#phd2 — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #phd2, aggregated by home.social.
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Recién salido del horno:
Confiar para abrirse a compartir: La comunidad de aprendizaje profesional a través de su propia mirada. Cuadernos del CLAEH, 44(122), e766.
https://doi.org/10.29192/claeh.766 -
Trying to get back to astrophotography after a long hiatus. As a starter, Lagoon Nebula (M8) photons for an hour.
80mm refractor, imx585 camera, no filter, PMC-Eight mount, 30mm guidescope, 2 mins sub, open-source software (NINA, PHD2, ASCOM, Carte du Ciel, DeepSkyStacker, Siril, Cosmic Clarity, GraXpert, Darktable), Bortle 5 sky.
#m8 #lagoonnebula #astrophotography #nina #phd2 #dss #ascom #carteduciel #siril #CosmicClarity #graxpert #darktable
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Trying to get back to astrophotography after a long hiatus. As a starter, Lagoon Nebula (M8) photons for an hour.
80mm refractor, imx585 camera, no filter, PMC-Eight mount, 30mm guidescope, 2 mins sub, open-source software (NINA, PHD2, ASCOM, Carte du Ciel, DeepSkyStacker, Siril, Cosmic Clarity, GraXpert, Darktable), Bortle 5 sky.
#m8 #lagoonnebula #astrophotography #nina #phd2 #dss #ascom #carteduciel #siril #CosmicClarity #graxpert #darktable
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Pruebas de galera de la Revista de Filosofía
#PhD2 #phd #tesis #resumen #thesis #philosophy #complexsystemshttps://www.flickr.com/photos/48964426@N02/54512674688/in/datetaken/
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I'm not done with the processing of my Soul Nebula (IC 1848) data but I thought I'd share this little crop from the larger image which has strong "cosmic cliffs" vibes.
Image: CC BY-NC-SA 4.0
#astrophotography #astronomy #astrodon #ic1848 #nebula #sho #DeepSky #space #darktable #kstars #ekos #phd2 #foss #CreativeCommons #ccbyncsa
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I'm not done with the processing of my Soul Nebula (IC 1848) data but I thought I'd share this little crop from the larger image which has strong "cosmic cliffs" vibes.
Image: CC BY-NC-SA 4.0
#astrophotography #astronomy #astrodon #ic1848 #nebula #sho #DeepSky #space #darktable #kstars #ekos #phd2 #foss #CreativeCommons #ccbyncsa
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The Helix Nebula (NGC 7293) is a planetary nebula in the constellation Aquarius. At approximately 655 light-years from Earth, it is one of the closest of the bright planetary nebulae.
The planetary nebula is formed by the shedding of the outer layers of its central star near the end of its evolution. The energy from the central star causes the expelled gases to fluoresce.
High resolution image and technical details on Telescopius: https://telescopius.com/pictures/view/201732/deep_sky/ngc-7293/helix-nebula/by-drgfreeman
Image license: CC BY-NC-SA 4.0.
#astrophotography #astronomy #photography #astrodon #nebula #PlaneratyNebula #DeepSky #space #NGC7293 #KStars #ekos #phd2 #GIMP
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The Helix Nebula (NGC 7293) is a planetary nebula in the constellation Aquarius. At approximately 655 light-years from Earth, it is one of the closest of the bright planetary nebulae.
The planetary nebula is formed by the shedding of the outer layers of its central star near the end of its evolution. The energy from the central star causes the expelled gases to fluoresce.
High resolution image and technical details on Telescopius: https://telescopius.com/pictures/view/201732/deep_sky/ngc-7293/helix-nebula/by-drgfreeman
Image license: CC BY-NC-SA 4.0.
#astrophotography #astronomy #photography #astrodon #nebula #PlaneratyNebula #DeepSky #space #NGC7293 #KStars #ekos #phd2 #GIMP
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Some nights the guiding is poor, some nights it is good. Tonight it is very good.
With the RA and Dec curves so flat, I would say it is dead good!
With a pixel scale of 1.38"/px and assuming a normal distribution, a <0.3" guiding error means that 99.7% of the time (±3𝜎) the total guiding error is less than 1.2 times the size of a pixel on the main camera!
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Some nights the guiding is poor, some nights it is good. Tonight it is very good.
With the RA and Dec curves so flat, I would say it is dead good!
With a pixel scale of 1.38"/px and assuming a normal distribution, a <0.3" guiding error means that 99.7% of the time (±3𝜎) the total guiding error is less than 1.2 times the size of a pixel on the main camera!
