Author Topic: Objects that do not exist !  (Read 20976 times)

AlexandredOr

  • Hero Member
  • *****
  • Posts: 25423
    • View Profile
Objects that do not exist !
« on: November 07, 2009, 11:05:04 pm »
Once upon a time Jules started this topic  and Liz this one...
Always stronger ! There are objects with no primary reference number (no objId, that would be objects from the edge) and totally unknown by NED ("the object corresponding to the id specified, undefined does not exist in the database. Please try another object", that would be objects where no one has gone before)... The right conclusion must be that in fact these objects do not exist  ;D
Here is one  ;D ;D

http://cas.sdss.org/astro/en/tools/chart/chart.asp?ra=275.5909&dec=23.47844&scale=0.7923&opt=&width=512&height=512

Baby star opening its eyes on the Universe.

Gargleblaster

  • Hero Member
  • *****
  • Posts: 1376
  • Hitchhikers guide to the galaxies. A Pan-galactic Gargleblaster. Cheers
    • View Profile
Re: Objects that do not exist !
« Reply #1 on: November 07, 2009, 11:15:04 pm »
Hi AlexandreOr

How many objects that don't exist do you think we can collect. Perhaps we could build a catalogue.  ;D ;D ;D ;D

Gargleblaster

Once upon a time Jules started this topic  and Liz this one...
Always stronger ! There are objects with no primary reference number (no objId, that would be objects from the edge) and totally unknown by NED ("the object corresponding to the id specified, undefined does not exist in the database. Please try another object", that would be objects where no one has gone before)... The right conclusion must be that in fact these objects do not exist  ;D
Here is one  ;D ;D

http://cas.sdss.org/astro/en/tools/chart/chart.asp?ra=275.5909&dec=23.47844&scale=0.7923&opt=&width=512&height=512
The brain the size of a planet and they ask me to classify galaxies and now chase after HSV's

AlexandredOr

  • Hero Member
  • *****
  • Posts: 25423
    • View Profile
Re: Objects that do not exist !
« Reply #2 on: November 07, 2009, 11:16:09 pm »
That will be the surprise  :D

Baby star opening its eyes on the Universe.

Budgieye

  • Hero Member
  • *****
  • Posts: 3860
    • View Profile
Re: Objects that do not exist !
« Reply #3 on: November 08, 2009, 05:28:39 am »
nearest ObjID, used to centre http://cas.sdss.org/dr7/en/tools/explore/obj.asp?id=587722953843475000
and marking all those objects with ObjIds
« Last Edit: November 08, 2009, 05:38:26 am by Budgieye »

AlexandredOr

  • Hero Member
  • *****
  • Posts: 25423
    • View Profile
Re: Objects that do not exist !
« Reply #4 on: November 08, 2009, 07:48:20 am »
nearest ObjID, used to centre http://cas.sdss.org/dr7/en/tools/explore/obj.asp?id=587722953843475000
and marking all those objects with ObjIds


Hi Budgieye,
I think that this one doesn't fit... This galaxy has an objId : 587722953843474690 and NED names this great spiral as NGC 6070. It's already there. This one is just "from the edge"  ;) :)

Baby star opening its eyes on the Universe.

AlexandredOr

  • Hero Member
  • *****
  • Posts: 25423
    • View Profile
Re: Objects that do not exist !
« Reply #5 on: November 08, 2009, 03:07:33 pm »

Baby star opening its eyes on the Universe.

Ioannab

  • OotD posters
  • Hero Member
  • *****
  • Posts: 1284
    • View Profile
"Nature herself has never attempted to effect great changes rapidly" - Quintilian

Budgieye

  • Hero Member
  • *****
  • Posts: 3860
    • View Profile
Re: Objects that do not exist !
« Reply #7 on: November 08, 2009, 06:40:35 pm »
/quote]

Hi Budgieye,
I think that this one doesn't fit... This galaxy has an objId : 587722953843474690 and NED names this great spiral as NGC 6070. It's already there. This one is just "from the edge"  ;) :)

Excellent! How did you get that ObjId?

