C/2020 F3 Neowise 08/08/2020 ZTF data

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This incredible beautiful set of data from IRSA / ZTF retrieval system https://irsa.ipac.caltech.edu/frontpage/ allows me to a second post-production attempt focused about Neowise comet of 2020.

I still cannot get rid of comet registration alignment by PixInSight, thus just played a hand allineation or R(zr) G(zg) and B(zi) channels in photohop of comet starless image, and then adding stars as new layer in “screen” blending mode.
After some research about Palomar 48 inches Samuel Oschin Schmidt telescope and ZTF camera I found here : https://www.ztf.caltech.edu/ztf-camera.html

and especially here : https://iopscience.iop.org/article/10.1088/1538-3873/ab4ca2/pdf
https://doi.org/10.1088/1538-3873/ab4ca2  ]
all data necessary for letting PixInsight plate solving and annotates final image.

Apart of aesthetic results, what is important is that if pixinsight works in annotation after platesolving, I hypothesize it could works also in comet registration after a proper platesolving of single channels masterframe; I’m going to try asap.

Barnard 33 and half Barnard’s Ori loop

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Horsehead, M42 Orion nebula region and half Orion loop

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

JWST NIRCam starless and luminance approach for postprocessing

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NGC2070 Tarantula Nebula in Dorado, JWST NIRCAM raw data

After processing James Webb Space Telescope raw calibrated .fit data focused about NGC2070 by Photoshop screen colorized blending layers, with colours assigned according to NIRCAM filters guideline (cfr.: https://jwst-docs.stsci.edu/jwst-near-infrared-camera ) I was able to obtain this preliminary result.

Integration of NIRCAM f090W, f187N, f200W, f335M and f444W filters

According to spectrum values indicated by NIRCAM filters guidelines I decided a different approach for postproduction, considering the lowest nm values as “blue” colour band, the middle nm values as green, and the highest nm as red channel for an RGB combination.

Using Pixelmath I thus combined in PixInSight f090W and f187N masters creating my blue channel, f200W and f335N as the green channel, and f444W master for red channel.

NIRCAM f090W + f187N filter integration (PixInSight > Pixelmath)
NIRCAM f200W + f335N filter integration (PixInSight > Pixelmath)
NIRCAM f444W filter

Being NIRCAM data results of very narrowband recordings, I approach such masters as a peculiar SHO integration, and decided to attempt a starless integration for nebula details and colours work, and final recomposition of starry image using star luminance layer.

Starless version of each master I obtained by PixInSight > Starnet2. Each master I then stretched and export as .tiff in Photoshop for contrast adjustement, star residual removing and hot pixels fixing.

Starless NIRCAM f090W + f187N filter integration
Starless NIRCAM f200W + f335N filter integration
Starless NIRCAM f444W filter

In Photoshop I imported each master into pertinent RGB channel. Then I provide to contrast, saturation and Brightness adjustement layers and fix other pixels problem emerged from channels combination.

Starless LRGB integration where: L=f444W R=f444W G=f200W+f335N B=f090W+f187M JWST NIRCAM NGC2070

Starry NIRCAM f444W filter master as luminance was finally imported as upper layer in luminosity blending mode, while starless f444W master for starless version.

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

SH2-171 region in SHO Palette

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SH2-171 region in SHO Palette

Astrobin: https://www.astrobin.com/i4juxi/

Astrometry: https://nova.astrometry.net/user_images/7044397#annotated

Strumentazione

Telescopi O Obiettivi Di Acquisizione: William Optics Redcat 51

Camere Di Acquisizione: ZWO ASI1600MM Pro

Montature: Sky-Watcher EQM-35 

Filtri: Astronomik H-alpha CCD 6nm 1.25″ · Astronomik OIII CCD 6nm 1.25″ · Astronomik SII CCD 6nm 1.25″

Accessori: ZWO ASIAIR Pro · ZWO EAF · ZWO EFW 8 x 1.25″ / 31mm

Software: Adobe Photoshop · Pleiades Astrophoto PixInsight

Telescopi o Obiettivi Di Guida: QHYCCD Mini Guide Scope

Camere Di Guida: ZWO ASI120MM Mini

M81 M82 filed mosaic and annotation

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Astrobin: https://www.astrobin.com/y6ao2p/

Astrometry: http://nova.astrometry.net/user_images/4612086#annotated

Annotated mosaic frame (by PixInSight)

M81 and M82 mosaic field at F360 (William Optics Zenithstar 61 / EOS550d)
PixInSight platesolving and annotation of Galaxies and DSO.
Drizzle data integration of many frames at ISO400, 600sec with CLS (Svbony) and UHC (Optolong) 2″ filter.

