You are not logged in. [Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Observing >> Solar Previous   Index   Next   Threaded   Pages: 1 pjr200 Carpal Tunnel Reged: 08/29/07 Posts: 2406 Loc: Staffordshire, UK How to make an Earth sized circle for your prom       #3031851 - 04/08/09 11:30 AM Attachment (42 downloads) Edit   Reply   Quote Quick Reply   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. -------------------- Best regards Paul Robertson My Gallery Edited by pjr200 (04/08/09 11:48 AM) Post Extras:       pjr200 Carpal Tunnel Reged: 08/29/07 Posts: 2406 Loc: Staffordshire, UK Re: How to make an Earth sized circle for your prom [Re: pjr200]       #3031852 - 04/08/09 11:30 AM Attachment (27 downloads) Edit   Reply   Quote Quick Reply   . -------------------- Best regards Paul Robertson My Gallery Post Extras:       pjr200 Carpal Tunnel Reged: 08/29/07 Posts: 2406 Loc: Staffordshire, UK Re: How to make an Earth sized circle for your prom [Re: pjr200]       #3031854 - 04/08/09 11:31 AM Attachment (24 downloads) Edit   Reply   Quote Quick Reply   .. -------------------- Best regards Paul Robertson My Gallery Post Extras:       pjr200 Carpal Tunnel Reged: 08/29/07 Posts: 2406 Loc: Staffordshire, UK Re: How to make an Earth sized circle for your prom [Re: pjr200]       #3031856 - 04/08/09 11:32 AM Attachment (25 downloads) Edit   Reply   Quote Quick Reply   ... -------------------- Best regards Paul Robertson My Gallery Post Extras:       pjr200 Carpal Tunnel Reged: 08/29/07 Posts: 2406 Loc: Staffordshire, UK Re: How to make an Earth sized circle for your prom [Re: pjr200]       #3031857 - 04/08/09 11:32 AM Attachment (26 downloads) Edit   Reply   Quote Quick Reply   , -------------------- Best regards Paul Robertson My Gallery Post Extras:       ragebot Carpal Tunnel Reged: 08/26/05 Posts: 1671 Loc: Tallahassee, FL, USA Re: How to make an Earth sized circle for your prom [Re: pjr200]       #3031874 - 04/08/09 11:41 AM Edit   Reply   Quote Quick Reply   Thanks. This is a sticky candidate. -------------------- Meade ETX 90, Meade AR5, Orion ED80, Atlas GT, 8 in Newt, Coronado DS SM40, Garrett 10.5X70, Sigma SD10, SD14, Canon 1D2, Xti, Nikon CP4500, C-14 Post Extras:       Sol Carpal Tunnel Reged: 08/20/07 Posts: 1958 Loc: Powys, Wales, UK Re: How to make an Earth sized circle for your prom [Re: ragebot]       #3031958 - 04/08/09 12:25 PM Edit   Reply   Quote Quick Reply   Nice easy tutorial to follow and well presented too - thanks Mark -------------------- Visit the Sunnymeade Astro Solar Blog http://sunnymeadeastro.blogspot.com/ Post Extras:       darkstar528 Postmaster Reged: 03/06/07 Posts: 6764 Loc: Hodgenville, Kentucky, USA Re: How to make an Earth sized circle for your prom [Re: Sol]       #3032058 - 04/08/09 01:12 PM Edit   Reply   Quote Quick Reply   Very kewl, thank you for that!... -------------------- Blue skies, Stephen "Darkstar" Ames PST(#96038), VIXEN 8-24mm,CEMAX 2x Barlow, Thousand Oaks White Light Filter and a Meade Elec EP CFI, CFII, MEI, working on EIEIO! BAA Member My solar site: http://seemysunspot.com Post Extras:       EmielVeldhuis Carpal Tunnel Reged: 01/29/07 Posts: 2479 Loc: Zwolle, the Netherlands Re: How to make an Earth sized circle for your