Starship Asterisk*

Why does the moon look so featureless and kind of dark? Since we see the planet Earth way behind the Moon and since the Moon always presents the same face to the Earth because of tidal locking, what you are seeing is the "dark side of the Moon". It is actually more featureless because the...

Why does the moon look so featureless and kind of dark?

Hi,

I did a similar processing of the Mystic Mountain HST dataset, which also clearly shows evaporating gases around its contour.

Ignacio

The statement that this " view spans about 2 degrees or 4 full moons " seems rather fishy to me. :fish: The precise FOV is 1d 3' 47.8" x 1d 18' 46.0". Ignacio So, this is roughly 1 degree x 1 degree, and not 2 degrees wide per the text? How did you determine the exact field of v...

https://apod.nasa.gov/apod/calendar/S_201113.jpg The Tarantula Zone Explanation: The rich field of view spans about 2 degrees or 4 full moons, in the southern constellation Dorado . The statement that this " view spans about 2 degrees or 4 full moons " seems rather fishy to me. :fish: The...

Looking further, I think it is: https://www.nasa.gov/sites/default/file ... 3x2000.png

Ignacio

I registered both images against each other, and cropped the SN area with the same geometry. Could it be the red star at the center, sided by two white stars?

Ignacio

Hi, Being the author of today's image, let me chip in. I love true color astro images, even more so (in general) than false color ones. That being said, one can make a strong case for Hubble palette images. From a purely technical point of few, these images tend to reveal more subtle and fine struct...

I suspected this, the angles of the spikes were identical, as well as the whole look of the image. So lame...

Oh well, I guess we still need an 0.88m scope to get there.

Amazingly sharp and detailed image for a C11! Congrats!

Loved the music too!

Bravo, Rogelio! Beautiful composition!

Earth's Shadow

As perceived in this composite image.

Ignacio Diaz Bobillo
http://www.pampaskies.com

High definition time-lapse video of the event, taken with a focal length of 1500 mm. Watch it in HD!

http://youtu.be/vYPUfzzux3E

Ignacio Diaz Bobillo
http://www.pampaskies.com

Understood. Thanks, Chris and Art.

Ignacio

Are black holes of dark matter possible in theory? If yes, Is there any observational evidence of their existence? It isn't obvious what sort of matter we have once it is "inside" a black hole. Similarly, we don't really think of a black hole as being made out of any particular sort of ma...

Are black holes of dark matter possible in theory? If yes, Is there any observational evidence of their existence?

All of these is so intriguing...

best
Ignacio

Instamatic Venus-Moon Encounter

Copyright: Ignacio Diaz Bobillo

I was late to the main event, but still able to capture in a hurry the beauty of the moment with this single shot taken with a simple grab-and-go camera and a small tripod, through hazy clouds.

Regards,
Ignacio

Actually from 8-31-11. Same caption too. What happened?

In this colors, Cotton Nebula or Slipper Nebula.

Ignacio

Waxing Gibbous Color Moon

Imaged while going through the meridian, high in the sky. 110 DSLR still frames, entirely processed in pixinsight 1.8.

hires: http://www.pampaskies.com/gallery3/var/ ... _hires.JPG

Copyright: Ignacio Diaz Bobillo
http://www.pampaskies.com

It is a very nice image. :) As I like to know the date when an image was taken I found that in the information brought up through the "The alluring color view" link it stated 2013-07-05, which (based on dates with other images in the website) will be 2013 July 5. However, in the image's E...

This is a very beautiful picture of a much-photographed object. I checked out the imaging data of the picture and was a bit confused. As far as I could understand, today's APOD is not an RGB image, photographed through red, green and blue filters. It is also not an image which has been enhanced wit...

Thanks for the explanation. So, to be clear, one should think this as matter (dark and regular) measured in its energy equivalence via mc^2 and then compared with dark energy? In that case, the importance of dark energy strikes me as even more impressive, given the huge conversion factor involved. I...

Basic question: When referring to percentages of dark matter, dark energy and "regular" matter, in terms of what is that proportion exactly? Is it in terms of energy, as in E=mc2 for "regular" matter? Or is it in terms of how dark terms weight versus "regular" matter gr...