How much of the sky does each image represent?

• by michaelweber

  I'm wondering what the arc-length of each image is, and how large a segment of sky it represents compared to, say, the moon. I'm assuming it's teensy weensy. I'm wondering just how tiny the galaxies we see in the images are, compared to other objects in the sky.

  Posted June 9, 2013 3:47 AM

• by c_cld

  The angular diameter of the moon varies from 29.3 to 34.1 arcminutes.
  Space warps images are 74 arcseconds on the side (440 pix, scale 0.16818 arcsec/pix).
  You could see how objects compare with example of spiral NGC0881 as ASW0003n3e in Space Warps
  and 1237679340031836237 in SDSS viewed by same parameters
  http://skyservice.pha.jhu.edu/DR9/ImgCutout/getjpeg.aspx?ra=34.6903&dec=-6.631&scale=0.1682&width=440&height=440&opt=GL&query=&Grid=on&Label=on but where zoom +/- is available.
  http://skyserver.sdss3.org/dr9/en/tools/chart/chart.asp?ra=34.68860666&dec=-6.63905156

  Posted June 9, 2013 8:49 AM

• by c_cld

  Lunar crater Albategnius could fill a Space Warps image but Hipparchus would overfill it, if I'm correct!

  Posted June 9, 2013 10:37 AM

• by chaoticidealism

  Wow, no wonder there are so many images.

  Posted June 9, 2013 5:52 PM

• by Traumat

  thanks!

  Posted June 11, 2013 12:23 PM

• by michaelweber

  thank you!

  Posted June 16, 2013 6:55 AM

• by anupreeta scientist, admin

  And, the total survey area of CFHTLS is ~300 moons, so we have lots to inspect. But note CFHTLS is still a smaller survey compared to a few others we plan to look at in the future. So, happy classifying!!

  Posted June 19, 2013 3:08 PM