Astrobin:
Reprocessing 2022 records focused about M42 region.
In this work there’s a main core in LRGB, background removed, SPColorCalibrated, Deconvoltued and denoised is then integrated and boosted by Ha and Oiii narrowband master (Bgremoved, Deconvoluted and denoised) with Ha applied to L and R channel, Oiii to Green and Blue.
Final starless and 0.65 stars pixelmath blended and Photoshop retouches.
Mosaic composition of Soul and Heart Nebula in SHO palette.
Astrobin:
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 12nm 1.25″ · Astronomik H-alpha CCD 6nm · Astronomik OIII CCD 12nm 1.25″ · Astronomik OIII CCD 6nm · Astronomik SII CCD 12nm 1.25″ · Astronomik SII CCD 6nm
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 GuidaZWO ASI120MM Mini
Date: 09 Settembre 2021 · 12 Settembre 2021 · 28 Ottobre 2021 · 01 Novembre 2021
Pose:
Astronomik H-alpha CCD 12nm 1.25″: 324×180″(16h 12′) (gain: 139.00) -20°C bin 1×1
Astronomik OIII CCD 12nm 1.25″: 481×180″(24h 3′) (gain: 139.00) -20°C bin 1×1
Astronomik SII CCD 12nm 1.25″: 309×180″(15h 27′) (gain: 139.00) -20°C bin 1×1
Integrazione: 55h 42′ Dark:33 Flat:33 Dark dei flat:33
Giorno lunare medio:14.04 giorni
Fase lunare media: 27.69%
Scala del Cielo Scuro Bortle: 6.00
Luoghi: Home (balcony), Livorno, Livorno, Italia; Livorno, Toscana, Italia
I found this work not so easy to be done, but I really stoked into.
Mostly made in PixInSight I played and LRGB and HOO separated integration, background removing, Spectrophotometric color calibration.
I then used Ha to enhace both L and R channel, while Oiii to integrate G and B channel.
Extracting starless / stars masters,
then is adding stars from LRGB color calibrated master into HaL HaR OiiiG OiiiB nebula master.
This is a very interesting subject.
The central star in this image is WR 40 which is located toward the constellation of Carina.
WR stands for Wolf Rayet, in honor of French astronomers Charles Wolf and Georges Rayet.
This Wolf Rayet star is thus about 100 times as massive as our, lives fast and dies young.
It is going quickly to exhaust its core hydrogen supply, moves on to fusing heavier core elements, and expands while ejecting it outer layers via high stellar winds at a speed of nearly 100 kilometers per second, and these outer layers have become the expanding oval-shaped nebula RCW 58.
Cfr. https://science.nasa.gov/stellar-wind-shaped-nebula-rcw-58
Telescope CH-1-CMOS Planewave CDK24
Camera QHY 600M
Location: El Sauce Observatory, Chile
Date of observation 27/04/2023
Filters L R G B H O
Processing in PixInSight, Photoshop
CreditsCredits: Telescoplive
Astrobin: https://www.astrobin.com/cgrplj/
Date:27 Aprile 2023 · 28 Aprile 2023Pose:
Astrodon Gen2 E-Series Tru-Balance Blue 50×50 mm: 5×240″(20′)
Astrodon Gen2 E-Series Tru-Balance Green 50×50 mm: 8×240″(32′)
Astrodon Gen2 E-Series Tru-Balance Lum 50×50 mm: 8×240″(32′)
Astrodon Gen2 E-Series Tru-Balance Red 50×50 mm: 8×240″(32′)
Astrodon H-alpha 3nm 50×50 mm: 14×300″(1h 10′)
Astrodon OIII 3nm 50×50 mm: 11×300″(55′)
Integrazione: 4h 1′
Giorno lunare medio: 7.48 giorni
Fase lunare media:51.02%
Astrobin:
SHO integration from Telescopelive CHI-1 CCD – Planewave CDK24 610/3962, Camera Proline FLI PL16083.
Starless and annotated version by PixInSight.
Framelist available here:
Astrobin: https://www.astrobin.com/e0kz45/
In this workflow I used Ha narrowband as integration for Luminance and Red channel, and Oiii narrowband master as integration for Green and Blue channel as according to Kayron Mercieca, cfr.: https://www.lightvortexastronomy.com/tutorial-combining-lrgb-with-narrowband.html
Approved subframes detailed list (PixInSight weighted) resumed gathered by filter, all by Astronomic, recorded between 28/10/2021 and 25/04/2023.
Ha: 226 x 180″ -20C: 141 gain 139, 85 gain 173
Oiii: 159 x 180″ -20C: 94 gain 139, 65 gain 173
L: 636 x 60″ -20C: 553 gain 139, 83 gain 173
G: 532 x 60″ -20C: 373 gain 139, 159 gain 173
B: 500 x 60″ -20C: 298 gain 139, 202 gain 173
R: 614 x 60″ -20C: 438 gain 139, 176 gain 173
Dark neblua LDN 1228, LRGB palette.
Raw data from Telescopelive Network, SPA-1-CCD – Takahashi FSQ-106ED (106 mm) F3.6 with Proline 16083; postproduction by PixInSight and Gimp.
