 according to "Star Clusters". Mackie 1's RA is 18 41 52 according to "Star Clusters". So yesterday when I read your...
Alan, Uncle, uncle! I knew it wasn't due south. In fact, I've observed the object at those coordinates with a couple scopes. It's just that when I read...
I've been seeing plumes on all of the moons for the last few years. Glad someone has now verified it, and it's not my eyesight. WHEW! Neal ... [Non-text...
Going back to Dana's find of last October now. Remember? Here's what Brian had to say about it... ... Now, I've been looking at this one again, and it looks...
... The IRAS position is 19 47 00.3 +29 30 13, which is 33" away, but note that the position error-ellipse has half-widths of 34x10" in pa69. Thus the nebula...
Brian Skiff
brian.skiff@...
Apr 2, 2004 2:12 am
12230
The Tycho-2 catalogue contains a number of "stars" that are actually the nuclei of galaxies. Does the two color photometry reflect a realistic magnitude of...
The Tycho instrument on the spacecraft used an array of slits to define the locations of the stars/objects. Thus they aren't really like photometric...
Brian Skiff
brian.skiff@...
Apr 2, 2004 3:28 am
12232
... though ... I think that if you stop to consider that the original discovery images had to be both enhanced and enormously enlarged to show the plumes...
I have to report that the person that posted this observation has fessed up to it being an April Fools joke. I should have known… 8-\, Mike Casey ... WHEW!...
Another ApJ Letter, this time from a Venezuela/Harvard group, reports additional data on the star and nebula, including a complete time-series of images from...
Brian Skiff
brian.skiff@...
Apr 3, 2004 12:31 am
12235
What follows is a listing of planetary nebulae present in the NGC and IC that, according to my lists, do not have common names (like NGC6853 = Dumbbell Nebula,...
Christopher Watson wrote; ...If anyone knows of a common name attributed to any of the following, I'd appreciate hearing about it... Several times I've seen...
Some observers, such as Smyth, occasionally used the Latin words: "comes" - companion "comites" - companions I have my suspicions, but does anyone know under...
Hi all, On the night of Mar 30 (0:28 UT) while shooting some hi res lunar pics with my 18" dob and Toucam I shot a video of the Straight Range near Plato which...
My 1964 edition of _Norton's Star Atlas_ says that the terms comes and comites are used when the companion is much fainter than the primary. Comites is simply...
Thank you. I just checked that in my Nortons (1966 and 1959). I understood that could be one interpretation. I was puzzled, however, by the fact that Smyth...
Just a guess as to why the Latinate forms: Struve's "Mensurae Micrometricae" is written in Latin and he used those terms. "Comites" looks like a diminuative...
Brian Skiff
brian.skiff@...
Apr 3, 2004 7:47 pm
12242
Sue, ... When I have seen that expression, I have taken it to mean that there are other fainter companions besides the main components of the double star....
Questions for those of you knowledgeable about redshifts: I've run across a discrepancy in the databases and it appears the only way to resolve the problem is...
Anything with radial velocity higher than 500-600 km/sec can't be bound to the Galaxy, so if 8872 is correct, then this is a moderately distant galaxy,...
Brian Skiff
brian.skiff@...
Apr 4, 2004 5:59 pm
12246
Looks as though both my responses were in error! \Brian...
Brian Skiff
brian.skiff@...
Apr 4, 2004 6:18 pm
12247
Reply to : Sue French ... ablative singular? << Singular - referring to one only Ablative - the instrument of action - e.g. he killed the lion with a sword. He...
Dave, with a red shift of almost 9 million km per second. I would expect this object to be pretty far out. However if we say the red shift in the catalog...
... Only 9 thousand, but whatever. I pulled out the relevant POSS-II films (blue, red, far-red) to have a look at this thing. Dave R is right to have been...
