Double Cluster in Perseus meets Heart & Soul Nebula (Steve Ludwig)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 10 Per · 11 Per · 15 eta Per · 5 Per · 7 chi Per · 8 Per · 9 i Per · B201 · Double cluster · IC 1795 · IC 1805 · IC 1824 · IC 1831 · IC 1848 · Miram · Misam · NGC 1027 · NGC 869 · NGC 884 · NGC 896 · NGC 957 · PK138+04.1 · Sh2-190 · Sh2-191 · Sh2-192 · Sh2-193 · Sh2-194 · Sh2-195 · Sh2-196 · Sh2-197 · And 11 more.

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Double Cluster in Perseus meets Heart & Soul Nebula

Powered byPixInsight

Double Cluster in Perseus meets Heart & Soul Nebula

Equipment

- Nikon D3300 (unmodified)

- Samyang 135mm f2 @ f2

- Skywatcher Star Adventurer Pro Pack

- no-name tripod

Acquisition

- 77 lights x 120 s = 2 h 34 min total exposure time

- no dark, flat, bias frames

- no filters

- ISO 200

- Bortle 4 zone

Processing

-> lights stacked in DSS

-> median kappa sigma clipping method

-> unmodified TIF opened in PixInsight

-> STF stretch

-> dynamic crop

-> dynamic background extraction

-> background neutralization

-> color calibration

-> use of starnet++ to separate background from stars

background

-> local histogram equalization to increase background contrast

-> SCNR green to remove green color and to improve color noise

-> red channel extraction

-> range selection to create a mask containing the heart and soul nebula

-> curves transformation to increase saturation of heart and soul nebula

-> mask inversion

-> curves transformation to reduce saturation of remaining background (color noise reduction/removal)

-> ACDNR to reduce noise

stars

-> SCNR green to remove green color

-> invert image

-> SCNR green to remove purple (now green) star fringes

-> invert image

-> curves transformation to increase saturation

-> pixel math to recombine stars and background

-> final histogram/curves transformation

-> saved as jpg

Original
Final
B

B

Description: In the new revision I removed purple star fringes, removed most of the color noise in the background and revealed a bit more of the background dust.

Uploaded: ...

/r/astrophotography
Sky-Watcher Star Adventurer
Camera Lens Astrophotography
PixInsight Addicts

Deep Space Objects

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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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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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	Advanced success
Started	...
Astrometry.net job	3934809
PixInsight job	7N1UIWOHORFQAJOSJ9VCWBZSN339EFKW
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h37m02s.65
RA (top/left)	02h53m28s.54
RA (top/right)	03h16m12s.66
RA (bottom/right)	02h13m53s.36
RA (bottom/left)	02h06m54s.61

Dec (center)	+59°39′07″.6
Dec (top/left)	+53°53′12″.1
Dec (top/right)	+63°45′27″.5
Dec (bottom/right)	+65°14′06″.10
Dec (bottom/left)	+54°58′53″.7

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Contribution Index (beta):

Double Cluster in Perseus meets Heart & Soul Nebula

Double Cluster in Perseus meets Heart & Soul Nebula

Equipment

Acquisition details

Description

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Image Index:

Contribution Index (beta):

Double Cluster in Perseus meets Heart & Soul Nebula

Double Cluster in Perseus meets Heart & Soul Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

In these collections

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