Abell 31 data is wrong V24.4

[trigger-horses]

When searching for Abell 31 in V24.4 Win 11 the cursor goes to the wrong place. The RA and Dec are incorrect or the object title is wrong.

[gzotti]

You know the difference of Abell Galaxy clusters and Abell Planetaries?

@alex-w maybe the current Abell (ACO) should be finally renamed to ACO after all, and the popular Abell planetaries added.

[alex-w]

@alex-w maybe the current Abell (ACO) should be finally renamed to ACO after all, and the popular Abell planetaries added.

See #3330 and #1473 again. If you want to see ACO designation for clusters of galaxies, then we shouldn’t use Abell designation for planetaries (it should be PN A66). Or we should use Abell designation for all Abell’s catalogs, but with adding suffixes for different catalogues (not officially known designations) and we’ll get similar reports again, because users will ignore suffixes as currently ignored type of catalog.

[gzotti]

I see no need to overcomplicate things. It is just one more small (cross-reference only?) catalog, and there are perfect ways to label them.

From my share of amateur images, the planetaries seem more popular, and they are always described as Abell XY. See my #1473 (comment), #3330 (comment), #3330 (comment).

I think most users will accept using ACO for Galaxy clusters and Abell for planetaries as they see them in magazines. In the catalog selection GUI, these could be labeled Abell (ACO) and Abell (A66). Searching for Abell XY could retrieve both Abell (ACO) XY and Abell (A66) XY. Or just search for ACO XY to find galaxy clusters and Abell XY to find planetary nebula in the PN A66 Abell catalog.

You write about 6 catalogs. I don't know the other 4, and IIRC they were never asked for in this forum.

[alex-w]

I see no need to overcomplicate things. It is just one more small (cross-reference only?) catalog, and there are perfect ways to label them.

Yes, we should change format and re-create DSO catalog for adding this small catalog, plus change the GUI… sorry, but this is not for 25.1!

From my share of amateur images, the planetaries seem more popular, and they are always described as Abell XY. See my #1473 (comment), #3330 (comment), #3330 (comment).

Abell is most popular designation for planetaries for amateurs, but for professionals Abell is most popular designation for clusters of galaxies.

I think most users will accept using ACO for Galaxy clusters and Abell for planetaries as they see them in magazines. In the catalog selection GUI, these could be labeled Abell (ACO) and Abell (A66). Searching for Abell XY could retrieve both Abell (ACO) XY and Abell (A66) XY

SIMBAD uses Abell as synonym for ACO and guess what will get users after just typing Abell 31 in search tool… Yes, we can add suffixes for these catalogs, but I fear this is not resolved the original “problem”.

Or just search for ACO XY to find galaxy clusters

It works already, but who’s uses it?

and Abell XY to find planetary nebula in the PN A66 Abell catalog.

…and we got bug reports from professionals for wrong coordinates for another Abell object as it was before…

[alex-w]

All reports for Abell objects/catalogs: #1473, #1486, #1526, #2071, #3078, and #3330

[gzotti]

Of course not 25.1, nobody asked for it. Just that leaving out one catalog will always raise the demand to have it. Users, also pros, will certainly get used to our labels.

[trigger-horses]

Thanks guys, I wasn't aware there were Abell catalogs for galaxy clusters as well as planetary nebulas. Appreciate your hard work.