NGC 6888(Crescent Nebula) HOO + RGB stars (Jian Yuan Peng)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: Crescent Nebula · NGC 6888

NGC 6888(Crescent Nebula) HOO + RGB stars, Jian Yuan Peng

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NGC 6888(Crescent Nebula) HOO + RGB stars

Powered byPixInsight

NGC 6888(Crescent Nebula) HOO + RGB stars

Crescent Nebula (a.k.a NGC6888) HOO+RGB stars

This Crescent Nebula is an emission nebula located in the constellation Cygnus about 5000 light-years away from Earth. This nebula about 25 light-years crossing is a cosmic bubble that was created by the fast stellar wind colliding with the slowing and energizing wind ejected by a Wolf-Rayet (WR 136) star at about 250,000 ~ 400,000 years ago. The WR 136 is estimated to be around 4.7 million years old and is 600,000 times brighter than the Sun, 21 times more massive than Sun, and 5.1 times larger than Sun. Its appearance looks like the crescent, or a Euro sign(€).

This is a Bi-Color mapping image by following PixelMath

R=ha

G=((oiii*ha)^~(oiii*ha))*ha + ~((oiii*ha)^~(oiii*ha))*oiii

B=oiii

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Technical details:

Telescope: Celestron Edge HD11 + Reducer 0.7x

Mount: AP Mach2GTO

Imaging cameras: ZWO ASI2600MM Pro

Software: PHD2, PixInsight, Lightroom 6.4, Sequence Generator Pro, Photoshop CS6

Location: Palo Alto, California, USA

PhotometricColorCalibration data (pre-corp):

Resolution ............... 0.396 arcsec/px

Rotation ................. 74.922 deg

Reference system ......... ICRS

Observation start time ... 2021-06-15 06:40:58 UTC

Observation end time ..... 2021-07-10 10:33:02 UTC

Focal distance ........... 1959.91 mm

Pixel size ............... 3.76 um

Field of view ............ 38' 15.1" x 25' 41.7"

Image center ............. RA: 20 12 06.507 Dec: +38 21 17.45

Astrodon 50mm Unmounted 3nm Narrowband Ha, SII, OIII filters

Blue 39x120" 1.3 Hour Bin1x1

Green 39x60" 1.3 Hour Bin1x1

Red 45x60" 1.5 Hour Bin1x1

Ha 55x1200" 18.3 Hours Bin1x1

OIII 45x1200" 15.9 Hours Bin1x1

Light Polluted skies
SF Bay Area Imagers
Schmidt-Cassegrain Telescope (SCT) Imagers
Images of Taiwan
Narrowband imaging

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	4734415
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 6888(Crescent Nebula) HOO + RGB stars

NGC 6888(Crescent Nebula) HOO + RGB stars

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NGC 6888(Crescent Nebula) HOO + RGB stars

NGC 6888(Crescent Nebula) HOO + RGB stars

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