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IC 5146The Cocoon Nebula - HaLRGB
Copyright: Bruce Braunstein
Imaging Telescopes Or Lenses:
Takahashi FSQ-106EDX4
Imaging Cameras:
QHYCCD QHY268 M
Mount:
Orion Atlas Pro AZ/EQ-G
Filters:
Astrodon Gen2 E-series Tru-Balance Blue 36mm · Astrodon Gen2 E-series Tru-Balance Green 36mm · Astrodon Gen2 E-series Tru-Balance Lum 36mm · Astrodon Gen2 E-series Tru-Balance Red 36mm · Astrodon H-alpha 3nm 36 mm
Accessories:
MeLE Quieter2 Mini PC · MoonLite NiteCrawler 3.5" · Pegasus Astro Powerbox Micro × · QHYCCD QHYCFW3-M · QHYCCD QHYOAG-M
Software:
Bill Blanshan Bill's Color Mask Tools · Bill Blanshan Star reduction methods · Open PHD Guiding Project PHD2 · Pleiades Astrophoto PixInsight · ProDigital Software StarSpikes Pro · Russell Croman Astrophotography BlurXTerminator · Russell Croman Astrophotography NoiseXTerminator · Russell Croman Astrophotography StarXTerminator · Serif Affinity Photo · SetiAstro Find Background · SetiAstro Star Stretch v2.1 · SetiAstro Statistical Stretch · Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)
Guiding Telescopes Or Lenses: Takahashi FSQ-106EDX4 ×
Guiding Cameras: ZWO ASI290MM Mini
Acquisition details
Dates:
June 28 - July 1, 2024
July 3 - 5, 2024
Frames:
Astrodon Gen2 E-Series Tru-Balance Green 36 mm: 54×300″(4h 30′) (gain: 30.00) 0°C
Astrodon Gen2 E-series Tru-Balance Blue 36mm: 49×300″(4h 5′) (gain: 30.00) 0°C
Astrodon Gen2 E-series Tru-Balance Lum 36mm: 100×300″(8h 20′) (gain: 30.00) 0°C
Astrodon Gen2 E-series Tru-Balance Red 36mm: 51×300″(4h 15′) (gain: 30.00) 0°C
Astrodon H-alpha 3nm 36 mm: 105×600″(17h 30′) (gain: 56.00) 0°C
Integration:
38h 40′
Darks:
20
Flats:
20
Bias:
200
Avg. Moon age:
25.34 days
Avg. Moon phase:
23.17%
Bortle Dark-Sky Scale: 2.75
RA center: 21h50m20s.159
DEC center: +47°27′50″.95
Pixel scale: 0.730 arcsec/pixel
Orientation: 40.124 degrees
Field radius: 1.492 degrees
Locations: Golden State Star Party - Frosty Acres Ranch, Adin, California, United States; Backyard Reno, NV, United States
From Wikipedia, the free encyclopedia
IC 5146 Reflection nebula
emission nebula
Optical image of IC 5146
Observation data: J2000 epoch
Right ascension 21h 53m 28.7s
Declination +47° 16′ 01″
Distance 2500±100[1] ly (780±30 pc)
Apparent magnitude (V) +7.2
Apparent dimensions (V) 12′
Constellation Cygnus
Physical characteristics
Radius 7.5 ly
Designations Cocoon Nebula, Caldwell 19, Sh 2-125, Cr 470
See also: Lists of nebula
IC 5146 (also Caldwell 19, Sh 2-125, Barnard 168, and the Cocoon Nebula) is a reflection[2]/emission[3] 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.[4] It shines at magnitude +10.0[5]/+9.3[3]/+7.2.[6] 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 cluster M39.[2][5] The cluster is about 4,000 ly away, and the central star that lights it formed about 100,000 years ago;[7] the nebula is about 12 arcmins across, which is equivalent to a span of 15 light years.[6]
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.