Celestia Forums

Posted: **18.11.2018, 15:53**

new topic for your addons on Galaxies

Posted: **16.01.2019, 02:35**

Here's Arp 302 (VV 340, UGC 9618). It's nicknamed the Exclamation Point Galaxy (see this image for a reference). It's a pair of spiral galaxies that are just about to interact with each other.

This is a screenshot:

To "install" this mini add-on, just copy-paste the following code into a .DSC file in your "extras" folder:

Code: Select all

Galaxy "Arp 302 S:UGC 9618 S:PGC 53433:Exclamation Point Galaxy"
{
   Type "Sc"
   RA      14.9500893 # hours, not degrees
   Dec      24.6067088
   Distance   4.5e+08
   Radius     40000 # estimate
   AbsMag           -20.02
   Angle           71.08215
   Axis          [ -0.825014 0.564761 0.019916 ]
}

Galaxy "Arp 302 N:UGC 9618 N:PGC 53432"
{
   Type "Sb"
   RA      14.9501850
   Dec      24.6174083
   Distance   4.5e+08
   Radius     40000 # estimate
   AbsMag           -20.42
   Angle           67.15151
   Axis          [ -0.781896 0.002859 0.623402 ]
}

Data is from SIMBAD and HyperLEDA.

Posted: **16.01.2019, 09:23**

simple and efficient
thank you

:clap:

Posted: **18.01.2019, 19:29**

LukeCEL wrote:Here's Arp 302
This is a screenshot:

Ohh

I like it ! Thank you, I didnt know we could do that in Celestia.
I will have to have a play

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