Search found 15 matches

by LirrelJohn
Sun Aug 20, 2017 4:14 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Time-Lapse: A Total Solar Eclipse (2017 Aug 20)
Replies: 16
Views: 7296

Re: APOD: Time-Lapse: A Total Solar Eclipse (2017 Aug 20)

"Install Flash"?

Are you kidding? Even Adobe has denounced Flash as dead software.
by LirrelJohn
Sat Aug 19, 2017 3:22 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Total Solar Eclipse of 1979 (2017 Aug 19)
Replies: 8
Views: 3931

Re: APOD: Total Solar Eclipse of 1979 (2017 Aug 19)

Three totals for the USA in 7 years; pretty cool! :wink: 8-) Three :?: "Moonfall", Jack McDevitt. There won't be a 2052 eclipse due to lack of sufficient Moon. There might be lots of transits of Sol by bits. It's quite strange how we keep catching up with the "future" as describ...
by LirrelJohn
Fri May 12, 2017 9:18 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: M13: The Great Globular Cluster in... (2017 May 12)
Replies: 34
Views: 7136

Re: APOD: M13: The Great Globular Cluster in... (2017 May 12)

Wonder how it would be to sit inside that cluster? The sky would be crowded with suns of different sizes. Is it hot? By the way, could there be any planets to land on, or do I have to stay on board my vessel? The whole globular cluster has to rotate in some way to prevent the stars from collapsing ...
by LirrelJohn
Fri May 12, 2017 9:08 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: M13: The Great Globular Cluster in... (2017 May 12)
Replies: 34
Views: 7136

Re: APOD: M13: The Great Globular Cluster in... (2017 May 12)

The burning question, so to speak, is as to why these clusters aren't/haven't formed into rotating disks ? From what I (poorly) understand, Globular Clusters, Elliptical Galaxies and the yellowed-reddish cores of spiral galaxies don't really rotate like a spinning football (a spherical one, not one...
by LirrelJohn
Sat Apr 01, 2017 4:34 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Split the Universe (2017 Apr 01)
Replies: 129
Views: 31742

Re: APOD: Split the Universe (2017 Apr 01)

Good on yah mates! For, even knowing the date, one sucked in. However, whether real or virtual the button-press interaction does in actuallity change/split the universe. There are three future-verses from the point where someone has come upon this APOD: 1) No press of the button; 2) Button press &a...
by LirrelJohn
Sat Apr 01, 2017 4:19 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Split the Universe (2017 Apr 01)
Replies: 129
Views: 31742

Re: APOD: Split the Universe (2017 Apr 01)

geckzilla wrote:My cat lived.
Lots of my cats lived. That's cool as I like cats.

"... the Physicists, when they finally opened the box, found that they cat had gone and left in its place a very confused dog."
by LirrelJohn
Tue Mar 28, 2017 3:32 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Ganymede's Shadow (2017 Mar 25)
Replies: 25
Views: 6109

Re: APOD: Ganymede's Shadow (2017 Mar 25)

Just keep in mind that astronomical images are normally processed so that the darkest areas are somewhat above totally black, in order to allow subtle detail in the dark areas to be visible. While this image may appear better with a high black point, you will be losing something in some images. Coo...
by LirrelJohn
Tue Mar 28, 2017 12:50 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Ganymede's Shadow (2017 Mar 25)
Replies: 25
Views: 6109

Re: APOD: Ganymede's Shadow (2017 Mar 25)

I'm sure others have noticed the black rectangles near the two moons... but what are they? Was Jupiter too bright compared to the moons to get them all in one exposure? Black rectangles? Where? I see none. There are large black rectangles between each moon and Jupiter- darker than the background. I...
by LirrelJohn
Tue Mar 28, 2017 12:43 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Ganymede's Shadow (2017 Mar 25)
Replies: 25
Views: 6109

Re: APOD: Ganymede's Shadow (2017 Mar 25)

I'm sure others have noticed the black rectangles near the two moons... but what are they? Was Jupiter too bright compared to the moons to get them all in one exposure? Black rectangles? Where? I see none. There are large black rectangles between each moon and Jupiter- darker than the background. I...
by LirrelJohn
Tue Mar 28, 2017 12:32 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Black Hole Accreting with Jet (2017 Mar 27)
Replies: 22
Views: 17943

Re: APOD: Black Hole Accreting with Jet (2017 Mar 27)

Generally, I don't like fakes (artist's impressions, especially of exoplanets), but this one I think is pretty good! In general, I'm with you, especially with singularities and their accretion disks though "artists' impressions" of planets and planetary systems also irk me a little. I wou...
by LirrelJohn
Tue Mar 28, 2017 12:24 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Ganymede's Shadow (2017 Mar 25)
Replies: 25
Views: 6109

Re: APOD: Ganymede's Shadow (2017 Mar 25)

FLPhotoCatcher wrote:I'm sure others have noticed the black rectangles near the two moons... but what are they? Was Jupiter too bright compared to the moons to get them all in one exposure?
Black rectangles? Where? I see none.




I'm manfully avoiding the humorous retort of "Monoliths".
by LirrelJohn
Tue Mar 28, 2017 12:22 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Ganymede's Shadow (2017 Mar 25)
Replies: 25
Views: 6109

Re: APOD: Ganymede's Shadow (2017 Mar 25)

Hi. As you work at an observatory, could I as what "p" is, please? Top left side, I'm guessing that "N" is north but I can't decide between many possibilities for the orthogonal "P" direction. "Positive"? "Prograde"? "Pandas-this-way"? P=p...
by LirrelJohn
Mon Mar 27, 2017 7:26 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Ganymede's Shadow (2017 Mar 25)
Replies: 25
Views: 6109

Re: APOD: Ganymede's Shadow (2017 Mar 25)

Hi. As you work at an observatory, could I as what "p" is, please? Top left side, I'm guessing that "N" is north but I can't decide between many possibilities for the orthogonal "P" direction. "Positive"? "Prograde"? "Pandas-this-way"? Than...
by LirrelJohn
Wed Mar 15, 2017 2:04 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Cone Nebula from Hubble (2017 Mar 15)
Replies: 9
Views: 2138

Re: APOD: The Cone Nebula from Hubble (2017 Mar 15)

Cone? Not so much. Too lumpy, not pointy enough.
by LirrelJohn
Wed Feb 15, 2017 8:39 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: The Rosette Nebula (2017 Feb 14)
Replies: 12
Views: 3241

Re: APOD: The Rosette Nebula (2017 Feb 14)

<<... An example of a DCM heat engine is the drinking bird. The toy works at room temperature.>> Hmm, probably wouldn't work in my room. It's freezing in here. Even my radiometer has stopped rotating, though that might have something to do with it being dark here and old Sol being blocked by a rath...