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Sh 2-155, from the Sharpless catalog, also known as the Cave Nebula, is a diffuse nebula in the constellation Cepheus, within a large nebula complex containing emission, reflection and dark nebulae. Sh 2-155 is an ionized H II region with ongoing star formation activity, at an estimated distance of 2400 light-years from Earth.
Technical details, high resolution and annotated versions available on Telescopius: https://telescopius.com/pictures/view/199742/deep_sky/sh-2-155/by-drgfreeman
Image license: CC BY-NC-SA 4.0.
#astrophotography #astronomy #photography #astrodon #nebula #DeepSky #space #sh2-155 #RGBHa #KStars #ekos #phd2 #GIMP
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Sh 2-155, from the Sharpless catalog, also known as the Cave Nebula, is a diffuse nebula in the constellation Cepheus, within a large nebula complex containing emission, reflection and dark nebulae. Sh 2-155 is an ionized H II region with ongoing star formation activity, at an estimated distance of 2400 light-years from Earth.
Technical details, high resolution and annotated versions available on Telescopius: https://telescopius.com/pictures/view/199742/deep_sky/sh-2-155/by-drgfreeman
Image license: CC BY-NC-SA 4.0.
#astrophotography #astronomy #photography #astrodon #nebula #DeepSky #space #sh2-155 #RGBHa #KStars #ekos #phd2 #GIMP
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Here's a quick processing of the broadband RGB data on the Cocoon Nebula (IC 5146) in the constellation Cygnus. Narrow-band Ha data to be added later.
#astrophotography #astronomy #astrodon #kstars #ekos #phd2 #IC5146 #Nebula #space
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Here's a quick processing of the broadband RGB data on the Cocoon Nebula (IC 5146) in the constellation Cygnus. Narrow-band Ha data to be added later.
#astrophotography #astronomy #astrodon #kstars #ekos #phd2 #IC5146 #Nebula #space
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SH 2-119 (from the Sharpless catalog of H II regions), also known as the Clamshell Nebula, is an emission nebula in the constellation Cygnus. It is fainter and not as frequently imaged as its western neighbour, the North America Nebula.
This image was captured over six nights between July 13 and August 1st. Two different dual narrow-band filters were used to capture the different wavelengths of the sulphur, hydrogen and oxygen emissions.
Technical details, high resolution and annotated versions available on Telescopius: https://telescopius.com/pictures/view/195532/deep_sky/open-cluster/sh-2-119/by-drgfreeman
Image license: CC-BY-NC-SA 4.0.
#astrophotography #astronomy #photography #astrodon #nebula #DeepSky #space #sh2-119 #sho #kstars #ekos #phd2 #DarkTable
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SH 2-119 (from the Sharpless catalog of H II regions), also known as the Clamshell Nebula, is an emission nebula in the constellation Cygnus. It is fainter and not as frequently imaged as its western neighbour, the North America Nebula.
This image was captured over six nights between July 13 and August 1st. Two different dual narrow-band filters were used to capture the different wavelengths of the sulphur, hydrogen and oxygen emissions.
Technical details, high resolution and annotated versions available on Telescopius: https://telescopius.com/pictures/view/195532/deep_sky/open-cluster/sh-2-119/by-drgfreeman
Image license: CC-BY-NC-SA 4.0.
#astrophotography #astronomy #photography #astrodon #nebula #DeepSky #space #sh2-119 #sho #kstars #ekos #phd2 #DarkTable
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The Crescent Nebula (NGC6888) is a cosmic bubble about 25 light-years across, in the constellation Cygnus, blown by winds from its central massive Wolf-Rayet star (WR136).
This image was captured on July 26 & 28 under quite bad sky conditions; low transparency due to smoke from wild fires in the West combined with Moon illumination.
Annotated version & technical details on Telescopius: https://telescopius.com/pictures/view/195218/deep_sky/crescent-nebula/diffuse-nebula/crescent-nebula/by-drgfreeman
Image license: CC-BY-NC-SA 4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #darktable #astrodon #ngc6888
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The Crescent Nebula (NGC6888) is a cosmic bubble about 25 light-years across, in the constellation Cygnus, blown by winds from its central massive Wolf-Rayet star (WR136).
This image was captured on July 26 & 28 under quite bad sky conditions; low transparency due to smoke from wild fires in the West combined with Moon illumination.
Annotated version & technical details on Telescopius: https://telescopius.com/pictures/view/195218/deep_sky/crescent-nebula/diffuse-nebula/crescent-nebula/by-drgfreeman
Image license: CC-BY-NC-SA 4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #darktable #astrodon #ngc6888
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The Elephant Trunk Nebula (IC 1396) in the constellation Cepheus in SHO palette.
