noted Stellarium 0.20.2 shortcuts

Performed testing with Stellarium 0.20.2 on Windows 10.

This is an update of my keyboard and mouse shortcuts listing. This reference is for Windows and Macintosh computers.

The "notes" column to the far right with numbers are keyed to the footnotes. For example, 1 is used to indicate newly added or recently changed items.

controlling the surroundings					*
show Location window		F6		Fn F6	4
toggle cardinal compass points	—	q	—	q
toggle ground and buildings		g		g
toggle ground fog		f		f
toggle atmosphere or air		a		a
toggle sky glow/building lights		Shift g		Shift g
ground (mountain) labels		Ctrl Shift g		⌘ Shift g
return to "home" (start-up) view		Ctrl h		(none)	2
controlling the sky - deep sky
toggle stars		s		s
toggle star labels		Alt s		Option s
toggle constellation lines		c		c
toggle constellation boundaries		b		b
toggle constellation labels		v		v
toggle constellation artwork		r		r
toggle asterism lines		Alt a		Option a
toggle asterism labels		Alt v		Option v
toggle ray helpers		Alt r		Option r
toggle DSO/nebula labels		n or d		n or d
nebula background images		i		i
toggle quasars		Ctrl Alt q		⌘ Option q	3, 5
toggle zodiacal light		Ctrl Shift z		⌘ Shift z
toggle Milky Way		m		m
toggle digital sky survey		Ctrl Alt d		⌘ Option d	6
exoplanet labels, indicators		Ctrl Alt e		⌘ Option e	5
show Sky and Viewing Options		F4		Fn F4
single constellation mode
remove previous constellations		w		w	7
show all constellations		Alt w		Option w	1
the sky - solar system
toggle planets and Moon		p		p
toggle planet and Moon labels		Alt p		Option p
toggle planet markers		Ctrl p		⌘ p
toggle planet orbits		o		o
toggle star-lore planet names		Ctrl Shift n		⌘ Shift n
toggle planet trails		Shift t		Shift t
toggle planet surface labels		Alt n		Option n	9
toggle meteor radiants		Ctrl Shift m		⌘ Shift m
toggle meteor radiant labels		Shift m		Shift m
controlling lines
toggle altitude/azimuth grid		z		z
toggle equatorial grid		e		e
toggle ecliptic line		, (comma)		,
toggle celestial equator		. (period)		.
toggle meridian line		;		;
toggle horizon line		h		h
changing image presentation
flip horizontally		Ctrl Shift h		⌘ Shift h
flip vertically		Ctrl Shift v		⌘ Shift v
equatorial or azimuthal mode		Ctrl m		⌘ m
look to east (or n, w, s)		Shift e		Shift e
look up to zenith		Shift z		Shift z
look to NCP		Alt Shift n		Option Shift n
look to SCP		Alt Shift s		Option Shift s
zooming
zoom in		PgUp or Ctrl Up Arrow		Fn Up Arrow
zoom out		PgDn or Ctrl Dn Arrow		Fn Down Arrow
zoom in or out slowly		Shift with keys		Shift with keys
quickly zoom in/out		mouse wheel		mouse wheel
zoom close to selected object		/ (slash)		/
zoom out fully		\ (backslash)		\
zoom very close to planet		/ twice		/ twice
set field of view (FOV) to 180°		Ctrl Alt 1		(none)
set FOV to 90°		Ctrl Alt 2		(none)
... through ...		...		...
set FOV to 2°		Ctrl Alt 8		(none)
set to 1°		Ctrl Alt 9		(none)
to ½°		Ctrl Alt 0		(none)
panning
quickly pan celestial sphere		left-drag		drag
pan right		Right Arrow		Right Arrow
pan left		Left Arrow		Left Arrow
pan up		Up Arrow		Up Arrow
pan down		Down Arrow		Down Arrow
pan a small amount		Shift Arrow-key		Shift Arrow-key
controlling time flow
set date/time to now		8		8
set time rate to zero		7		7
increase time flow		l (lower case L)		l
decrease time flow		j		j
run time at normal rate		k		k
increase time flow a little		Shift l (that's L)		Shift l
decrease time flow a little		Shift j		Shift j
drag for time		Ctrl drag		Control drag	10
flip time direction		0 (zero)		0 (zero)	1
time with mouse wheel
increase/decrease by minutes		Ctrl		⌘
increase/decrease by hours		Ctrl Shift		⌘ Shift
increase/decrease by days		Ctrl Alt		⌘ Option
increase/decrease by years		Ctrl Alt Shift		(none)
controlling "regular" time
show date/time window		F5		Fn F5
forward 1 hour solar		Ctrl = (equal)		⌘ =
backward 1 hour		Ctrl - (hyphen)		⌘ -
forward 1 day solar		= (equal)		=
backward 1 day		- (hyphen)		-
forward 1 week solar		]		]
backward 1 week		[		[
controlling sidereal time
forward 1 day sidereal		Alt = (equal)		Option =
backward 1 day		Alt - (hyphen)		Option -
forward 1 year sidereal		Ctrl Alt Shift ]		⌘ Option Shift ]
backward 1 year		Ctrl Alt Shift [		⌘ Option Shift [
working with objects
select an object		left-click		click
centre on selected object		spacebar		spacebar
toggle tracking of object		t		t
deselect object		right-click or Ctrl Spacebar		⌘-click or  ⌘ Spacebar	1
display search dialogue box		Ctrl f or F3		⌘ f or Fn F3
go, i.e. travel, to a planet		Ctrl g		⌘ g
toggle angular measurement		Ctrl a		⌘ a	5
copy object info to clipboard		Ctrl Shift c		⌘ Shift c	1
add custom marker		Shift click		Shift click
remove custom marker		Shift right-click		Control Shift click
remove all custom markers		Alt Shift right-click		Opt. Ctrl. Sh. click
working with satellites					5
configure artificial satellites		Alt z		Option z
toggle satellite display or "hints"		Ctrl z		⌘ z
toggle satellite labels		Alt Shift z		Alt Shift z
controlling the screen
toggle night (red light) mode		Ctrl n		⌘ n
toggle full-screen mode		F11		F11	8
toggle toolbars/menus, i.e. GUI		Ctrl t		⌘ t
save screenshot to disk		Ctrl s		⌘ s
toggle planet selection marker		Ctrl Shift p		⌘ Shift p
close a window/dialogue box		Esc		Esc
controlling the application
show configuration window		F2		Fn F2
show help/about window		F1		Fn F1
show script console window		F12		(none)
keyboard shortcuts window		F7		Fn F7
show Astro. Calc. window		F10		Fn F10
show Bookmarks window		Alt b		Option b
show Exoplanets config window		Alt e		Option e	5
show meteor settings window		Ctrl Alt Shift m		⌘ Option Shift m	5
show meteor search window		Ctrl Alt m		⌘ Option m	5
quit from Stellarium		Ctrl q		⌘ q

