M33 The Triangulum Galaxy in HARGB (Ivan Raichev)

Celestial hemisphere: Northern · Constellation: Triangulum (Tri) · Contains: M 33 · NGC 598 · Triangulum Galaxy · Triangulum Pinwheel

M33 The Triangulum Galaxy in HARGB, Ivan Raichev

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M33 The Triangulum Galaxy in HARGB

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M33 The Triangulum Galaxy in HARGB

In the end of October I managed to collect some HA data with my Idas NBZ narrowband filter in order to add it to my already collected broadband data of M33.

I used the following processing steps:
- Integrated all the channels separately in PI - R, G, B and R from my narrowband data as HA.
- Dynamic cropped the data;
- extracted the Dynamic Background with one and the same model;
- used Deconvolution;
- then combined the R, G and B data and used Backgroundneutralization;
- then ColorCalibration;
- then PhotometricColorCalibration;
- then SCNR for green;

After that I extracted the Red from the calibrated image and used the following formula in Pixemlath in order to isolate only the HA data:
HA-(R-med(R))*0.15

Then I used the following formula in order to add the isolated HA data to the calibrated RGB image - again in Pixelmath:
R/K: $T+((HA_Isolated - Med(HA_Isolated)) * BoostFactor)
G: $T
B: $T
Symbols: BoostFactor=1.0

For my image here I used a BoostFactor of 2.

Then I used Backgroundneutralization again with a preview of dark space from the image in order to tame the red color in the background.

After that the processing was standard.

I like the result as the HA regions really stand out.

CS,
Ivan

Final
Original
B
C

B

Title: HA isolated data

Uploaded: ...

C

Title: RGB only data

Uploaded: ...

Celestron RASA
Astroimaging from Bulgaria
ZWO ASI 2600MC PRO
IDAS NBZ Dual Band Nebula Boost Filter

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Status	Basic success
Started	...
Astrometry.net job	6635888
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M33 The Triangulum Galaxy in HARGB

M33 The Triangulum Galaxy in HARGB

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M33 The Triangulum Galaxy in HARGB

M33 The Triangulum Galaxy in HARGB

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