Hi guys, Here's an abstract of a paper that was recently released : We present the Skysoft project (http://www.skysoft.org). Skysoft is a YAASD (Yet Another...
Rupes Recta a.k.a. "The Straight Wall" is one of the more popular lunar features. It appears as a prominent dark line when the moon is about 8 days old. It...
... Tom surely at third quarter its sunset lighting!! Tony Beresford...
Tony Beresford
dberesford@...
Dec 4, 2003 1:01 am
11466
... Though I'm not a regular Moon-viewer, what I registered, because I _have_ looked the Moon(!), was "three-quarters illuminated", i.e. gibbous phase "about...
Brian Skiff
brian.skiff@...
Dec 4, 2003 1:45 am
11467
... No, actually I meant just past Third Quarter, when the _sunset_ lighting on Rupes Recta is the most prominent, and it is presented as a bright, linear ...
... I an not certain this 7 degree figure is accurate. The Lunar Orbiter image IV-113-H1 has a sun angle of 69.9 degrees from normal incidence at the center ...
David Knisely
KA0CZC@...
Dec 4, 2003 6:35 am
11469
I found this interesting. I'm only a casual lunar observer but looked at the Straight Wall last "about 580 feet (300 m) in depth and 1.5 miles (2.5 km) in...
... The problem is that the surface profile of the feature is not merely a simple slant. The slope obviously changes dramatically as you go up towards the ...
David Knisely
KA0CZC@...
Dec 4, 2003 7:36 pm
11471
Sounds as though somebody's been doing rough estimates and getting figures from rather shallow to pretty steep. Given that we've got the Moon mapped at 1-m...
Brian Skiff
brian.skiff@...
Dec 4, 2003 8:02 pm
11472
... I passed my query on to Chuck Wood, who has written a lunar-observing column in S&T for quite some time. He gave the following reply about the slope of...
I'm doing research for article on M101 and its companions. In one article I found a galaxy that is thought to be a member listed with the classification of...
Alan Goldstein
deepskyspy@...
Dec 5, 2003 1:32 am
11474
I believe in stands for "Blue Compact Dwarf" ... ___________________________ _______| |_______ \ | John N. Gretchen III |...
UK amateur Chris Heapy has uploaded this cool (1.5Mb)animation that some of you guys might like to see. http://easyweb.easynet.co.uk/~chrish/t7c.gif -- ...
This far-southern comet has apparently disrupted, as described in this item from an IAU Circular issued today: COMET C/2002 O7 (LINEAR) M. Mattiazzo, Wallaroo,...
Brian Skiff
brian.skiff@...
Dec 5, 2003 3:47 am
11477
Hi Brian, ... I thought this was an odd declaration of theirs: it was pretty well known among comet circles that this comet had disrupted at the end of ...
Well, at least in the world according to Dan Green, there were simply no observations (or non-observations) other than Mattiazzo's. \Brian...
Brian Skiff
brian.skiff@...
Dec 5, 2003 4:34 am
11479
John, My eye keeps being drawn to the "star" that makes a brief appearance bottom center. Clear skies, Sue ... From: "John N. Gretchen III" <jng3@...> ...
How many Pulsars, of at least 558 such objects catalogued, have an optical counterpart? Only a very small handful, I would surmise. While thumbing through old...
Mati Morel
morel@...
Dec 7, 2003 2:11 am
11482
If the USNO-B1.0 catalogue is to be believed, the pulsar (or at least the visible white-dwarc counterpart) has fairly large proper motion of about 0".15 per...
Brian Skiff
brian.skiff@...
Dec 7, 2003 3:05 am
11483
... From: "Brian Skiff" <brian.skiff@...> To: <amastro@yahoogroups.com> Sent: Sunday, December 07, 2003 2:04 PM Subject: Re: [amastro] Optical...
Mati Morel
morel@...
Dec 7, 2003 7:48 am
11484
It just occurred to me to look in the place we both should have looked _first_ for the galaxy: NED. The galaxy is indeed there, and is assigned a blue...
Brian Skiff
brian.skiff@...
Dec 7, 2003 8:00 am
11485
I am working on an article on M101. I am interested finding out what the smallest aperature the spiral structure and various nebulae can be seen. Sky...
Alan Goldstein
deepskyspy@...
Dec 8, 2003 12:53 am
11486
Alan; I have a set of observations to send and here they are. I am just going to give you a set that includes the NGC numbers nearest to M101 on either side ...
... smallest aperture the spiral structure >and various nebulae can be seen. Sky transparency & seeing info is also welcome. I'm also interested in ... within...
I neglected to mention also that in additional to seeing three spiral arms and one HII region in the 7.1" I could make out several darker areas within the...
Alan, Here's a scan of a page in my log book from 1 June, 1984: http://www.ladyandtramp.com/images/m-101_6-inch.jpg The drawings and notes certainly suggest...
RE: Detail in M101. I can see some hints of mottling in a 6 inch, and one or two of the larger star clouds in an 8 inch, although the spiral structure is not...
David Knisely
KA0CZC@...
Dec 8, 2003 5:31 am
11491
Is the small nebula surrounding the emission line star Kohoutek-Wehmeyer 23-5 (SIMBAD designation [KW97] 23-5) really an anonymous bright nebula? While...
Hi Steve and the others! ... Did you try the UHC filter? I remember my observation of the great spiral M33 and its H II regions. I tried my [OIII] filter with...
