Return to the Cloudy Nights Telescope Reviews home page


Observing >> Solar

Pages: 1
pjr200
Post Laureate


Reged: 08/29/07

Loc: Staffordshire, UK
How to make an Earth sized circle for your prom new
      #3031851 - 04/08/09 11:30 AM Attachment (241 downloads)

1)Create a large document- 3000x3000 pixels.

2) Make a large circle, I have used the rulers to make it 30x30 units.

3)Copy and paste the image of your prom, it should now be in a separate layer.

4) Select the circle layer and click Edit>Free transform.

5)Click the link icon in between the W 100% and H100% icons at the top. This allows the rescaling of an object to be the same in both the x and y axis.

6) Rescale the circle until the curvature of both the circle and limb on your image match up (this will take a bit of trail and error and is a bit easier if you alter the transparancy of the prom image).Rescaling is done by clicking a corner of the box that now surrounds the circle. Once they match up, the circle now represents the relative size of the Sun to your image.

7)The Sun is about 108 times larger than the Earth. So we need to rescale the circle so that it is 108 times smaller. Select the circle and click edit>free transform. In the tool bar at the top again click the link icon and enter in one of the boxes either side 0.93%. This will rescale the circle to make it the relative size of the Earth.

8) Move the Earth circle over the image of your prom. Then use the crop tool to remove the surrounding area around your image.

You should now have a circle which can be copy and pasted for any other image as long as you have used the same imaging setup e.g. cameras and barlows


Here are a few images that may help.

Edited by pjr200 (04/08/09 11:48 AM)


Post Extras: Print Post   Remind Me!   Notify Moderator  
pjr200
Post Laureate


Reged: 08/29/07

Loc: Staffordshire, UK
Re: How to make an Earth sized circle for your prom new [Re: pjr200]
      #3031852 - 04/08/09 11:30 AM Attachment (178 downloads)

.

Post Extras: Print Post   Remind Me!   Notify Moderator  
pjr200
Post Laureate


Reged: 08/29/07

Loc: Staffordshire, UK
Re: How to make an Earth sized circle for your prom new [Re: pjr200]
      #3031854 - 04/08/09 11:31 AM Attachment (143 downloads)

..

Post Extras: Print Post   Remind Me!   Notify Moderator  
pjr200
Post Laureate


Reged: 08/29/07

Loc: Staffordshire, UK
Re: How to make an Earth sized circle for your prom new [Re: pjr200]
      #3031856 - 04/08/09 11:32 AM Attachment (138 downloads)

...

Post Extras: Print Post   Remind Me!   Notify Moderator  
pjr200
Post Laureate


Reged: 08/29/07

Loc: Staffordshire, UK
Re: How to make an Earth sized circle for your prom new [Re: pjr200]
      #3031857 - 04/08/09 11:32 AM Attachment (168 downloads)

,

Post Extras: Print Post   Remind Me!   Notify Moderator  
ragebot
Carpal Tunnel


Reged: 08/26/05

Loc: Tallahassee, FL, USA
Re: How to make an Earth sized circle for your prom new [Re: pjr200]
      #3031874 - 04/08/09 11:41 AM

Thanks. This is a sticky candidate.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Sol
Carpal Tunnel


Reged: 08/20/07

Loc: Powys, Wales, UK
Re: How to make an Earth sized circle for your prom new [Re: ragebot]
      #3031958 - 04/08/09 12:25 PM

Nice easy tutorial to follow and well presented too - thanks

Mark


Post Extras: Print Post   Remind Me!   Notify Moderator  
darkstar528
Postmaster
****

Reged: 03/06/07

Loc: Hodgenville, Kentucky, USA
Re: How to make an Earth sized circle for your prom new [Re: Sol]
      #3032058 - 04/08/09 01:12 PM

Very kewl, thank you for that!...

Post Extras: Print Post   Remind Me!   Notify Moderator  
EmielVeldhuis
Carpal Tunnel


Reged: 01/29/07

Loc: Zwolle, the Netherlands
Re: How to make an Earth sized circle for your prom new [Re: darkstar528]
      #3032122 - 04/08/09 01:49 PM

Very handy tutorial, Paul!
Can I post it on SolarLive for others to use?
Name mentioned ofcours!

greetz emiel


Post Extras: Print Post   Remind Me!   Notify Moderator  
pjr200
Post Laureate


Reged: 08/29/07

Loc: Staffordshire, UK
Re: How to make an Earth sized circle for your prom new [Re: EmielVeldhuis]
      #3032136 - 04/08/09 01:56 PM

Thanks everyone. Emiel, feel free to post it on solarlive

Post Extras: Print Post   Remind Me!   Notify Moderator  
EmielVeldhuis
Carpal Tunnel


Reged: 01/29/07

Loc: Zwolle, the Netherlands
Re: How to make an Earth sized circle for your prom new [Re: pjr200]
      #3032587 - 04/08/09 05:40 PM

Thanks Paul!

Post Extras: Print Post   Remind Me!   Notify Moderator  
ZielkeNightsky
Pooh-Bah
*****

Reged: 10/01/06

Loc: Denmark
Re: How to make an Earth sized circle for your prom new [Re: EmielVeldhuis]
      #3032746 - 04/08/09 06:56 PM

Thanks Paul. It works great and very easy to do. Just swapped the cirlce with a Nasa image of Earth.

Post Extras: Print Post   Remind Me!   Notify Moderator  
DavidM
Pooh-Bah


Reged: 03/25/06

Loc: Perth, Australia
Re: How to make an Earth sized circle for your prom new [Re: ZielkeNightsky]
      #3033354 - 04/09/09 01:32 AM

Thanks Paul,
I was wondering how to go about doing this.


Post Extras: Print Post   Remind Me!   Notify Moderator  
spaceydee
Postmaster
*****

Reged: 04/16/04

Loc: Where the Kittens Are
Re: How to make an Earth sized circle for your prom new [Re: DavidM]
      #3034678 - 04/09/09 06:07 PM

Thank you Paul, I have added a link to this thread in the solar tips sticky near the top of the solar forum

Post Extras: Print Post   Remind Me!   Notify Moderator  
pjr200
Post Laureate


Reged: 08/29/07

Loc: Staffordshire, UK
Re: How to make an Earth sized circle for your prom [Re: spaceydee]
      #3034781 - 04/09/09 07:21 PM

Thanks everyone, Thanks Dee.

Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Extra information
4 registered and 8 anonymous users are browsing this forum.

Moderator:  Bowmoreman, KWB 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 2954

Jump to

CN Forums Home




Cloudy Nights Sponsor: Astronomics