An LRGB view for Sh-2 136 (VdB-141) reflection nebula in Cepheus.
600 seconds subframes recorded from IC Observatory in Spain by Officina Stellare ProRC 700 with Proline FLI PL16803 CCD camera at -25 celsius, retrieved from Telescopelive network.
Three different elaboration and L channel integration
Astrobin:
According to Karina Voggel and Colleagues investigation of 2022 focused about NGC7727 galaxy in Aquarius, as merging of two distinct galaxies, it was evinced that both host a SMBH – super-massive black hole; cfr. Karina T. Voggel, Anil C. Seth, Holger Baumgardt, Bernd Husemann, Nadine Neumayer, Michael Hilker, Renuka Pechetti, Steffen Mieske, Antoine Dumont and Iskren Georgiev, 2022 “First direct dynamical detection of a dual supermassive black hole system at sub-kiloparsec separation” in Astronomy & Astrophysics, Vol.658: A152 [doi https://doi.org/10.1051/0004-6361/202140827]
Crabtree and Smecker-Hane 1994 researches gave datation of galaxies merging at about 1 billion years ago: cfr. Crabtree Dennis R. and Smecker-Hane Tammy, 1994 “Young Star Clusters and CO Gas in the Galaxy Merger, NGC 7727 (Arp 222)” in American Astronomical Society, 185th AAS Meeting, id.107.14; Bulletin of the American Astronomical Society, Vol. 26, p.1499 [https://ui.adsabs.harvard.edu/abs/1994AAS…18510714C/abstract]
Astrobin:
LRGB 300sec subframes recorded between 11/08/2023 and 22/08/2023 by Planewave CDK24 and QHY 600M Pro CMOS camera from Telescoplive network El Sauce Observatory in Rio Hurtado Valley, Chile.
M33 from IC Spain Observatory, LRGB 600sec subframes recorded between 28/09/2021 and 16/01/2022 by Takahashi FSQ-106ED with Proline FLI PL16083 from Telescopelive network; astrobin https://www.astrobin.com/zkhypx/C/
Original widefield cropped twice
to better focusing about Galaxy.
M33 Galaxy lies among my best favourites targets and IMHO it is very difficult to be photographed.
Helix Nebula in narrowband, HOO and SHO palette.
Data retrieve from Telescopelive network, El Sauce Observatory in Chile, Planewave CDK24 with QHY600M Pro CMOS camera, subframes of 300sec recorded between 30/06/2023 and 02/07/2023.
Astrobin:
SHO palette integration.
Starless and star composition made in Photoshop, with different fixing and adjustement layers; .psd master for SHO available here, and HOO here.
LRGB record of Draco galactic trio NGC5985, NGC5982 and NGC5981, from IC Astronomy Observatory of Telescopelive network, Officina Stellare ProRC 700 and Proline FLI PL16803 CCD camera, subframes of 300sec.
These galaxies are roughly 100 million light-years away. The faint, sharp-edged shells surrounding elliptical NGC 5982 suggests evidence of past galactic mergers.
Astrobin:
Comet Leonard C/2021 A1 from iDK Namibia remote telescope, Skygems.
Astrobin: https://www.astrobin.com/w0ah2q/
Very hard but completely stocked within this processing; mosaic is obtained by 4 different kind of imaging, at different binning. BIN2 mosaic in LRGB consisted in 3 framing. one for the comet head, another framing for the middle comet tail, third framing for distal part of comet tail.
Bin1 Luminance set finally integrated within mosaic.
Final star & starless integration in Photoshop, with numerous adjustement layers and pixel fixing needed.
Dataset available for free from Skygem network here: https://forum.skygems-observatories.com/d/104-new-year-present-c2021-a1-data-set
Calibration is not quite easy as Skygems archives missing proper dark for right calibrated masterflat creation.
Comet C/2023 E1 Atlas from Ic Astronomy Observatory, Spain, Takahashi FSQ-106ED (106 mm) F3.6 telescope with CMOS camera QHY600M Pro.
Astrobin: https://www.astrobin.com/ihrzvk/
Supernova SN 2023rve in NGC1097, LRGB channels.
Astrobin: https://www.astrobin.com/66lpty/D/
Supernova recorded between 13 and 19 September 2023 by Planewave CDK24 and QHY 600M Pro CMOS camera from El Sauce Observatory, Rio Hurtado Vallei in Chile – Telescopelive network;
NGC1097 image without SN2023rve recorded by the same Planewave with CCD Proline FLI PL9000 between 23/02/2023 and 25/11/2022.
CCD subframes star-registred to CMOS (with SN2023rve) for right overlay on mouseover activity.
Photoshop layered masters available here:
Preliminary and quick elaboration of Supernova SN2023rve in NGC1097 galaxy, data from Planewave CDK24 and QHY 600M Pro CMOS camera from Telescopelive.
Astrobin: https://www.astrobin.com/x9mdi4/F/
Barnard 150 “Seahorse” nebula in LRGB, from Almeria (Spain) Takahashi FSQ-106EDX4 (106 mm) F3.6 with CCD Proline FLI PL16083; 600″ subframes.
Amazing wider field view includes many DSO objects.
Annotated wider field view shows PGC galaxies and details.
Starless stage of image post production before Photoshop reassebling reveals nebulosity complex details and structures.
After cosmetic correction of calibrated data, I processed subframes within star registration and integrated each channel. LRGB channel combination gave the starting point master. It was processed into dynamic BG removal and after platesolving colors were calibrated by SPCC.
Deconvolution and denoise followed to thus apply color masks for a first enhancement of colors and contrast first to the whole starry file, thus to starless and stars separated flows for better result.
Final composition of image made in Photoshop; original .psd with layers groups and adjustement here available.
