Hi John, I All,

Thank you very much for this exciting proposition.
I have neither website, nor, of course, any ftp space, but I've just asked Yann Pothier, the webmaster of Ciel Extreme, the french deep sky association, and also member of the Guide users list, if he can do something for you.
I presume he will answer, as soon he reads the message.
Cheers.

Bertrand

----- Original Message -----
From: duble.stars
To: guide-user@yahoogroups.com
Sent: Saturday, March 24, 2007 8:03 PM
Subject: [guide-user] the 2MASS extended source catalogue - deep sky observers interested?



Some very unsmall time ago, soon after its release, I used the
IRSA/IPAC SQL server to search this 1.4 million object list and return
a subset of end-user useful fields from the immense number available
for each entry where each of J, H and Ks photometry was valid.

This returned 1.3 million allsky objects, in an ~ 150 Mb file that
zips down to 40 Mb, ie unsmall.

The tdf plots this data up as position angle orientated dark red
ellipses with info giving dimensions and photometry. It also launches
a 3 arcminute field of view image in each of J, H and Ks in the
browser via a More Info link, and cross links to NED.

Although primarily touted as a galaxy catalogue, and likely containing
about a million galaxies, and thus incorporated into NED as such,
objects that lie in the Galactic Plane, ie the Milky Way, are just as
likely to be gaseous nebula or planetary nebula or other deepsky
objects as they are obscured galaxies, the Crab Nebula is one for
instance.

Away from the Milky Way the objects can be seen to be concentric to
Guide's other catalogued galaxies, with same orientation and so forth.

The question is, is it of interest? I have no webspace, nor desire
for said (my service is capped), whilst 40 Mb is too large for upping
to yahoo files.

So, if anyone's got a bit of ftp space they can spare for a week and
are willing to send me temporary upload details, I can up it there and
they can host it for Guide-User people for a few days, if they can
cope with broadband connections and aren't capped. Latter depends on
true demand, of course.

If no one's interested, that's fine too.

The true database at NASA's IRAS/IPAC servers is immense, and only
sampled via form fed or direct sql queries.

Cheers

John






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