Friends, I was surprised to see the Astronomy Picture of Today, June 1st, named "Spirit Encounters Soft Ground on Mars". The rover left front wheel seems to be...
I've been looking at the "source" of the DoDz clusters, and have seen it listed as: Astr. Tsirk. 385, 7-8 Astr. Tsirk. 382, 7-8 Astr. Tsirk. 282, 7-8 Anyone...
... We have these in the Lowell library archive, so it was easy to look them up. It's not no 282, and no 382 has DoDz 1 through 11 (indeed page 7, date of the...
Brian Skiff
bas@...
Jun 4, 2009 12:10 am
22190
Halo All, I would like to share with you the southern planetary delight in the constellation Norma. It is very but very cold in SA at the moment. Take care, ...
Hi Magda, Thanks for your detailed observations of PNe in Norma. Clear skies! Kent Wallace ... From: Magda Streicher To: amastro@yahoogroups.com ;...
Kent Wallace
kwwallace@...
Jun 10, 2009 3:37 pm
22192
http://www.bareket-astro.com/movies/m3_variable_stars.html This is some kind of time lapse movie of M13 designed to catch the change in luminosity of the...
Greg, Those I know of vary by a magnitude or less. I wouldn't expect anyone to notice that amid all those faint stars unless deliberately monitoring them. ...
I note I mistakenly wrote M13 instead of M3. I did see that some of the stars appeared to wink out completely, so I guess a visual observer who wanted to try...
The short-period variables will all be RR Lyraes, so the amplitudes are at most a full magnitude or so. Unless you can also identify a good comparison star,...
Brian Skiff
bas@...
Jun 11, 2009 6:44 pm
22197
While working on some star lists, I noticed that a star now considered to be a symbiotic binary was originally catalogued as a planetary nebula. This is a...
Brian Skiff
bas@...
Jun 11, 2009 7:31 pm
22198
Hello group. Investigating the bordering zone between CrA and Sgr, a complex and interesting area, where are NGC 6726-27, etc. Encounter the nebula of the...
Hi, Dark nebulae are not really my thing, but I used the link provided by Rodolfo to retrieve the paper by Bernes. The positions in the Bernes catalogue are...
More on Bernes 157 and friends. I see that the position quoted by Rodolfo (19 02 54 -37 08, J2000) refers to the centre of the dark nebula in which R, S and T...
Hi Rodolfo & Mati, given the relative offsets of Be 157 to Be 158 - 160 and using the identifications Be 158 = HH 100, Be 159 = NGC 6729 and Be 160 = NGC...
Brian, Many thanks for the links to the symbiotic star catalogue. I'll have to check it against my PN list. Clear skies! Kent ... From: Brian Skiff To:...
Kent Wallace
kwwallace@...
Jun 12, 2009 3:34 pm
22203
During several public outreach events I have had attendees tell me they can see Mizar's companion(not Alcor), Mizar-(B?) HP 65378C Mag. 3.85, naked-eye. Not...
Mati Morel wrote: A good ... ******************* This is the best photo of the area that I have ever seen. http://antwrp.gsfc.nasa.gov/apod/ap090605.html This...
The separation is only 14", so this is well below the naked-eye limit. Astigmatism? A common thing I have run into is folks not realizing the difference in...
Brian Skiff
bas@...
Jun 12, 2009 6:35 pm
22206
I've only ever had one person, a 73-year-old man who wore thick glasses, stick to his claim he could see Mizar-B after having genuinely seen it subsequently in...
Thanks Mati, Matthias and Paul. Yes, the position 2000.0, (19 2 54_-37 8), is in center of the dark nebula. Bernes 158 is (HH 100); Be 159 (NGC 6729) and Be...
I am working on an upcoming club presentation on interesting Deep-Sky objects. This month I choose NGC 6522 because it is viewed through Baade's Window. (any...
icgalaxies@...
Jun 12, 2009 8:56 pm
22209
... two syllables: bah-deh ... If it lay in a patch with 2.79 mags of extinction, then it would indeed appear 2.79 mags fainter. I note that the Harris...
Brian Skiff
bas@...
Jun 12, 2009 9:37 pm
22210
Isn't M-24 also in such a window? Aren't we just seeing M-24 beyond a big hole in the dust? Or, do I have it wrong? \Paul A...
In a message dated 6/12/2009 2:38:08 PM Pacific Daylight Time, ... Ok...I think I interpreted Stanek backwards i.e that the extinction stated was a deviation...
icgalaxies@...
Jun 12, 2009 10:39 pm
22212
Rodolfo The confusion with the Bernes nomenclature... There isn't a dark nebula known as Bernes 157. Properly, the name applies only to the small reflection...
... Yes, the usual thing is to express the extinction on an absolute scale in magnitudes compared to zero extinction. ... ...
Brian Skiff
bas@...
Jun 12, 2009 10:50 pm
22214
Moffat & Vogt did a photometric study of the M24 starcloud (IC 4715) and decided it was something like a roof-shingle patch in the spiral arms of the Galaxy....
Brian Skiff
bas@...
Jun 12, 2009 10:50 pm
22215
In a message dated 6/12/2009 3:28:33 PM Pacific Daylight Time, ... The "windows" I have found reference to are: (dimensions are in arcminutes) W359.4-3.1...
icgalaxies@...
Jun 12, 2009 10:54 pm
22216
In a message dated 6/12/2009 3:51:00 PM Pacific Daylight Time, ... Quit that! You make this to easy :o) [Non-text portions of this message have been removed]...
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