Dobashi 2365, 2367,2371,2372.GGD 31 ,M29 ,DWB 57,DWB 67 (Cygnus)

Dark nebula Dobashi 2367-2365-2373-2381,TGU H466

DWB 67 -- HII (ionized) ; DWB 57 -- HII (ionized) region

DR 9 -- HII (ionized)

GGD 31 -- Herbig-Haro Object

M 29 -- Open (galactic) Cluster

Most of the atlas and catalog mainly trace relatively dense regions in dark clouds revealing a number of dense cloud cores leading to star formation, while those presented by Dobashi et al. (2005) based on the optical database are more suited to trace less dense regions and to reveal the global extents of dark cloud.

Despite its impressive appearance, similar to a tiny Pleiades, the cluster M29 (NGC 6913) is a difficult object to understand. A glance at a deep exposure in blue or red filters shows that it is located in a small more transparent bay of a huge system of dark clouds known as the Great Cygnus Rift. Most prominent in the cluster are seven stars with V magnitudes 8.6–10.2

It seems that our investigation has solved the longstanding problem of the distance and age of the cluster M29. The main reason preventing determination of the cluster distance earlier is related to insufficient accuracy of the luminosity classifications of its brightest stars.The M29 cluster is usually considered to be a member of the Cyg OB1 association, along with the clusters IC 4996, Berkeley 86, and Berkeley 87; see the recent review by Reipurth & Schneider (2008). Other than the clusters, the association contains tens of O–B3 stars and cooler supergiants scattered in an area of 4° × 3 (Humphreys 1978; Garmany & Stencel 1992). The distance to this association is still controversial but is usually considered to be 1.3–1.5?kpc. The distance to the cluster M29 determined in this investigation is close to the largest of these distances.The distances to the clouds of the Great Cygnus Rift are estimated to be in the range of 700–900 pc.

As a bonus.. the Herbig-Haro object GGD 31 can be seen close to the center of the image.Also the diffuse ionized HII areas DWB 57,DWB 67.