IC5146, Cocoon Nebula

7d2b34b3222de0a0fbdedd1267fe0983.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Copyright Jose Luis Ricote
IC 5146 (also Caldwell 19Sh 2-125, and the Cocoon Nebula) is a reflection/emission nebula and Caldwell object in the constellation Cygnus. The NGC description refers to IC 5146 as a cluster of 9.5 mag stars involved in a bright and dark nebula. The cluster is also known as Collinder 470. It shines at magnitude +10.0/+9.3/+7.2. Its celestial coordinates are RA 21h 53.5m, dec+47° 16′. It is located near the naked-eye star Pi Cygni, the open cluster NGC 7209 in Lacerta, and the bright open clusterM39. The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago; the nebula is about 12 arcmins across, which is equivalent to a span of 15 light years. When viewing IC 5146, dark nebula Barnard 168 (B168) is an inseparable part of the experience, forming a dark lane that surrounds the cluster and projects westward forming the appearance of a trail behind the Cocoon.

Imaging telescopes or lenses: Takahashi TSA-102
Imaging cameras: Atik 383L+ mono
Mounts: SkyWatcher NEQ6 pro II
Guiding telescopes or lenses: EZG60
Guiding cameras: QHYCCD QHY5 Mono
Focal reducers: Takahashi TOA-35
Software: Pleiades Astrophoto, S.L. PixInsinght 1.8 RC7
Filters: Baader Planetarium G 2″, Baader Planetarium R 2″, Baader Planetarium B 2″
Dates: July 29, 2014
Locations: Pantano
Baader Planetarium B 2″: 11×600″ bin 1×1
Baader Planetarium G 2″: 11×600″ bin 1×1
Baader Planetarium R 2″: 11×600″ bin 1×1
Integration: 5.5 hours

Author: Jose Luis Ricote
AstroPhotography of the day by SPONLI 01 Sep 2014