NGC 5367, also catalogued as IC 4347, a Reflection Nebula in Centaurus, lighted from two bluish components of the binary system h4636 from spectral type B4 and B7.
Nebula is associated with the cometary globule CG12, extending from bottom center to the upper right for more than 1°: dicovered in 1976 on an ESO/SRC Sky Survey plate taken with the UK Schmidt telescope, CG12 is in contrast to the most other Cometary Globules, because it is far away from the galactic disk by latitude as more than 21°.
A strong IRAS point source and a highly collimated outflow indicate that star formation is still going on. The head of the globule has been observed using NIR imaging (NTT sofi), mm continuum (SEST Simba) and sub mm (APEX) and mm (SEST) spectroscopy.
The molecular material is distributed in a 10′ North-South elongated lane with two compact maxima separated by 3′. Strong C^18O (3-2), (2-1) and (1-0) emission is detected in both maxima and both have an associated compact 1.2 mm continuum source.
The Northern core, CG 12 N, is cold and is possibly still pre-stellar. A stellar source with a NIR reflection nebulosity is observed near CG 12 N.
The observed C^18O line ratios are similar to those observed in Class 0 sources.
A remarkable C^18O (3-2) hot spot is detected in the direction of the Southern core, CG 12 S. It lies at the edge of a dense cloud core detected both in high density tracers (CS (3-2), H^13CO^+ (1-0) and DCO^+(2-1)) and in the 1.2 mm continuum.
The hot spot also lies on the axis of a highly collimated bipolar molecular outflow with a driving source most probably embedded in the dense core. This is the first detection of such a compact, warm object in a low mass star forming region.
NIR imaging reveals a bright cone-like feature with a faint counter cone in the centre of CG 12 S. The total mass (> 100 M[sun]) and the linear size of the CG 12 head (~3 pc) are similar to those of other nearby low mass star forming regions.
Even though the most evolved stars in CG 12 lie already on ZAMS the cloud contains also proto-stellar sources and a pre-stellar core.
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 · Astronomik OIII CCD 12nm 1.25″ · Astronomik OIII CCD 6nm · Astronomik SII CCD 6nm Accessori : ZWO ASIAIR Plus · 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
Dettagli d’acquisizione Date: 09 Dicembre 2021 · 11 Dicembre 2021 · 12 Dicembre 2021 · 13 Dicembre 2021 · 15 Dicembre 2021 · 16 Dicembre 2021 · 17 Dicembre 2021 · 18 Dicembre 2021 · 08 Gennaio 2022 · 09 Gennaio 2022 · 10 Gennaio 2022 · 11 Gennaio 2022 · 12 Gennaio 2022 · 13 Gennaio 2022 · 14 Gennaio 2022 · 16 Gennaio 2022 · 18 Gennaio 2022 · 22 Gennaio 2022 · 23 Gennaio 2022 · 24 Gennaio 2022 · 28 Gennaio 2022 · 29 Gennaio 2022 · 31 Gennaio 2022 · 01 Febbraio 2022 · 02 Febbraio 2022 · 05 Febbraio 2022
Pose: Astronomik H-alpha CCD 12nm 1.25″: 79×180″(3h 57′) (gain: 139.00) -20°C bin 1×1 Astronomik OIII CCD 12nm 1.25″: 62×180″(3h 6′) (gain: 139.00) -20°C bin 1×1 Astronomik SII CCD 12nm 1.25″: 77×180″(3h 51′) (gain: 139.00) -20°C bin 1×1 Integrazione: 10h 54′ Dark: 33, Flat: 33, Dark dei flat: 33 Giorno lunare medio: 12.35 giorni Fase lunare media: 58.64% Scala del Cielo Scuro Bortle: 6.00
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.
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
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
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