Telescopi o obiettivi di acquisizione: William Optics RedCat 51 Petzval APO
Camere di acquisizione: ZWO ASI 1600MM-Cool Pro
Montature: Skywatcher EQ35M
Telescopi o obiettivi di guida: QHYCCD QHY Mini Guide Scope
Camere di guida: ZWO ASI 120MM Mini
Software: ZWO ASIair Pro · Pleiades Astrophoto PinInsight · Gimp
Filtri: Astronomik H alpha 12 nm 2 inch Astronomik · Astronomic SII 6nm 1.25 · astronomic Oiii 6nm
Accessorio: ZWO 8x 1.25″ Filter Wheel (EFW)
Date:11 Agosto 2021 , 12 Agosto 2021 , 14 Agosto 2021 , 15 Agosto 2021 , 17 Agosto 2021 , 18 Agosto 2021 , 19 Agosto 2021 , 29 Agosto 2021 , 30 Agosto 2021 , 31 Agosto 2021 , 01 Settembre 2021 , 05 Settembre 2021 , 06 Settembre 2021 , 07 Settembre 2021 , 08 Settembre 2021 , 09 Settembre 2021 , 10 Settembre 2021 , 11 Settembre 2021 , 12 Settembre 2021 , 13 Settembre 2021
Pose:
Astronomic SII 6nm 1.25: 137×180″ (6h 51′) (gain: 200.00) -20C bin 1×1
Astronomik H alpha 12 nm 2 inch Astronomik: 112×180″ (5h 36′) (gain: 200.00) -20C bin 1×1
Astronomik H alpha 12 nm 2 inch Astronomik: 16×300″ (1h 20′) (gain: 200.00) -20C bin 1×1
astronomic Oiii 6nm: 159×180″ (7h 57′) (gain: 200.00) -20C bin 1×1
Integrazione: 21h 44′
Dark: 33
Flat: 33
Dark dei flat: 33
Giorno lunare medio: 11.30 giorni
Fase lunare media: 33.02%
Scala del Cielo Scuro Bortle: 6.00
Centro AR: 4h 0′ 40″
Centro DEC: +36° 25′ 27″
Campionamento: 3,148 arcsec/pixel
Orientazione: 59,489 gradi
Raggio del campo: 2,345 gradi
Astrobin: https://www.astrobin.com/e8geaw/
NGC1499 California Nebula
William Optics Redcat 51 | ASI1600mm-Pro
SHO palette from Astronomik narrowband Ha, Sii Oiii 1,25″ filters drizzle data integration.
List of subframes as follow:
Ha: 11/08/2021 3 300s; 12/08/2021 13 300s;
14/08/2021 31 180s; 15/08/2021 30; 06/09/2021 6; 07/09/2021 25; 08/09/2021 9; 09/09/2021 9; 10/09/2021 2.
Sii Gain 200, offset 50, 180sec -20C : 29/08/2021 13; 30/08/2021 29; 31/08/2021 19; 01/09/2021 26; 05/09/2021 4; 06/09/2021 26; 09/09/2021 10; 10/09/2021 10
Oiii Gain 200, offset 50, 180sec -20C: 17/08/2021 29; 18/08/2021 31; 19/08/2021 11; 08/09/2021 10; 09/09/2021 10; 10/09/2021 10; 11/09/2021 6; 12/09/2021 34; 13/09/2021 18
Postproduction GIMP.
An attempt of astronomic photography postproduction using Gimp, made easy by excellent data quality retrieved from SPA-1-CCD Telescopelive network focused about NGC1333 and IC348.
Previous PixInSight processing made, generating an LRGB deconvoluted, denoised, starless/stars pre-elaboration, starless + 0,75% stars pixelmath integration before .tiff exporting and Gimp postprocessing.
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.
Thanks to Taras Prystavski contribute on Astrobin forum ( https://www.astrobin.com/forum/c/group-forums/comets-imaging/c2020-f3-neowise-comet-raw-data-from-remote-hosting/ ) I retrieved from IRSA resource all available data from ZTF telescope focused about Neowise comet; cfr. IRSA / ZTF – https://irsa.ipac.caltech.edu/applications/ztf/?__action=layout.showDropDown&
PixInSight had some problem in platesolving because of peculiar fits header, thus also was impossible to perform image registration > comet registration.
I thus worked just by star registration of the few subframes and then play an image integration for each filter: I assigned R channel to zr filter, G to zg and B to zi even I suspect other choose may be taken.
After that I made starless and star version for each channel and integrate in pixinsight the starry master, and in photoshop the starless master handly stacking rgb comet.
I finally played some photoshop tricks for pixel fixing, framing, dust lanes enhancing, etc…
I would like a more wider field of view for a next attempt, but I confess to me is simply exciting and so so funny to make post-production over these enormous scientific quality data from such powerful instruments! As when I play with JWST or Hubble data (cfr. https://mast.stsci.edu/portal/Mashup/Clients/Mast/Portal.html ) I’m simply totally stoked!
Thanks again to Taras!!!
