Arp 319. Stephan's Quintet Data Fusion. JWST, Hubble, and personal telescope. (Benoit Blanco)

Arp 319. Stephan's Quintet Data Fusion. JWST, Hubble, and personal telescope.

This is a big project for me. I tried a lot of ways to merge different datasets. JWST, Hubble and an own remote telescope.

The idea is to use JWST resolving power, Hubble details and to have real RGB colors. Of course resolutions and PSF are very different and that was the main challenge. I'm still in the learning phase with JWST data that shows a lot of banding noise, weird PSFs and some stretch that avoid easy registration with other datasets.

Processing sequence of Hubble and JWST SuperStack
f438w starmask to protect stars / LAcosmic to remove cosmic particules
Star Align f814w (Hubble) on f2770w (JWST). Rejection of f900w from JWST and f1400w from Hubble.
Star alignment of all filters using distortion correction and high RANSAC tolerance. Manual dynamic alignment for rejected filters.
Superstack of all filters using the Robust Chauvenet Rejection method.

Processing sequence of Hubble color calibrated
Mure denoise for each Hubble filter
Red channel 0.6*f814w + 0.2*f665w + 0.2*f1500w
Green Channel 0.2*f665w + 0.8*f606w
Blue Channel 0.8*f438w + 0.2*f606w
RGB, DBE, Chrominance, PCC, linear fit with RCOS, Masked Stretch, Curves.

Processing sequence RCOS 14'
See my post from 2019 for the acquisition details. Batch PreProcessing; Luminance Mure Denoise; RGB; DBE; chrominance; PCC; MaskedStretch; Deconvolution; LRGB; Local histogram; Star mask; Curves; Camera Raw in photoshop cc, cosmetics, Starnet 2; dynamic alignement with « RGB_Hubble »

Final Fusion
Registrations of Superstack, Hubble color calibrated and RCOS Starless. Cosmetics corrections of Hubble color calibrated image using affinity photo on ipad (16bit TIFF)
LRGB with Superstack as Luminance, Hubble color calibrated as RGB.
Color mixing of RCOS Starless with LRGB.

Final
Original
C
D
E

C

Title: Hubble calibrated RGB

Uploaded: ...

D

Title: SuperStack

Uploaded: ...

E

Title: RCOS 14' Starless

Uploaded: ...

THE ARP ATLAS OF PECULIAR GALAXIES Through Modern Telescopes And Processing

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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Status	Advanced success
Started	...
Astrometry.net job	8531801
PixInsight job	E9TQPHHINLCFASKDKBCWR9ZBLOIW7YDC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h35m59s.999
RA (top/left)	22h36m11s.878
RA (top/right)	22h36m11s.893
RA (bottom/right)	22h35m47s.468
RA (bottom/left)	22h35m47s.474

Dec (center)	+33°57′43″.85
Dec (top/left)	+33°55′31″.30
Dec (top/right)	+33°59′56″.65
Dec (bottom/right)	+33°59′56″.59
Dec (bottom/left)	+33°55′30″.97

Image Index:

Contribution Index (beta):