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The asterism Collinder 399 – also known as Brocchi’s Cluster and Al Sufi’s Cluster

Collinder 399

Object Name: Collinder 399
Object Type: Asterism.
Constellation: Vulpecula
Acquisition Date: July 16, 2020
Location: Tierra del Sol, San Diego County, California
• Imaging Scope – Takahashi FSQ-106 EDX IV
• Imaging Camera – ZWO ASI1600MM-C with EFW2
• Filters – Baader 36mm unmounted red, green and blue filters
• Mount – Astro-Physics Mach2
Camera Control – Sequence Generator Pro
Acquisition Details:
• Imaging Camera – gain 76, offset 15 – cooled to -15
• Exposures – 45 x 120 seconds for each of the red, green and blue filters – total exposure time = 4.5 hours
PixInsight and Photoshop CC were used to process the images.
• PixInsight –
⁃ Image calibration, alignment and integration
⁃ HistogramTransformation for histogram adjustment
• Photoshop –
⁃ additional adjustments to histogram and color balance
Thanks for looking.  Click on the image below for a larger image.  Follow this link to my Astrobin page for this object to see a high resolution image.

Collinder 399
Collinder 399
Posted in CMOS Camera Image, Star Clusters

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