prom [Re: darkstar528]       #3032122 - 04/08/09 01:49 PM Edit   Reply   Quote Quick Reply   Very handy tutorial, Paul! Can I post it on SolarLive for others to use? Name mentioned ofcours! greetz emiel -------------------- 8" LX10 SCT,Skywatcher NEQ6pro,Vixen SP,Skywatcher 150/1200mm refractor, Coronado PST's: Gold and Blue,Lunt LS60T-HA and CaK b/600, b/wToUcamSC3RAWmod.and a DMK 31AU03as. http://astrosurf.com/obsolar/colabora/colaboradores/veldhuis.html www.solarlive.nu Experience our nearest GV2 star, live at SolarLive! www.solarlive.nu Post Extras:       pjr200 Carpal Tunnel Reged: 08/29/07 Posts: 2406 Loc: Staffordshire, UK Re: How to make an Earth sized circle for your prom [Re: EmielVeldhuis]       #3032136 - 04/08/09 01:56 PM Edit   Reply   Quote Quick Reply   Thanks everyone. Emiel, feel free to post it on solarlive -------------------- Best regards Paul Robertson My Gallery Post Extras:       EmielVeldhuis Carpal Tunnel Reged: 01/29/07 Posts: 2479 Loc: Zwolle, the Netherlands Re: How to make an Earth sized circle for your prom [Re: pjr200]       #3032587 - 04/08/09 05:40 PM Edit   Reply   Quote Quick Reply   Thanks Paul! -------------------- 8" LX10 SCT,Skywatcher NEQ6pro,Vixen SP,Skywatcher 150/1200mm refractor, Coronado PST's: Gold and Blue,Lunt LS60T-HA and CaK b/600, b/wToUcamSC3RAWmod.and a DMK 31AU03as. http://astrosurf.com/obsolar/colabora/colaboradores/veldhuis.html www.solarlive.nu Experience our nearest GV2 star, live at SolarLive! www.solarlive.nu Post Extras:       ZielkeNightsky sage Reged: 10/01/06 Posts: 378 Loc: Denmark Re: How to make an Earth sized circle for your prom [Re: EmielVeldhuis]       #3032746 - 04/08/09 06:56 PM Edit   Reply   Quote Quick Reply   Thanks Paul. It works great and very easy to do. Just swapped the cirlce with a Nasa image of Earth. -------------------- Lars 10", 8", 4" Newton 80mm Scopos 4" Achro Post Extras:       DavidM sage Reged: 03/25/06 Posts: 217 Loc: Sohar, Oman Re: How to make an Earth sized circle for your prom [Re: ZielkeNightsky]       #3033354 - 04/09/09 01:32 AM Edit   Reply   Quote Quick Reply   Thanks Paul, I was wondering how to go about doing this. -------------------- David 16" Meade Lightbridge 70 mm Coronado Helios 1 H-a scope 8" Celestron 8iSE 80 mm Orion EON Post Extras:       spaceydee Postmaster Reged: 04/16/04 Posts: 16116 Loc: Where the Kittens Are Re: How to make an Earth sized circle for your prom [Re: DavidM]       #3034678 - 04/09/09 06:07 PM Edit   Reply   Quote Quick Reply   Thank you Paul, I have added a link to this thread in the solar tips sticky near the top of the solar forum -------------------- Dee space-scientist student violinist Nexstar8i,SV80S,80/9D,FC100,94 Brandon,TMB92SS,GM8 8" f/7 Discovery,12.5" Portaball, PST Post Extras:       pjr200 Carpal Tunnel Reged: 08/29/07 Posts: 2406 Loc: Staffordshire, UK Re: How to make an Earth sized circle for your prom [Re: spaceydee]       #3034781 - 04/09/09 07:21 PM Edit   Reply   Quote Quick Reply   Thanks everyone, Thanks Dee. -------------------- Best regards Paul Robertson My Gallery Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 15 registered and 3 anonymous users are browsing this forum. 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