NGC 869 And 884: Two Open Clusters in a Cloud (Alex Woronow)

NGC 869 And 884: Two Open Clusters in a Cloud

NGC 869 And 884: Two Open Clusters in a Cloud

OTA: SkyRover 130
Camera: ZWO ASI6200MM Pro
Observatory: Insight Observatory
Date of Capture: Dec 23
Date of Processing: May 24

Exposures Used:
R: 10 x 300 sec
G: 12 x "
B: 11 x "
L: 34 x "
H: 14 x 900 sec
Total Exposure time: 9 hours
Image Width: 2d 51'

Processing Tools:
1.   Commercial: PixInsight, Topaz, Radiant Photo, 3DLUT Creator, PhotoDirector
2.   Pixinsight Addons: NoiseXTerminator, BlurXTerminator, StarXTerminator
3.   My Scripts: NB_Assistant, AC_Restar, Subframe Weighting Tool (Excel w/ J. Hunt), ColorTweaker

Target Description:
This image certainly is a star-rick FOV: Over 100,000 stars were recognized by the Color Calibration tool in PI. Among that plethora of stars are two open clusters (NGC 869 and NGC 884) lying near one another in space-time coordinates. Both are about 7500 ly away and about 14B years old. They are traveling together, too: both are approaching the earth at about 38-39km/s. Each cluster displays over 300 young, blue O- and B-type stars. (Wikipedia)

Processing Description:
The background has a faint Ha nebula, and the faint reflection nebula is superimposed on it. Bringing out the tinge of those nebulae diminished the impact of the two clusters. Their presence is best seen in a simple grayscale image. Image B is a grayscale image made from the color image, with some smaller stars removed and the contrast adjusted.

Alex Woronow

Final
Original
B

B

Title: BW...may provide a better view of the clusters(?)

Uploaded: ...

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Status	Basic failed
Started	...
Astrometry.net job	9797820
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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