PoojaMoolya: Created page with "{|border=1 ||'''Time''' |'''Narration''' |- |- ||00:01 || Welcome to this Spoken tutorial on '''Celestial Bodies and Constellations'''. |- ||..."

2021-05-07T10:48:11Z

Created page with "{|border=1 ||<center>'''Time'''</center> |<center>'''Narration'''</center> |- |- ||00:01 || Welcome to this Spoken tutorial on '''Celestial Bodies and Constellations'''. |- ||..."

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{|border=1
||<center>'''Time'''</center>
|<center>'''Narration'''</center>
|-
|-
||00:01
|| Welcome to this Spoken tutorial on '''Celestial Bodies and Constellations'''.
|-
|| 00:05
|| In this tutorial we will learn about,

Celestial bodies, Stars and constellations

|-
|| 00:11
|| Configure the setting of stars and constellations.

|-
|| 00:15
|| To record this tutorial, I am using, '''Ubuntu Linux OS''' version 16.04

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|| 00:23
|| '''Marble '''version 1.12.20 and

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|| 00:27
|| A working internet connection

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|| 00:30
|| The process demonstrated is this tutorial is identical in,

|-
|| 00:35
|| '''Ubuntu Linux OS''', version 18.04

|-
|| 00:38
|| '''Marble '''version 2.2.20

|-
|| 00:43
|| To practise this tutorial, learner should be familiar with '''Marble''' interface.

|-
|| 00:48
|| For the prerequisite '''Marble '''tutorials, please visit this site.

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|| 00:53
|| I have opened the '''Marble''' interface in the default '''Atlas view'''.

|-
|| 00:58
|| Let us zoom out to see the black sky.
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|| 01:02
||I will hide '''Overview map''', '''Compass''' and '''Scalebar''' for clarity.
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|| 01:09
|| Black coloured surface on the interface represents the sky on a clear night.

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|| 01:15
|| When we rotate the globe, we can see various objects present in the sky.

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|| 01:21
|| These objects are called celestial bodies.

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|| 01:24
|| We will now hide all the panels.

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|| 01:27
|| Go to the '''Settings''' menu and select '''Panels'''.

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|| 01:30
|| From the sub-menu select '''Hide All Panels'''.
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||01:35
|| To see more objects in the sky let us keep rotating the globe.

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|| 01:40
|| Notice that we can see sun, moon, stars and other celestial bodies.
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|| 01:47
|| Here we can see the countless bright stars in the sky.

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|| 01:51
|| The nearest star to the '''Earth''' is the '''Sun'''.
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|| 01:54
|| Our best estimates tell us that the '''Milky Way''' is made up of approximately 100 billion stars.

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||02:01
|| Let us now configure the '''settings''' for stars in the''' Marble '''interface

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|| 02:06
|| Click on the '''Settings''' menu. Select''' Configure Marble Virtual Globe''' option.
|-
|| 02:12
|| '''Configure '''window opens.
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|| 02:14
|| From the left '''panel''', select the '''Plugins''' tab.

|-
|| 02:17
|| '''Plugins '''menu opens in the right '''panel'''.

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|| 02:21
|| At the extreme right of the '''Plugins''' menu we see a scroll bar.

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|| 02:26
|| Let us scroll down and locate '''Stars plugin'''.

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|| 02:30
|| Click on the '''Configure''' button corresponding to '''Stars'''.

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|| 02:34
|| '''Configure Stars Plugin''' window opens.

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|| 02:38
|| This window has two tabs, '''Celestial Objects''' and '''Lines and Orientation.'''

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|| 02:46
|| '''Celestial Objects''' tab opens by default.

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|| 02:50
|| In the '''Celestial Objects''' tab, we can see different sections.

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|| 02:54
|| Go to '''Star Magnitude Limit'''.

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|| 02:57
|| '''Star Magnitude Limit '''represents the magnitude of stars seen on the interface.

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|| 03:03
|| Under '''Star Magnitude Limit '''we can see a slider to change the magnitude.

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|| 03:08
|| Drag the slider to 0 magnitude.

|-
|| 03:11
|| Click on the''' OK''' button in the window.

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|| 03:14
|| Click on the '''OK '''button in the '''Configure''' window.
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|| 03:17
|| Notice that stars have disappeared from the interface.

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|| 03:22
|| Now we can clearly see the celestial bodies.
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|| 03:25
|| To open '''Configure Stars Plugin''' window, right-click anywhere on the black sky.

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|| 03:31
|| A context menu opens..

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|| 03:33
|| Select '''Configure''' option from the menu.
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|| 03:37
|| In the '''Configure Stars Plugin '''window, next section is '''Solar System'''
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|| 03:43
|| This section has check-boxes for Sun, Moon and planets in the solar system.

