curious image

• by sisifolibre

  May be is only an coincidence but it seems strange to me. What can be this curious ring in DSS2 blue? an O galaxy? probably an artefact but, what kind? anyone have seen something like this?

  Posted May 1, 2016 8:04 PM

• by voyager1682002 moderator in response to sisifolibre's comment.

  Hi, sisifolibre, you are right, the ring shape could be some kind of telescope artifacts.

  Posted May 2, 2016 4:01 AM

• by onetimegolfer

  AWI0005whd 83.3782554 -3.1321633
  http://skyserver.sdss.org/dr12/en/tools/explore/summary.aspx?ra=83.3782554&dec=-3.1321633
  What are we looking at here in Skyserver?

  Posted May 16, 2016 7:43 PM

• by voyager1682002 moderator in response to onetimegolfer's comment.

  There is an imaging warning for this particular object - This object's photometry may be unreliable.
  The flags are : MAYBE_CR DEBLENDED_AT_EDGE STATIONARY BAD_MOVING_FIT BINNED1 DEBLENDED_AS_PSF SUBTRACTED NOTCHECKED SATURATED INTERP CHILD EDGE

  You can check the explanation of the individual flags here: https://www.sdss3.org/dr9/algorithms/flags_detail.php

  and https://www.sdss3.org/dr8/algorithms/photo_flags.php

  Posted May 17, 2016 4:35 AM

• by onetimegolfer

  And to think I had that one as a #goodcandidate in DD , thought the team had found something to get excited about.. Thanks for the information. I will work it through the process till eliminated.

  Posted May 17, 2016 7:36 AM