Editing Delphinus (section)

===Deep-sky objects===
Its rich [[Milky Way]] star field means many modestly deep-sky objects. [[NGC 6891]] is a [[planetary nebula]] of magnitude 10.5; another is [[NGC 6905]] or the Blue Flash Nebula. The Blue Flash Nebula shows broad emission lines. The central star in NGC 6905 has a spectral type of WO2, meaning it is rich in oxygen.<ref name=GomezGonzalez>{{cite journal|doi=10.1093/mnras/stab3042|arxiv=2110.09551 |title=Planetary nebulae with Wolf–Rayet-type central stars – III. A detailed view of NGC 6905 and its central star|year=2022|last1=Gómez-González|first1=V M A.|last2=Rubio|first2=G.|last3=Toalá|first3=J. A.|last4=Guerrero|first4=M. A.|last5=Sabin|first5=L.|last6=Todt|first6=H.|last7=Gómez-Llanos|first7=V.|last8=Ramos-Larios|first8=G.|last9=Mayya|first9=Y. D.|journal=Monthly Notices of the Royal Astronomical Society|volume=509|pages=974–989|doi-access=free }}</ref> 

[[NGC 6934]] is a [[globular cluster]] of magnitude 9.75.  It is about 52,000 light-years away from the Solar System.<ref>{{cite journal
 | title=Orbits of Globular Clusters in the Outer Galaxy: NGC 7006
 | last1=Dinescu | first1=Dana I. | last2=Majewski | first2=Steven R.
 | last3=Girard | first3=Terrence M. | last4=Cudworth | first4=Kyle M.
 | display-authors=1 | journal=The Astronomical Journal
 | volume=122 | issue=4 | pages=1916–1927 | date=October 2001
 | arxiv=astro-ph/0106259 | bibcode=2001AJ....122.1916D 
 | doi=10.1086/323094 | s2cid=1232455 }}</ref> It is in the [[Shapley-Sawyer Concentration Class]] VIII<ref name=ShapleySawyer>{{citation
 | title=A Classification of Globular Clusters
 | last1=Shapley | first1=Harlow | last2=Sawyer | first2=Helen B.
 | journal=Harvard College Observatory Bulletin
 | volume=849 | issue=849 | pages=11–14 | date=August 1927
 | bibcode=1927BHarO.849...11S | postscript=. }}</ref> and is thought to share a common origin with another globular cluster in [[Boötes]].<ref name=apj670_1_363>{{citation
 | title=A 1.4 GHz Arecibo Survey for Pulsars in Globular Clusters
 | display-authors=1 | last1=Hessels | first1=J. W. T.
 | last2=Ransom | first2=S. M. | last3=Stairs | first3=I. H.
 | last4=Kaspi | first4=V. M. | last5=Freire | first5=P. C. C.
 | journal=The Astrophysical Journal
 | volume=670 | issue=1 | pages=363–378 | date=November 2007
 | bibcode=2007ApJ...670..363H  | arxiv=0707.1602
 | doi=10.1086/521780 | s2cid=16914232 | postscript=. }}</ref> It has an intermediate metallicity for a globular cluster,<ref name=Kaluzny2001>{{cite journal
 | title=Image-Subtraction Photometry of Variable Stars in the Field of the Globular Cluster NGC 6934
 | display-authors=1 | last1=Kaluzny | first1=J.
 | last2=Olech | first2=A. | last3=Stanek | first3=K. Z.
 | journal=The Astronomical Journal
 | volume=121 | issue=3 | pages=1533–1550 | date=March 2001
 | arxiv=astro-ph/0010303 | bibcode=2001AJ....121.1533K 
 | doi=10.1086/319411 | s2cid=14431121 }}</ref> but as of 2018 it has been poorly studied.<ref>{{cite journal
 | title=Metallicity Variations in the Type II Globular Cluster NGC 6934
 | last1=Marino | first1=A. F. | last2=Yong | first2=D.
 | last3=Milone | first3=A. P. | last4=Piotto | first4=G.
 | last5=Lundquist | first5=M. | last6=Bedin | first6=L. R.
 | last7=Chené | first7=A. -N. | last8=Da Costa | first8=G.
 | last9=Asplund | first9=M. | last10=Jerjen | first10=H.
 | display-authors=1 | journal=The Astrophysical Journal
 | volume=859 | issue=2 | id=81 | pages=20 | date=June 2018
 | arxiv=1804.04158 | bibcode=2018ApJ...859...81M 
 | doi=10.3847/1538-4357/aabdea | s2cid=119461759 | doi-access=free }}</ref> At a distance of about 137,000 light-years,<ref name=apj670_1_363 /> the globular cluster [[NGC 7006]] is at the outer reaches of the galaxy. It is also fairly dim at magnitude 11.5 and is in Class I.<ref name=ShapleySawyer />