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Minor Versionm

by Suchitha Vishwa

Introduction

A Planisphere is a star chart, in the form of two adjustable discs that rotate on a common pivot. It can be adjusted to display the visible stars for any particular time and date. It is an instrument to assist in learning how to recognise stars and constellations.

Video Overview

    • Scissors should be handled carefully.

  1. Note that we provide you with the printouts for a particular latitude, if you need the print out for another latitude, follow Steps 1 and 2; else go to Step 3. Please go to the website https://in-the-sky.org/planisphere/ Go to "Select Latitude" and select the latitude closest to your location.
    • Note that we provide you with the printouts for a particular latitude, if you need the print out for another latitude, follow Steps 1 and 2; else go to Step 3.

    • Please go to the website https://in-the-sky.org/planisphere/

    • Go to "Select Latitude" and select the latitude closest to your location.

    • For example: Bangalore's latitude is 12.97°N. You may select the latitude as 10°N or 15°N.

    • Now click on the 'Download' button.

  2. 'Make your own planisphere' document will be displayed. Save the document. Open to page 4 and print out pages 4 and 5 of the document.
    • 'Make your own planisphere' document will be displayed.

    • Save the document.

    • Open to page 4 and print out pages 4 and 5 of the document.

  3. Take page 5 and cut along the outer line. Also cut out the grey area on page 5. Take page 4 and cut along the outer circle.
    • Take page 5 and cut along the outer line.

    • Also cut out the grey area on page 5.

    • Take page 4 and cut along the outer circle.

  4. Take page 5  and fold along the dotted lines. Insert page 4 inside page 5. Use the board pin to make a hole pin in the centre of page 4 and 5, page 4 already has a small circle displaying the centre.
    • Take page 5 and fold along the dotted lines.

    • Insert page 4 inside page 5.

    • Use the board pin to make a hole pin in the centre of page 4 and 5, page 4 already has a small circle displaying the centre.

  5. You should now have a hole at the center mark, on both pages 4 and 5. Now, take one of the halves of the push button (the one with  the slightly longer nub) and push the nub through the hole from the back side.  the button will  hold the back sheet in place and the nub will protrude out from the front hole. Now , fix the other half of the button  on the nub on the front of the planisphere.
    • You should now have a hole at the center mark, on both pages 4 and 5.

    • Now, take one of the halves of the push button (the one with the slightly longer nub) and push the nub through the hole from the back side. the button will hold the back sheet in place and the nub will protrude out from the front hole.

    • Now , fix the other half of the button on the nub on the front of the planisphere.

    • Pick the date and hour you want to observe, say September 5th ,1.30 am. Now set the date on the rim of the circular disk to the same.

    • The Planisphere's large oval shows the whole sky, and the oval's curved edge represents the horizon you're facing.

    • The constellations you can see are Andromeda, Cygnus, Aries, Pisces etc

    • Ensure correct latitude has been entered.

    • Make sure the Planisphere is pointing to the correct date and time.

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Suchitha Vishwa

Member since: 05/02/2017

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