This image was captured over three nights with an OSC (RGB) camera and two different dual narrow-band filters (Sulphur + Oxygen and Hydrogen + Oxygen emissions) allowing the SHO palette (Sulphur=Red, Hydrogen=Green and Oxygen=Blue). SHO images are usually captured with a monochrome camera and three separate narrow-band filters, one for each emission line.
Technical details, high resolution and annotated versions available on Telescopius: https://telescopius.com/pictures/view/193251/deep_sky/elephant-trunk/IC/1396/diffuse-nebula/elephant-trunk-nebula/by-drgfreeman
Image license: CC-BY-NC-SA 4.0.
#astrophotography #astronomy #photography #astrodon #nebula #DeepSky #space #ic1396 #kstars #ekos #phd2
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The Elephant Trunk Nebula (IC 1396) in the constellation Cepheus in SHO palette.
This image was captured over three nights with an OSC (RGB) camera and two different dual narrow-band filters (Sulphur + Oxygen and Hydrogen + Oxygen emissions) allowing the SHO palette (Sulphur=Red, Hydrogen=Green and Oxygen=Blue). SHO images are usually captured with a monochrome camera and three separate narrow-band filters, one for each emission line.
Technical details, high resolution and annotated versions available on Telescopius: https://telescopius.com/pictures/view/193251/deep_sky/elephant-trunk/IC/1396/diffuse-nebula/elephant-trunk-nebula/by-drgfreeman
Image license: CC-BY-NC-SA 4.0.
#astrophotography #astronomy #photography #astrodon #nebula #DeepSky #space #ic1396 #kstars #ekos #phd2
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The Pelican Nebula (IC 5070) is an emission nebula associated with the North America Nebula in the constellation Cygnus. It is separated from the North America Nebula by a foreground molecular dust cloud.
Annotated & high quality versions and technical details available on Telescopius: https://telescopius.com/pictures/view/191806/deep_sky/pelican-nebula/IC/5070/bright-nebula/pelican-nebula/by-drgfreeman
The work on the Newtonian paid off and I'm happy with the results. This was the first time I tried the 150 mm f/5 Newtonian with the Starizona Nexus 0.75x coma corrector/reducer and my older ASI183MC Pro camera. The pixel scale (0.88"/px) with this setup is a good match with the scope's resolution limit and the faster focal ratio of f/3.7 with the reducer helps with the somewhat noisier camera.
Image license: CC-BY-NC-SA 4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #astrodon
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The Pelican Nebula (IC 5070) is an emission nebula associated with the North America Nebula in the constellation Cygnus. It is separated from the North America Nebula by a foreground molecular dust cloud.
Annotated & high quality versions and technical details available on Telescopius: https://telescopius.com/pictures/view/191806/deep_sky/pelican-nebula/IC/5070/bright-nebula/pelican-nebula/by-drgfreeman
The work on the Newtonian paid off and I'm happy with the results. This was the first time I tried the 150 mm f/5 Newtonian with the Starizona Nexus 0.75x coma corrector/reducer and my older ASI183MC Pro camera. The pixel scale (0.88"/px) with this setup is a good match with the scope's resolution limit and the faster focal ratio of f/3.7 with the reducer helps with the somewhat noisier camera.
Image license: CC-BY-NC-SA 4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #astrodon
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Yesterday's guiding. Never had this good guiding before! The whole night was between this and 0.45". This is with the 6" Newtonian on the HEQ5 (belt modded) and an off axis guider (0.88"/px). No wind and exceptionally good seeing for this corner of the world.
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Yesterday's guiding. Never had this good guiding before! The whole night was between this and 0.45". This is with the 6" Newtonian on the HEQ5 (belt modded) and an off axis guider (0.88"/px). No wind and exceptionally good seeing for this corner of the world.
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A view of the extensive H II emission regions in the constellation Cygnus, just North of the star Sadr (γ Cygni), which forms the intersection of the asterism known as the Northern Cross.
At the bottom right is the NGC 6914 reflection nebula, blue halos created by the reflection of the light from blue giant stars on the surrounding interstellar dust.
The field of view is 3.2 x 2.1 degrees, with the celestial North to the left of the image.
High quality/resolution version & technical details on Telescopius: https://telescopius.com/pictures/view/191255/deep_sky/NGC/6914/bright-nebula/north-west-of-gamma-cygni/by-drgfreeman
Image license: CC-BY-NC-SA 4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #DarkTable #raspberrypi #astrodon
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A view of the extensive H II emission regions in the constellation Cygnus, just North of the star Sadr (γ Cygni), which forms the intersection of the asterism known as the Northern Cross.