M3 / NGC5272

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Telescopi o obiettivi di acquisizione: Williams Optics Zenithstar 61 APO
Camere di acquisizione: Canon EOS 550D Full Spectrum ir cut
Montature: Skywatcher EQ35M
Telescopi o obiettivi di guida: SVBONY SV106 60mm Guidescope
Camere di guida: QHYCCD QHY5L-II-C
Riduttori di focale: William Optics Adjustable Flattener Flat61
Software: Adobe Lightroom  ·  Astroberry  ·  Pleiades Astrophoto PinInsight  ·  KStars Ekos/INDI, Astroberry OS  ·  Photoshop  ·  Stark Labs Phd2
Filtri: SVBONY CLS 2”
Accessorio: SVBONY Filter Wheel 2″

Date:18 Gennaio 2021
Pose:
SVBONY CLS 2”: 22×30″ ISO3200
SVBONY CLS 2”: 7×600″ ISO400 bin 1×1
Integrazione: 1.4 ore
Dark: ~17
Flat: ~17
Dark dei flat: ~17
Bias: ~17
Giorno lunare medio: 5.24 giorni
Fase lunare media: 27.97%

Astrobin: https://www.astrobin.com/4gp531/

Astrometry: http://nova.astrometry.net/user_images/4339264#annotated

Drizzle data integration by PixInSight of
7 lights ISO400, 600sec, CLS 2″ filter by Svbony, dark, flat and BIAS;
22 lights ISO3200, 30sec, CLS Svbony 2″ filter, dark, flat and BIAS.

M1 Crab Nebula

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Telescopi o obiettivi di acquisizione: Williams Optics Zenithstar 61 APO
Camere di acquisizione: Canon EOS 550D Full Spectrum ir cut
Montature: Skywatcher EQ35M
Telescopi o obiettivi di guida: SVBONY SV106 60mm Guidescope
Camere di guida: QHYCCD QHY5L-II-C
Riduttori di focale: William Optics Adjustable Flattener Flat61
Software: Adobe Lightroom  ·  Astroberry  ·  Pleiades Astrophoto PinInsight  ·  KStars Ekos/INDI, Astroberry OS  ·  Photoshop  ·  Stark Labs Phd2
Filtri: SVBONY CLS 2”

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

Astrometry (with Oiii adding): http://nova.astrometry.net/user_images/4329679#annotated

Drizzle data integration by PixInSight of 11 frames, ISO800 180sec and CLS 2″ filter by Svbony.
Canon EOS550d full spectrum IR cut on William Optics Zenithstar61 and Skywatcher EQM35 Pro.
Everything guided by Astroberry server on Raspberry Pi4b [8Gb] with Kstars and PHD2.
Postprod.: Photoshop and Lightroom

NGC1545, NGC1528

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Telescopi o obiettivi di acquisizione: Williams Optics Zenithstar 61 APO
Camere di acquisizione: Canon EOS 550D Full Spectrum ir cut
Montature: Skywatcher EQ35M
Telescopi o obiettivi di guida: SVBONY SV106 60mm Guidescope
Riduttori di focale: William Optics Adjustable Flattener Flat61
Software: Adobe Lightroom  ·  Astroberry  ·  Pleiades Astrophoto PinInsight  ·  KStars Ekos/INDI, Astroberry OS  ·  Photoshop  ·  Stark Labs Phd2
Filtri: Optolong UHC 2″
Accessorio: SVBONY Filter Wheel 2″

Astrobin: https://www.astrobin.com/v1uhoq/

Astrometry: http://nova.astrometry.net/user_images/4322115#annotated

Drizzle data integration of 2 frames-set, both in UHC 2″ filter by Optolong:
15 lights 23rd 11 2020 and 6 lights on 24th.
Postprod.: Photoshop and Lightroom

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