Category:Star Clusters: Difference between revisions

This category lists all known star clusters (NMS), both open & globular.

• Star Cluster page template

Dimensions Determination Method

1. Provide Perplexity the dimensions of the nebula/star cluster/state's established coordinates of its central plane:

A closed asymmetrical shape is represented on a 2D map with the following (JSON format) coordinates. Generate that 2D representation as an image with a defining boundary.

Attach those points; ex:

"points":[{"x":-31.16,"y":10.75,"z":0},{"x":-32.15,"y":8.55,"z":0},{"x":-29.8,"y":7.14,"z":0},{"x":-27.71,"y":10.75,"z":0},{"x":-26.6,"y":12.82,"z":0},{"x":-28.14,"y":12.51,"z":0}]

Confirm the provided image roughly matches the actual shape in SST.

2. Determine the relative center of the the nebula/star cluster/state:

What is the relative coordinate for the geographic center of this shape?

3. Determine the greatest length between established coordinates of the nebula/star cluster/state:

What is the longest dimension that exists within this shape?

4. Determine the upper and lower z-axis values, based on half of that greatest length (i.e., the radius); modify as necessary/pertinent.

5. Determine the approximate volume by the central plane's established dimension and double the radius:

Calculate the volume of a large irregular diffuse nebula (not bipolar) with a fractal boundary and vertical extent of ## units, using the defined cross-sectional area as the base.

6. For star clusters, determine the possible range of stars within that volume:

In an open star cluster (with an average cluster-wide density) with a volume of xxx cubic lightyears, what is the range of expected number of stars?

Building Star Clusters in Starship Tracker

Note: For the sake of simplicity, the dimensions of star clusters in Starship Tracker are perfectly identical from the top to the bottom.

• If a cluster exists completely within one sector plane (ex: 0.00 to 20.00 on the Z-axis): Set its Z-coordinate to the cluster’s center plane, meaning its central Z-coordinate. Label it within SST with the cluster’s normal name, with no suffix.
• If a cluster spans two sector planes: Create two location entries: one for its bottom and one for its top. Name the entries Cluster Name (bottom) and Cluster Name (top). Assign each entry the appropriate designated bottom or top Z-coordinate as established for the cluster. Do not create a separate entry at the cluster’s center Z-plane. Depending on the plane of the central Z-coordinate (ex: Z of +22.5), one of the two representations is sharing the "original" plane (ex: Z of +28.5) and displays the cluster’s name at its geographic center on that base Z-plane (at +22.5), using 75% font size. The secondary representation displays the name at the appropriate end of the cluster’s Z-axis—top or bottom—using 50% font size.
• If a cluster spans three or more planes: Create an entry for every relevant sector plane. Create a center-plane entry using only the cluster’s normal name, with no suffix. Set its Z-coordinate to the cluster’s center Z-coordinate. Create a top entry named Cluster Name (top). Set its Z-coordinate to the designated top Z-coordinate. Create a bottom entry named Cluster Name (bottom). Set its Z-coordinate to the designated bottom Z-coordinate.

For every sector plane between the top and bottom planes, create an intermediate entry. Append the floor (lowest Z-value) of that sector plane to the cluster name (ex: Dorias Cluster (-20)). Set the entry’s Z-coordinate to the midpoint of that sector plane (ex: for a sector plane running from Z = -0.01 through Z = -20.00, use Z = -10.00).