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by Watsisname
28 Jan 2020 17:33
Forum: Science and Astronomy Discussions
Topic: Astrophotography
Replies: 418
Views: 61359

Astrophotography

32673 I'm looking for a program to enhance the resolution of my lunar images.... any ideas? I use  Registax  for lunar/planetary imaging.  It can be a little quirky, but when it works it works very well, and it shines at processing video.  As an example, here's a raw frame from a video I took throu...
by Watsisname
28 Jan 2020 00:06
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 733
Views: 107110

Science and Astronomy News

JackDole wrote:
Qr Bbpost (Possibly we could notice a change in diameter. Maybe we should take a closer look?)

Its size fluctuates naturally, like most giant stars.
by Watsisname
27 Jan 2020 05:19
Forum: Off-topic Discussions
Topic: Mouthwash on Science Communication and Scientific Literacy
Replies: 47
Views: 16294

Mouthwash on Science Communication and Scientific Literacy

No.  This thread ran its course years ago.
by Watsisname
24 Jan 2020 00:02
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy Videos
Replies: 456
Views: 72774

Science and Astronomy Videos

T9rZheTHx08 What sets the composition of nascent planets is a fundamental question in astronomy, and one that is extremely timely considering the large number of exoplanets with very different characteristics that have been discovered in the past years. Whether these planets can host life depends d...
by Watsisname
23 Jan 2020 09:57
Forum: Science and Astronomy Discussions
Topic: Science and Astronomy News
Replies: 733
Views: 107110

Science and Astronomy News

I'm skeptical mainly of the idea that water vapor from ice vaporized by an impact could act to bring the Earth out of a snowball period.  At first glance it makes sense, because water vapor is a greenhouse gas.  But it would take a long time with a high greenhouse effect to end the snowball, and a l...
by Watsisname
22 Jan 2020 01:49
Forum: Science and Astronomy Discussions
Topic: Astrophotography
Replies: 418
Views: 61359

Astrophotography

32625 I still can't work out what that line is in the top of the image, it's in all the light frames but not in the darks so I am guessing it's some reflection in the scope itself? Good question.  My first thought would have been some kind of inconsistent sensor/read noise, but if it's not in the d...
by Watsisname
17 Jan 2020 15:51
Forum: Off-topic Discussions
Topic: Unusual weather
Replies: 342
Views: 71559

Unusual weather

32605 I heard that snow has been making it down to sea level in Washington State! Indeed!  My view on the 15th: https://i.imgur.com/IVeEhHn.jpg Snow along the coast here isn't incredibly rare (maybe every other year on average), but usually it's more like a dusting.  On Wednesday it was 20cm, and g...
by Watsisname
11 Jan 2020 14:34
Forum: Off-topic Discussions
Topic: Unusual weather
Replies: 342
Views: 71559

Unusual weather

An interesting local weather phenomenon is about to strike my area -- the Fraser gap wind (also sometimes called outflow winds or  squamishes ). When cold arctic air comes down out of Canada, it gets dammed up on the east side of the Cascade mountains, except at narrow terrain gaps like fjords, and ...
by Watsisname
08 Jan 2020 16:39
Forum: Off-topic Discussions
Topic: Unusual weather
Replies: 342
Views: 71559

Unusual weather

32540 the compulsive thinking in climate science: "If obsvervations don't exist, there must be a way somehow to reconstruct them". The actual and reasonable thinking is: "If direct observations do not exist, then do there exist methods for reconstructing them by correlations to other...
by Watsisname
05 Jan 2020 10:16
Forum: Science and Astronomy Discussions
Topic: Cosmology Discussion Thread
Replies: 116
Views: 12290

Cosmology Discussion Thread

32529 The observational astronomy text you listed is also highly interesting because it mentions photometry and spectroscopy and how to do scientific research with CCD cameras. Yes, this is what "observational astronomy"  means  nowadays. :)  The difference between it and casual observing...
by Watsisname
04 Jan 2020 14:57
Forum: Science and Astronomy Discussions
Topic: Cosmology Discussion Thread
Replies: 116
Views: 12290

Cosmology Discussion Thread

32520 Is it good for observational astronomy too?  I'm not sure if you're using  observational astronomy in the technical sense?  Almost everything in it is based on observational astronomy, because without observations and data, this would not be a science.  But it doesn't much discuss the details...
by Watsisname
03 Jan 2020 11:28
Forum: Science and Astronomy Discussions
Topic: Cosmology Discussion Thread
Replies: 116
Views: 12290

Cosmology Discussion Thread

Hi  szymas , I think a good fit for you would be the text  Universe: Stars and Galaxies  by Freedman and Kauffmann.  The text gives an overview of most broad topics of astronomy, from its origins with ground-based observing and the function of telescopes, to the planets and solar system, stars (thei...
by Watsisname
03 Jan 2020 07:05
Forum: Off-topic Discussions
Topic: Unusual weather
Replies: 342
Views: 71559

Unusual weather

32511 Wat, what caused that?  Dry weather and high winds? Pretty much.  There's not much snowpack over there right now to hold them down, and a big windstorm just blew 'em all over the place, blocking highways and burying cars. Parts of Australia are obviously dealing with much bigger problems righ...
by Watsisname
03 Jan 2020 05:44
Forum: Off-topic Discussions
Topic: Unusual weather
Replies: 342
Views: 71559

Unusual weather

Meanwhile in eastern Washington, an unusual weather phenomenon was observed.  Tumbleweed storm.
by Watsisname
30 Dec 2019 00:38
Forum: Off-topic Discussions
Topic: Topic for Music Lovers
Replies: 136
Views: 47409

Topic for Music Lovers