Neutron Star texture based in Neutron Star Animations by NASA

[DrJMOS]

Hi celestians

Neutron star is an adapted version since the addon Star Textures CC-BY cubicApoc based in the Neutron Star Animations by NASA:

Steps to install:

1. Download texture and save in the folder called celestia/textures/medres
2. Open celestia.cfg file inside of the celestia folder with note pad and edit the line NeutronStar "neutronstar.jpg"

Explanation:

Because the highest temperatures of the surface of the neutron stars the mean of the electromagnetic spectrum of neutron stars is out of human eyes perception and looks black

[DrJMOS]

Example:

Star of Lich system:

[LukeCEL]

Hi,

Wouldn’t neutron stars still emit lots of visual light? Even if there peak of the spectrum is outside of the visible range, a typical blackbody spectrum still a long tail into the visible range:

http://www.astronomy.ohio-state.edu/~pogge/Ast161/Au06/Unit4/Images/bb3T.jpg

LukeCEL

[MrSpace43]

To me, it seems much more likely that a pulsar would probably look more like this:

(Pulsar texture preset by cubicApocalypse)

[DrJMOS]

Hi,

Ahmm the mean of the surface of neutron stars is 600,000 kelvin, i guess that we can find some deep blue there if we consider all range of spectrum.

Example of the size and appearance of neutron star by NASA NICER:

Solitary Neutron Star Reveals Its True Colors:

"Frederick Walter and Lynn Matthews, of the State University of New York, Stony Brook, now confirm that a bright and steady x-ray source they first observed last year is a neutron star with a visible surface. When looking at the location of the x-ray source, called RX J185635-3754, with the Hubble Space Telescope, they saw a dim blue light that proved the source was a neutron star. "There's really nothing else, no [other] astronomical source that could account for it," says Matthews, as nothing else could be so x-ray bright while being so dim in visible light.."

[fyr02]

This is referring to the apparent brightness, not the absolute brightness.
i.e, from earth the neutron star is very dim, but up close it is still very bright, and the color is in fact as bright as the sun or any other star.

[DrJMOS]

Ahmm a neutron star with same mass and distance (1 AU) that the sun have around 1% of light flux. On the other hand, the energy flow is about blue spectra, the same colored energy flow with a bell with mean in white perceives better than a ramp descending through the blue

Other examples of the image of neutron stars (and logo) in the app to android called Stars and Planets (3dgalaxy.com) https://play.google.com/store/apps/details?id=com.galaxy.starmap&hl=en_US&gl=US

[MrSpace43]

You cannot trust apps to tell you what pulsars look like, because that is an example of a poor reference.

[SevenSpheres]

This is still going on?

Yes, neutron stars are much fainter in visible light than the Sun, but that doesn't mean they would appear dark seen close up. The human eye can adjust to a wide range of brightnesses. For example, the Moon has a fairly low albedo, but when seen at night it appears quite bright, since it's the brightest thing in the sky. Pluto receives much less light from the Sun relative to Earth and so is dark compared to Earth, but if you went there your eyes would adjust and Pluto would appear just as bright as in the New Horizons images.

For some reason, this fact is often ignored when depicting extrasolar objects, such as neutron stars. Maybe because we haven't seen them close up? TrES-2b is another example - this exoplanet is often depicted as pitch black due to its low albedo, but in this case, in addition to the adaptability of the human eye, TrES-2b receives far more light from its star than Earth does from the Sun. Even with its low albedo, it would still be quite bright!

[DrJMOS]

This is still going on?.

Sorry, i am very occupied man in real life (during last 3 months with hard work because my covid patients) and recently I have read the last answers of this controversial texture.

You cannot trust apps to tell you what pulsars look like, because that is an example of a poor reference.

Ok, listen, the App and my texture are Secondary and Tertiary sources based in a Primary source in a web page of the NASA (all my publications are secondary or tertiary source because titled always "by *"), we can ask for a clear answer and claim to the authors of the original image in the NASA webpage: Conceptual Image Lab of NASA Walt Feimer (KBRwyle): Lead Animator, Lisa Poje (USRA): Animator, Clare Skelly (NASA/GSFC): Producer, Scott Wiessinger (USRA): Producer and Michael Lentz (USRA): Art Director from the NASA's Goddard Space Flight Center Conceptual Image Lab because that representation can be misleading.

Perhaps in the next weeks i will edit the texture based in the arguments presented here, regards