Variable star?

• by PreJhTrg

  Hi all,

  Does anyone know if this is a variable star or an artifact brightening @ 5 o'clock? It's certainly not behaving like the rest of the stars in these images. If real, I doubt it would be unknown.

  Thanks for your help,

  Posted December 2, 2015 11:33 AM

• by hightower73

  the only thing i can see is the single white dot thats dancing about in the set, if thats what you are talking about then its its a lens artifact, most likely a spot of dust on the lens when the picture was taken.

  Posted December 2, 2015 1:15 PM

• by PreJhTrg

  Thanks for the reply, but the object i'm describing is definetly a (bright) star slowly getting brighter. I don't know if the brightening is some sort of artifact, but I know the object I'm describing is definitely real.

  Here's the star's location in the images:
  255*255 Pixels
  (0.0) Upper left

  coordinates: (156.182)

  Thanks again,

  Posted December 2, 2015 4:00 PM

• by MvGulik

  Yep, variable star.

  NSVS 13552432 -- Variable Star of RR Lyr type

  AladinLite

  Posted December 2, 2015 4:15 PM

• by PreJhTrg

  Thanks for the reply, how are you able to get the coordinates for objects in these images?
  Thanks again,

  Posted December 2, 2015 4:34 PM

• by MvGulik

  I calculate some nearby sky-coordinate based on the CSS location part ("N04089" in this case).
  And than try to find the right spot in Aladin-Lite and Aladin-Desktop. (more as practice to get better at finding the right area.)

  But if that fails ... I just use nova.astrometry.net 😃

  O yea. One's you know the right location, Aladin-Desktop will give just about everything you need to find what's what in that area.

  Posted December 2, 2015 6:28 PM

• by hightower73

  right got it now, i missed it due to looking in the wrong area on max zoom sorry

  Posted December 2, 2015 11:19 PM

• by PreJhTrg

  Ok, thanks! 😃

  Posted December 3, 2015 10:28 AM