Page 9 of 12
Posted: 21.03.2018, 22:40
by Gurren Lagann
Don't worry, John still doesn't understand some things about Celestia (like how to show planets beyond a light-year)
Posted: 22.03.2018, 06:17
by Art Blos
FarGetaNik wrote:John, is there really a good reason to only use power-of-2 textures? I've never had any problems or performance issues with non-power-of-2 textures. Sometimes the source material is in a different size and rescaling it either negatively effects image quality or file size.
I completely agree. Problems can occur only when using a format DDS. In other formats allowed different image resolution.
Posted: 22.03.2018, 10:34
by Art Blos
Added 671 real stars of the Draco Dwarf Galaxy.
Posted: 22.03.2018, 10:37
by Art Blos
Added 142 real stars of the galaxy M 110.
Posted: 22.03.2018, 10:38
by Art Blos
Added 253 real stars of the galaxy M 32.
Posted: 22.03.2018, 13:42
by selden
How much of a problem there is will be determined by the graphics hardware. Some graphics chipsets cannot handle non-power-of-two textures at all. When Celestia detects that limitation, it down-scales the surface texture images so that the results are smaller images which are a factor of two on a side. There will be a performance degradation and increased memory usage while the new textures are being generated. The results can also have visual anomalies because of the reduced resolutions of all of the textures being applied to each object.
Posted: 24.03.2018, 20:19
by Art Blos
The most global processing of all the textures of Jupiter. Surfaces of 1994, 2008, 2016 and 2017 years have been added.
Posted: 24.03.2018, 20:30
by Gurren Lagann
Incredible! How long did you took?
Posted: 24.03.2018, 20:47
by Askaniy
Gurren Lagann, I started doing them two months ago.
They are all close to real colors and contrast and they have poles, taked by Juno.
Posted: 24.03.2018, 21:02
by Gurren Lagann
Oh my, 2 months?! I would had taken 5-7 years...
Posted: 25.03.2018, 11:44
by FarGetaNik
Wow how did you match the contrast, hue and color balance for these textures? For the lack of an absolute reference and highly individual color channels and surface structures that change for each texture, it took me much effort to get close to a consistent result. Even then, I never completed the set with my newest findings.
Posted: 25.03.2018, 14:42
by Askaniy
FarGetaNik wrote:For the lack of an absolute reference and highly individual color channels and surface structures that change for each texture, it took me much effort to get close to a consistent result.
Yes, this is a big problem. These textures are not real colors, but are close to them. I was based on photos with high veracity of a realistic view of Jupiter.
Posted: 25.03.2018, 18:21
by Art Blos
Added 2K-night texture of Jupiter with aurora. It will be disabled by default.
Posted: 25.03.2018, 20:32
by LukeCEL
Art Blos, you know how you added 10 globular clusters to the Magellanic Clouds? Can you update NGC 121 with this new definition, which includes results from Glatt et al. (2009):
Code: Select all
# Note: King concentration index, core radius, and distance for NGC 121 are from here:
# Structural Parameters of Seven Small Magellanic Cloud Intermediate-Age and Old Star
# Clusters
# http://adsabs.harvard.edu/abs/2009AJ....138.1403G
# These were fit to surface-brightness profiles.
Globular "NGC 121:ESO 50-12"
{
RA 0.4478528 # hours
Dec -71.5225806 # degrees
Distance 2.12e+05 # ly
Radius 175 # ly (from 3.5 arcmin)
CoreRadius 0.2 # arcmin
KingConcentration 1.25 # c = log10(r_t/r_c)
AbsMag -7.6871 # V mags
Axis [ -0.7429 -0.2364 -0.6263]
Angle 175.9 # degrees
InfoURL "http://simbad.u-strasbg.fr/sim-id.pl?Ident=NGC+121"
}By the way, I'm trying to add globular clusters to the Andromeda Galaxy right now. However, globular clusters are not located in the plane of the galaxy, so I need
real values from scientific papers. Of all the parameters, this is the real bottleneck. The search for luminosities in the V band continues...
Posted: 26.03.2018, 07:59
by Art Blos
LukeCEL wrote:Art Blos, you know how you added 10 globular clusters to the Magellanic Clouds? Can you update NGC 121 with this new definition, which includes results from Glatt et al. (2009):
I do not understand your sentence.
These is parameters are ready? Or you asking me to update them?
Posted: 27.03.2018, 00:41
by LukeCEL
Art Blos wrote:I do not understand your sentence. These is parameters are ready? Or you asking me to update them?
I am asking you to update them, yes.
Posted: 27.03.2018, 12:07
by toutatis
I want to suggest an Add-on to Celestia that I wrote... this Add-on called "PHA (Potentially Hazardous Asteroids)"... the folder contains ssc and xyz-files... Currently it will displays 1500 potentially hazardous objects ... and it will more with each day! ... Parameters of the orbits for the epoch 2458200,5 (March 23, 2018, 00: 00TDB)... Works with Celestia Origin too...
Posted: 27.03.2018, 20:25
by Art Blos
LukeCEL wrote:I am asking you to update them, yes.
I'll ask differently.
The code that you provided in the message, must be changed by us? I do not understand if you need help with this globular or you simply report new data?
toutatis wrote:I want to suggest an Add-on to Celestia that I wrote... this Add-on called "PHA (Potentially Hazardous Asteroids)"... the folder contains ssc and xyz-files... Currently it will displays 1200 potentially hazardous objects ... and it will more with each day! ... Parameters of the orbits for the epoch 2458200,5 (March 23, 2018, 00: 00TDB)... Works with Celestia Origin too...
Thank you, but any asteroid we can make ourselves. The most famous Potentially Hazardous Asteroids we have.
Posted: 27.03.2018, 20:53
by LukeCEL
Art Blos wrote:The code that you provided in the message, must be changed by us? I do not understand if you need help with this globular or you simply report new data?
I'm reporting new data. I don't want to update it via the Motherlode right now.
Posted: 27.03.2018, 21:06
by Art Blos
LukeCEL wrote:I'm reporting new data. I don't want to update it via the Motherlode right now.
OK. We will update.
