Siena Galaxy Atlas "Updated" 400,000 Galaxies

[KingClinton]

Interesting new resource for the galaxy hunters among us.

https://www.google.com/url?rct=j&sa=t&u ... mvEKylrV-W

[Graeme1858]

Thanks Clinton.

That could become a very useful tool.

Graeme

[Lady Fraktor]

Only 400,000 entries?
Alan will have gone through that before a week is finished

[Bigzmey]

Thanks Clinton! I poked around but not sure how it works. I typed in a few galaxy IDs (IC 3, NGC 95, etc.) but the search returned zero results.

[StarHugger]

https://sga.legacysurvey.org/

[helicon]

Hmmmm-I'll check it out

[kt4hx]

If I am reading the page correct, it looks like they are utilizing the HyperLeda catalogue as the basis for the catalogue. What I found is that to search for an object out of say the NGC or IC catalogues, one must omit spaces and know how many numerical places fit the specific catalogue. For example, for NGC 7814 I would type in NGC7814 and get a result. For NGC 1, I would type in NGC0001 because there are four numerical places utilized in the NGC as it contains over 1000 objects, but less than 10,000. Same for the IC. But there seem to be some issues with searching. I tried different catalogue designations for Messier 31 but could never get a result. So, there is a trick to it. With regards to Andrey's attempt with IC 3, I tried it using IC0003 and got the object I was looking for. Same for something like NGC 16 (used NGC0016). But when searching for Messier galaxies, it was hit and miss for some reason. I could get M101 using the NGC designation, but not M31 or M83. No idea. In looking at the data provided it is more scientific based, and may be of some interest for galaxy hunters. But how much so will depend on the individual. I am not sure its something I would make use of on a regular basis honestly.

[Bigzmey]

I like to look at target photos to compare to what I saw visually. Telescopius.com works well for that purpose and you don't need to add extra "0"s I also use it to generate observing lists.

[helicon]

Agree that telescopius is useful as you can see pics and facts about adjacent galaxies to observe...

[kt4hx]

I like to look at target photos to compare to what I saw visually. Telescopius.com works well for that purpose and you don't need to add extra "0"s I also use it to generate observing lists.

Quite true Andrey. Telescopius is geared toward amateur astronomers, while the SGA is more for professionals. While the interests of both groups do cross-over, their data needs are often significantly different. For images, I also will utilize this site as well:

https://cseligman.com/text/atlas/ngc00.htm#ngcic


For descriptions I like Steve Gottlieb's observing notes:

https://www.astronomy-mall.com/Adventur ... ve.ngc.htm


The above two sites also contain historical information which I utilize as well. One thing I've noted of late is that Telescopius seems to have incorporated a large number of UGC galaxies, which for me is a very good thing. Gottlieb also includes the UGC galaxies in his descriptions as well.