science

discussion

How to find an object by using Aladin, Simbad and NED

Started by ted91
Default_user
about 6 years ago

This is only a simple guide for people like me who actually do not understand all of this, but they like to look at what they found. The easiest way is by using Aladin - Interactive sky atlas. You can download it for free here: http://aladin.u-strasbg.fr/java/nph-aladin.pl?frame=downloading . After you run the Aladin, you insert the coordinates which are located below the image (like here):

http://talk.andromedaproject.org/objects/AAP0000csr

Then press ENTER key, Load Simbad and NED (It may take a while, depending on the size of the displayed area).

You should see something like this:

Now you have to zoom in and find your object.

You must keep in mind that the insert coordinates are coordinates of the center of the image and not the searched object. You have to compare image from Andromeda project and from Aladin.

If you think that you find what you looking for, just click on Simbad or NED link and you will be able to read information about object.

If you want to be sure that you've found what you're looking for, you can compare object coordinates from NED and coordinates image from Andromedaproject.

In this case RA should be a little smaller and DEC little bigger, it looks OK so this is it :

http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=MESSIER+031%3A%5BCCS85%5D+069&extend=no

http://simbad.u-strasbg.fr/simbad/sim-id?Ident=M31GC+J004435%2B415328&NbIdent=1

Features FAQ on NED: http://ned.ipac.caltech.edu/help/faq_index.html

User's guide on Simbad: http://simbad.u-strasbg.fr/guide/index.htx

EDIT: Aladin FAQ: http://aladin.u-strasbg.fr/java/FAQ.htx

I hope that all of you understand what I'm trying to explain here and that this will help at least some of you. :)

Default_user
about 6 years ago

Thanks a ton for writing this up!!!!

Default_user
about 6 years ago

By the way. I'm not sure what is the size of the images in Adromeda project, but my guess is 40'' x 30''.

Default_user
about 6 years ago

You should also know that objects are "moving", so the image several years old may be different then image old just several months even when they are showing same area. I do not know when images from Andromeda project and from Aladin were taken, but sometimes they look different. Especially some stars from our galaxy sometimes do "whatever they want." :)

Default_user
about 6 years ago

Thanks for writing this up! And the Andromeda Project images were taken earlier this year.

Default_user
about 6 years ago

Thank you very much Ted! This is an awesome guide!

Default_user
about 6 years ago

Ted. Thank you very much. Excellent guide.

Default_user
about 6 years ago

How many images are there about?

Default_user
about 6 years ago
ted91 in response to Lazzdar

Lazzdar:

How many images are there about?

Honestly, I have no idea. Maybe you can find your answer here: http://aladin.u-strasbg.fr/java/FAQ.htx#ToC5

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