NGC 6729

{{Short description|Reflection nebula in the constellation Corona Australis}}

{{Infobox nebula

| name = NGC 6729

| image = R Coronae Australis region.jpg

| caption = NGC 6729 is the bright fan like nebula at the center of the image.

| type = reflection

| type2 = emission nebula

| epoch = J2000

| ra = {{RA|19|01|54.1}}{{cite web

|title = NGC/IC Project Database

|work = Results for NGC 6729

|url = http://www.ngcicproject.org/ngcicdb.asp

|access-date = 2010-12-09

|url-status = dead

|archive-url = https://web.archive.org/web/20120520010558/http://www.ngcicproject.org/ngcicdb.asp

|archive-date = 2012-05-20

}}

| dec = {{DEC|-36|57|12}}

| dist_ly =

| appmag_v =

| size_v = 2.5{{prime}} × 2.0{{prime}}{{cite web

| title = NASA/IPAC Extragalactic Database

| work = Results for NGC 6729

| url = http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+6729

| access-date = 2010-12-09

}}

| constellation = Corona Australis

| radius_ly =

| notes =

| names = Caldwell 68

}}

NGC 6729 (also known as Caldwell 68) is a reflection/emission nebula of the Corona Australis Molecular Cloud in the constellation Corona Australis. It was discovered by Johann Friedrich Julius Schmidt in 1861.

This fan-shaped nebula opens from the star R Coronae Australis toward the star T CrA to the south-east. R CrA is a pre-main-sequence star in the Corona Australis molecular complex, one of the closer star-forming regions of the galaxy at a distance of 130 pc. NGC 6729 is a variable nebula which shows irregular variations in brightness and in shape.Robert Burnham, Jr.: Burnham's Celestial Handbook, Volume 2: Chamaeleon through Orion, pages 695-696: NGC 6726-6727-6729 and R Coronae Australis

File:NGC 6729 map.png