Motherlode Peer Group Review

[selden]

My Sloan DR2 and IRAS galaxy addons probably should be considered obsolete, although not critically so: they still give a visual representation of the large scale structure of the universe, which was my primary intent. My understanding is that someone else is working on creating comparable models using more recent datasets.

Another issue is that I used a Hubble constant of 72 when calculating galaxy and quasar positions. My understanding is that the galaxy catalog included with Celestia has distances which were calculated using a Hubble constant of 73.2, so the distances are different. Apparently the current official value published by the PDG is 73 +/- 3.

[Kolano]

If Selden had wished to upload his add-ons though,
I'm certain that he would have done this already.

I thought he had some time ago. Of course Selden also provides them on his site.

My Sloan DR2 and IRAS galaxy addons probably should be considered obsolete, although not critically so: they still give a visual representation of the large scale structure of the universe, which was my primary intent. My understanding is that someone else is working on creating comparable models using more recent datasets.

I'd look forward to seeing improved galaxy models from whomever is working on them. Thank you for putting the original set together, Selden. I normally keep them disabled, but every now its nice to load them up and feel really small.

[Adirondack]

I though he had some time ago. Of course Selden also provides them on his site.

Kolano,

since 'SDSS DR2 Galaxies' is a data plot add-on you have to look at the 'Extrasolar: Data Plots'-section:
http://www.celestiamotherlode.net/catalog/dataplots.php
His add-on is available there since 2004-11-04!

Adirondack

[Kolano]

I though he had some time ago. Of course Selden also provides them on his site.

Kolano,

since 'SDSS DR2 Galaxies' is a data plot add-on you have to look at the 'Extrasolar: Data Plots'-section:
http://www.celestiamotherlode.net/catalog/dataplots.php
His add-on is available there since 2004-11-04!

Adirondack

Ah, thanks Adirondack I had overlooked that section.