View Menu


The View Menu has several commands that affect the Galaxy View or Sky View displays:

Center On Sun
This command is enabled only when the Galaxy View tab is selected. It scrolls the view so that the Sun is centered within it.

Center On Selected Object
This command is enabled in either Galaxy or Sky View whenever there is a deep sky object selected in the object table.

Auto Zoom
This command operates in both Galaxy and Sky Views and is enabled whenever an object is selected. If the selected object is outside the viewable area, the command will zoom out to make the object visible. If the selected object is very close to the Sun at the current zoom level (in Galaxy View only), the command will zoom in to display the object better in relation to the Sun.

Reset View
Resets the view to the default zoom level and centers on the Sun.

Cycle Through Views
Cycles between the Galaxy View and the Sky View.

Label Spiral Arms
Label Bright Stars
Label Deep Sky Objects

These commands turn on or off the on-screen labels for the specified objects. Spiral Arm labeling is only available in Galaxy View.

Zoom In
Zoom Out

Zooms in or out when viewing either Galaxy or Sky View.

Show Milky Way Constellation Sectors
This command operates only in Galaxy View. It divides the Milky Way galaxy in the neighborhood of the Sun into sectors, where each sector corresponds to the Milky Way constellation you would see when looking in that direction. Showing the constellation sectors allows you to better understand which part of the Milky Way you are looking at when observing within a particular Milky Way constellation.

For example:
  • When looking at the Milky Way in Sagittarius and Scorpius, you are looking at the next spiral arm inward from the Earth toward the galactic core at galactic longitude 0. This spiral arm is appropriately called the Sagittarius Arm.
  • When viewing the Milky Way in Auriga and Orion you are looking directly away from the galactic center, back through our own spiral arm which is called the Orion-Cygnus Arm. This is in the direction of galactic longitude 180.
  • The next arm outwards from ours is called the Perseus Arm, because a large gap in the dust within our own Orion Arm lets us see through to this outer arm in the direction of Perseus (and Cassiopeia).
  • Cygnus lies at 90 galactic longitude and looks lengthwise along our Orion-Cygnus arm in the direction toward which the Galaxy is rotating.
  • Finally, the southern hemisphere constellation, Vela, lies near galactic longitude 270 and looks down an inter-arm gap in the direction from which the Galaxy is rotating as a whole.

Black On White
Toggles between showing the image as White on Black or Black On White

Show Apparent Data
Shows the data for the object as it appears in the sky as opposed to its physical properties

Show All
Hide All

Shows or Hides all the objects currently listed in the Object Table

Show Selected Objects
Shows the object that are currently selected

Show Notes
Shows the Notes for the current document, replacing the Object Table

View DSS Image
Downloads (if necessary) and shows the Deep Sy Survey image for the currently selected objects

Use Dark Theme
Changes the color scheme used to be one better suited for use at night