Notes:

1. Recently added or changed shortcuts.
2. On the Mac, the shortcut ⌘ h hides the app. This is an operating system shortcut.
3. On the Mac, the shortcut ⌘ Shift q causes Stellarium to quit. 
4. The operation of function keys on both Windows and Mac computers may require the use of a function or Fn key.
5. Keyboard shortcuts associated with a plug-in. They may not function if the plug-in is not active.
6. The digital sky survey layering feature refers to the display as a "hierarchical progressive" sky survey.
7. The "remove" constellation shortcut applies when "single constellation mode" is active, as triggered in Configuration, Tools.
8. The F11 does not work on iMac 21.5 and 2011 wireless keyboard.
9. Referred to as surface "nomenclature" labels. This marks detailed surface features on planets, for example, Olympus Mons on Mars.
10. On the Mac, only works when mouse is dragged horizontally. Only changes seconds.

Some shortcuts were omitted. Notably those for the oculars plug-in. And those to do with scripting.

Finally, of course, Mac documentation and keyboard labelling is inconsistent. We note the symbols below:

⌘ (cloverleaf) is the Command key,

      with the apple symbol on very old systems

⌃ (carat) is the Control key

⌥ is the Option (alt) or alternate key

⇧ (up arrow) is the Shift key

⇪ (up arrow with segments) indicates that the Caps Lock is used

fn or Fn is the Function key

Please report errors in the comments below...

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See my "top" list for a very short collection of most frequently used, most helpful, techniques. Handy if heading into a presentation.