IC348 SHO Dynamic Narrowband Combination

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Astrobin: https://www.astrobin.com/jn7jdt/

Astrometry: https://nova.astrometry.net/user_images/7703840#annotated

According to Andre B. [ https://telescope.live/blog/dynamic-narrowband-combinations-pixelmath ] who in turns referred to The Coldest Night [ https://thecoldestnights.com/2020/06/pixinsight-dynamic-narrowband-combinations-with-pixelmath/ ] narrowband channels integration and combination is subjective and could not coincide with a simple channel combination of Sii Ha and Oiii masters within an RGB implementation, as also suggested by Edoardo Luca Radice during CEDIC 2019; cfr. “Creating near true color images for nebulae from narrow band data using PixInsight” [ http://www.arciereceleste.it/tutorial-pixinsight/cat-tutorial-eng/110-cedic19-art?fbclid=IwAR0ybmyfZCC8G2ykfgDavTpBY7tEjE_DhJOAeT_QM5gZpKSvAfSmiNOoznw ]

In my approach and attempt I used PixInSight > Pixelmath formula

R = (Oiii^~Oiii)Sii + ~(Oiii^~Oiii)Ha
G = ((OiiiHa)^~(OiiiHa))Ha + ~((OiiiHa)^~(OiiiHa))Oiii
B = Oiii

to generate IC348 integration and postproduction.

Art, Asiair Plus, AsiAir Pro, Astronomic Ha 1,25" filter, Astronomic Oiii 1,25" filter, Astronomic Sii 1,25" filter, Astrophotography, Deep Sky, Dynamic Narrowband Combination, IC348, Narrowband, Sky-Watcher EQM-35 Pro Synscan GOTO, William Optics Redcat 51, William Optics v1.5 RedCat 51 APO, Xiuart, ZWO EFW 8x1,25"

Simeis 147 Sh2-240 in SHO palette

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Simeis 147 in SHO palette.

Astrobin: https://www.astrobin.com/5vg3w9/

Astrometry: https://nova.astrometry.net/user_images/7641616#annotated

Sh2-240 annotation by PixInSight

PixInSight workflow to get starless and star separated masters by Starnet2 from SHO channel combination integration, this latter used as luminance level; files not stretched hereby available:

Sh2-240 Starless: https://www.dropbox.com/s/40ijqgs488vv3bs/SHO_Gain139_DBEspccDECONVexdenoiseSTARLESS.xisf

Sh2-240 Stars: https://www.dropbox.com/s/mypn8s4xao7piix/SHO_Gain139_DBEspccDECONVexdenoiseSTARLESSstars.xisf

Sh2-240 SHO integration (ABE, SPCC, Deconvolutio, DENOISE) : https://www.dropbox.com/s/8dp76br7d9kiw92/SHO_Gain139_DBEspccDECONVexdenoise.xisf

Photoshop postproduction, layer .psd master available here: https://www.dropbox.com/s/zksyulh7yxzd0eq/Sh2-240-SHO_Gain139_DBEspccDECONVexdenoiseSTARLESS%26stars%26luminance-stretchedPP.psd

Spectrophotometric Color Calibration White balance values, by PixInSight

Art, Asiair Plus, AsiAir Pro, Astroberry Server, Astronomic Ha 1,25" filter, Astronomic Oiii 1,25" filter, Astronomic Sii 1,25" filter, Astronomy, Astrophotography, Deep Sky, Deepsky, Narrowband, Photoshop, PixInSight, Sh2-240, Sharpless 2-240, SHO, SHO Palette, Simeis 147, Sky-Watcher EQM-35 Pro Synscan GOTO, William Optics Redcat 51, William Optics v1.5 RedCat 51 APO, Xiuart, ZWO ASI120mm Mini, ZWO ASI1600mm Pro, ZWO EFW 8x1,25"

C/2022 E3 ZTF 28, 29/01/2023

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C/2022 E3 ZTF, night between 28 and 29/01/2023. 120″ and 60″ subframes

Astrobin:

Astrometry: https://nova.astrometry.net/user_images/7357487#annotated

Starless comet standalone integration: PixInSight, Starnet
White balance parameters by PixInSight > Spectrophotometric Color Calibration
Art, ASI1600mm-Pro, Asiair Plus, AsiAir Pro, Astroberry Server, Astronomic B 1,25" filter, Astronomic G 1,25" filter, Astronomic Luminance 1,25" filter, Astronomic R 1,25" filter, Astronomy, Astrophotography, C-2022 E3 ZTF, comet, Deep Sky, Deepsky, Kstars, PixInSight, Sky-Watcher EQM-35 Pro Synscan GOTO, William Optics Redcat 51, William Optics v1.5 RedCat 51 APO, Xiuart, ZWO ASI120mm Mini, ZWO ASI1600mm Pro, ZWO EFW 8x1,25"

C-2022 E3 ZTF – 10/01/2023

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C-2022 E3 ZTF – 10/01/2023

Astrobin: https://www.astrobin.com/4j6mnr/

Astrometry: https://nova.astrometry.net/user_images/7161626#annotated

Telescopi O Obiettivi Di AcquisizioneWilliam Optics Redcat 51Camere Di AcquisizioneZWO ASI1600MM ProMontatureSky-Watcher EQM-35  ×FiltriAstronomik L-1 Luminance UV/IR Block 1.25″ · Astronomik Type 2c Blue 1.25″ · Astronomik Type 2c Green 1.25″ · Astronomik Type 2c Red 1.25″AccessoriDeepSkyDad Flap Panel (FP1) · ZWO ASIAIR Plus · ZWO EAF · ZWO EFW 8 x 1.25″ / 31mmSoftwareAdobe Photoshop · Pleiades Astrophoto PixInsight

 Dettagli d’acquisizione

Date:10 Gennaio 2023Pose:

Astronomik L-1 Luminance UV/IR Block 1.25″: 10×60″(10′) (gain: 173.00) -20°C bin 1×1
Astronomik Type 2c Blue 1.25″: 10×60″(10′) (gain: 173.00) -20°C bin 1×1
Astronomik Type 2c Green 1.25″: 10×60″(10′) (gain: 173.00) -20°C bin 1×1
Astronomik Type 2c Red 1.25″: 10×60″(10′) (gain: 173.00) -20°C bin 1×1Integrazione:40′Dark:33Flat:33Dark dei flat:33Giorno lunare medio:17.92 giorniFase lunare media:89.18%Scala del Cielo Scuro Bortle:6.00

Risoluzione: 3451×4585

Dimenzione file: 90,6 MB

Luoghi: Home (balcony), Livorno, Livorno, Italia

Origine dei dati: Giardino

 Descrizione

Comet C-2022 E3 ZTF from Livorno, Bortle 6 degree suburban sky.
Rare minutes of clear sky let me take about 10 subrafems of 60″ in LRGB between 4 and 6 a.m..
Very hard set to combine due to comet alignment shifting parameters.
Postproduction PixInSight, StarXtermintator, Adobe Photoshop.
Link here to raw .fits file of comet and star integration by Pixelmath.

Art, Asiair Plus, Astroberry, Astronomic B 1,25" filter, Astronomic G 1,25" filter, Astronomic Luminance 1,25" filter, Astronomic R 1,25" filter, Astronomy, Astrophotography, C-2022 E3 ZTF, comet, Deepsky, Filter, Sky-Watcher EQM-35 Pro Synscan GOTO, William Optics Redcat 51, William Optics v1.5 RedCat 51 APO, Xiuart, ZWO ASI120mm Mini, ZWO ASI1600mm Pro, ZWO EFW 8x1,25"