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|| 03:49
|| Let us scroll down to see all the check-boxes.
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|| 03:52
|| By default, sun and moon check-boxes are checked.
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|| 03:57
|| We will check all the boxes to see the planets in the sky.
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||04:01
|| Observe that we cannot click on Earth check-box as we are observing from Earth.
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|| 04:07
|| Next we have two check-boxes.

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|| 04:09
|| '''Use name labels''' and '''Magnify Sun and Moon'''.

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|| 04:14
|| By default these check-boxes are checked.
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|| 04:18
|| These check-boxes are used to show the names of sun, moon and other planets.
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|| 04:26
|| '''Other''' section represents '''Deep Sky objects.'''

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|| 04:30
|| For now we will leave them as default.

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|| 04:33
|| Now click on the '''OK '''button in the window.

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|| 04:36
|| We can see some lines and shapes in the sky. They are constellations.

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|| 04:41
|| Let us see what are constellations.

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|| 04:45
|| A constellation is a group of stars which forms an imaginary shape in the night sky.

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|| 04:51
|| In ''' Latin''', '''Stella''' means a star and '''constellation''' means a set of stars.

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|| 04:57
||Constellations are usually named after mythological characters, people, animals and objects.

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|| 05:05
|| It is like a game of connecting the dots.

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|| 05:08
|| The visible night sky is divided into 88 constellations by astronomers.

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|| 05:14
|| Out of which 12 are zodiac signs.

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|| 05:18
|| For better visibility, I will change the colour of the constellations.

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|| 05:23
|| To open '''Configure Stars Plugin''' window, right-click anywhere on the black sky.

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|| 05:29
|| Select '''Configure''' option from the context menu.
|-
|| 05:33
|| '''Configure Stars Plugin '''window opens.

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|| 05:37
|| Click on the '''Lines and Orientation''' tab.
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|| 05:41
|| Under '''Constellations''', we can see two check-boxes, '''Lines '''and''' Labels.'''

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|| 05:47
|| Click on the button corresponding to '''Lines.'''

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|| 05:50
|| Colour window opens.

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|| 05:53
|| I will select yellow colour from the window.

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|| 05:%7
|| Click on the '''OK''' button in the window.

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|| 06:00
|| Next click on the button corresponding to '''Labels'''.

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|| 06:04
|| From the colour window I will select red colour.

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|| 06:08
|| Click on the '''OK ''' button in the color window.

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|| 06:11
|| Below '''Labels''' we can see''' Names '''drop-down.

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||06:15
|| In the drop-down, '''Latin Name''' is selected by default.

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|| 06:19
|| I will leave it as it is.
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|| 06:22
|| Next is the '''Coordinate Grid''' section.

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|| 06:25
|| Under the '''Coordinate Grid, ''' we see '''Celestial Equator''', '''Celestial Poles''' and '''Ecliptic''' check-boxes.

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|| 06:33
|| I will leave them as default.
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|| 06:36
|| Now let us make the stars visible on the interface.

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|| 06:40
|| Click on the '''Celestial Objects''' tab.

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|| 06:43
|| Under '''Star Magnitude Limit ,''' drag the slider to 7 magnitude.

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|| 06:48
|| Now click on the '''OK '''button in the window.

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|| 06:51
|| We can see the changes in the '''Lines''' and '''Labels''' of each constellation.
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|| 06:56
|| Rotate the globe to see the various zodiac signs.

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|| 07:04
|| Let us summarise.

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|| 07:06
|| In this tutorial we have learnt about

Celestial bodies, Stars and constellations, Configure the settings of stars and constellations

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|| 07:17
|| As an assignment

Explore more about '''Coordinate Grid ''' option.
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|| 07:22
|| Hint: Use '''Celestial Objects''' tab in '''Stars plugin'''.

|-
|| 07:27
||The video at the following link summarizes the Spoken Tutorial project.
Please download and watch it.
|-
|| 07:34
|| The '''Spoken Tutorial Project '''team: conducts workshops using spoken tutorials and gives certificates.

For more details, please write to us.
|-
||07:43
|| Please post your timed queries in this forum.
|-
||07:47
||Spoken Tutorial Project is funded by, MHRD, Government of India.
|-
|| 07:52
|| This tutorial is contributed by Viji Nair and Madhuri Ganapathi from IIT Bombay. Thank you for watching.

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|}

Marble/C3/Celestial-Bodies-and-Constellations/English-timed - Revision history

PoojaMoolya: Created page with "{|border=1 ||'''Time''' |'''Narration''' |- |- ||00:01 || Welcome to this Spoken tutorial on '''Celestial Bodies and Constellations'''. |- ||..."