Brocchi's Cluster: Thousands of Stars Including a Few Young Ones (Alex Woronow)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: NGC 6793 · NGC 6802 · The star 1 Sge · The star 1 Vul · The star 4 Vul · The star 5 Vul · The star 7 Vul

Brocchi's Cluster: Thousands of Stars Including a Few Young Ones

Brocchi's Cluster: Thousands of Stars Including a Few Young Ones

OTA: FSQ106 f/3.6
Camera: QHY 600
Observatory: Telescope Live
Date of Capture: Apr 23
Date of Processing: Mar 24

Exposures Used:
R: 15 x 300 sec
G: 13 x "
B: 15 x "
Total Exposure time: 3.6 hours
Image Width: 5deg

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

Target Description:
The bright blue stars in this image constitute "Brocchi's Cluster." According to Wikipedia, this group of 10 bright blue stars are not gravitationally associated, nor are they all moving at the same rate in the same direction. They are not an actual "cluster," just an asterism. BTW, at various stages in processing, PixInsight counted well over 100,000 stars in this image.

Right in the center of this image is a yellow-orange star-like object. That is Sh2-83. (See the annotated image and Image D.) This small nebula appears to be an active star-forming area. It is mostly obscured behind the pervasive foreground nebula dominating the main image.

Processing Description:
This image was processed at half resolution. Although luminance data were available, they served only to distort the star point-spread function when combined with the RGB and were not used.

Alex Woronow

Final
Original
C
D

C

Title: Annotations & Plate Solution

Uploaded: ...

D

Title: Sh2-83

Uploaded: ...

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Status	Advanced failed
Started	...
Astrometry.net job	9716511
PixInsight job	VAHAQMT63NFKH3ZY8QAEY0VLCETPFVQJ
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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Brocchi's Cluster: Thousands of Stars Including a Few Young Ones

Brocchi's Cluster: Thousands of Stars Including a Few Young Ones

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Brocchi's Cluster: Thousands of Stars Including a Few Young Ones

Brocchi's Cluster: Thousands of Stars Including a Few Young Ones

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D

Sky plot

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