Geoff

  • Hero Member
  • *****
  • Posts: 11892
  • The history of astronomy is a history of receding horizons. - Hubble.
    • View Profile
Re: Objects that do not exist !
« Reply #8 on: November 08, 2009, 08:34:55 pm »

Hi Budgieye,
I think that this one doesn't fit... This galaxy has an objId : 587722953843474690 and NED names this great spiral as NGC 6070. It's already there. This one is just "from the edge"  ;) :)

Excellent! How did you get that ObjId?

Hi Budgieye

Some objects do not have a "prime" photometric id but do have a "secondary" id.  If I see an object I'm interested in which does not have a blue circle denoting a photometric id, I select the object and use the Navi Tool (created by Pluk) to see if it has a secondary id.
See this thread for instructions on setting up Pluk's magic tool: http://www.galaxyzooforum.org/index.php?topic=272465.15
« Last Edit: November 09, 2009, 12:04:39 pm by Geoff »
  Sometimes I think we're alone. Sometimes I think we're not. In either case, the prospect is staggering!- Arthur C. Clarke

Zeus2007

  • OotD posters
  • Hero Member
  • *****
  • Posts: 3231
  • Cheers to those beauties out there!
    • View Profile
Re: Objects that do not exist !
« Reply #9 on: November 09, 2009, 02:47:38 am »
This would have been a perfect fit for a Halloween OOTD!
"The journey of a thousand miles must begin with a single step"
Lao Tzu, Ancient Chinese Philosopher.

AlexandredOr

  • Hero Member
  • *****
  • Posts: 25423
    • View Profile

Baby star opening its eyes on the Universe.

Geoff

  • Hero Member
  • *****
  • Posts: 11892
  • The history of astronomy is a history of receding horizons. - Hubble.
    • View Profile
Re: Objects that do not exist !
« Reply #11 on: November 13, 2009, 10:40:17 am »
  Sometimes I think we're alone. Sometimes I think we're not. In either case, the prospect is staggering!- Arthur C. Clarke

Budgieye

  • Hero Member
  • *****
  • Posts: 3860
    • View Profile
Re: Objects that do not exist !
« Reply #12 on: November 15, 2009, 05:35:00 am »

Hi Budgieye,
I think that this one doesn't fit... This galaxy has an objId : 587722953843474690 and NED names this great spiral as NGC 6070. It's already there. This one is just "from the edge"  ;) :)

Excellent! How did you get that ObjId?

Hi Budgieye

Some objects do not have a "prime" photometric id but do have a "secondary" id.  If I see an object I'm interested in which does not have a blue circle denoting a photometric id, I select the object and use the Navi Tool (created by Pluk) to see if it has a secondary id.
See this thread for instructions on setting up Pluk's magic tool: http://www.galaxyzooforum.org/index.php?topic=272465.15


Thank you. I really must learn the intricacies SDSS database and SQL stuff.

Bruno

  • OotD posters
  • Hero Member
  • *****
  • Posts: 4985
  • Alta in caelo splendet luna micant stellae mille et una
    • View Profile
Re: Objects that do not exist !
« Reply #13 on: November 15, 2009, 10:33:55 am »

How did  you find it? :o
Starting from the coordinates?:) ;) :D ;D
Ciao
Bruno

Cadunt lilia, surgunt rosae
Stellae in caelo sunt radiosae

AlexandredOr

  • Hero Member
  • *****
  • Posts: 25423
    • View Profile
Re: Objects that do not exist !
« Reply #14 on: November 15, 2009, 01:00:28 pm »
Quote from:  Bruno  link=topic=276640.msg396779#msg396779 date=1258281235

How did  you find it? :o
Starting from the coordinates?:) ;) :D ;D

Yes, accessible only with the ra + dec  :)

Baby star opening its eyes on the Universe.