At the bottom right is the NGC 6914 reflection nebula, blue halos created by the reflection of the light from blue giant stars on the surrounding interstellar dust.
The field of view is 3.2 x 2.1 degrees, with the celestial North to the left of the image.
High quality/resolution version & technical details on Telescopius: https://telescopius.com/pictures/view/191255/deep_sky/NGC/6914/bright-nebula/north-west-of-gamma-cygni/by-drgfreeman
Image license: CC-BY-NC-SA 4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #DarkTable #raspberrypi #astrodon
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Linking a post from last year with a photo taken with the exact same setup and same location. https://techhub.social/@jdlbt/110605793090878469
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
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Linking a post from last year with a photo taken with the exact same setup and same location. https://techhub.social/@jdlbt/110605793090878469
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
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All setup, listening to the birds while I wait for darkness...
#astrophotography #astronomy #kstars #ekos #phd2 #astroberry #RaspberryPi
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All setup, listening to the birds while I wait for darkness...
#astrophotography #astronomy #kstars #ekos #phd2 #astroberry #RaspberryPi
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It was also the first time I tried using a tablet instead of a laptop to remotely control the Kstars/Ekos & PHD2 software running on the Raspberry Pi attached to my astrophoto rig over VNC.
Although Kstars/Ekos are not designed for tactile use, I found it perfectly functional with the way the VNC client uses the screen as a big touchpad and allows for zooming.
Also, combining the use of the tablet's "night mode" and "extra dimming" feature with a contrasting color theme in Kstars allowed for a visually comfortable experience with little blue light that would otherwise ruin night vision.
I will probably keep using the laptop for initial setup but then use the tablet to monitor and make adjustments when required.
#astrophotography #kstars #ekos #phd2 #astroberry #RaspberryPi #foss #linux
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It was also the first time I tried using a tablet instead of a laptop to remotely control the Kstars/Ekos & PHD2 software running on the Raspberry Pi attached to my astrophoto rig over VNC.
Although Kstars/Ekos are not designed for tactile use, I found it perfectly functional with the way the VNC client uses the screen as a big touchpad and allows for zooming.
Also, combining the use of the tablet's "night mode" and "extra dimming" feature with a contrasting color theme in Kstars allowed for a visually comfortable experience with little blue light that would otherwise ruin night vision.
I will probably keep using the laptop for initial setup but then use the tablet to monitor and make adjustments when required.
#astrophotography #kstars #ekos #phd2 #astroberry #RaspberryPi #foss #linux
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I'm grateful to all the developers of the different open source software I use in the image capture and processing.
#Kstars #Ekos #PHD2 #indi #Astroberry #Darktable #Gimp #ImageMagik #Linux #astropy #foss
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I'm grateful to all the developers of the different open source software I use in the image capture and processing.
#Kstars #Ekos #PHD2 #indi #Astroberry #Darktable #Gimp #ImageMagik #Linux #astropy #foss
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Very likely my last image of 2023, this is the Jellyfish Nebula (IC443), the remnant of a supernova in the constellation Gemini. The two large orange stars are Mu and Eta Geminorum, two red giants at the feet of the rightmost of the two "stick figures" that form the constellation Gemini.
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/173987/deep_sky/jellyfish-nebula/IC/443/supernova-remnant/by-drgfreeman
Image license: CC-BY-NC-SA-4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #darktable #raspberrypi #astrodon
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Very likely my last image of 2023, this is the Jellyfish Nebula (IC443), the remnant of a supernova in the constellation Gemini. The two large orange stars are Mu and Eta Geminorum, two red giants at the feet of the rightmost of the two "stick figures" that form the constellation Gemini.
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/173987/deep_sky/jellyfish-nebula/IC/443/supernova-remnant/by-drgfreeman
Image license: CC-BY-NC-SA-4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #darktable #raspberrypi #astrodon
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A widefield view of the Pleiades cluster and reflection nebula (M45) at the North-West end of the constellation Taurus. The surrounding interstellar dust in is illuminated by the blue giant stars of the cluster, giving this nice fuzzy blue cloud look.
While most images of the Pleiades focus on the cluster itself, I wanted to take a wider field image to show the extent of the interstellar dust in this area, including this long arching structure to the left of the cluster in the image.
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/173773/deep_sky/pleiades/M/45/bright-nebula/by-drgfreeman
Image license: CC-BY-NC-SA-4.0
#astrophotography #astronomy #deepsky #photography #cluster #stars #pleiades #m45 #nebula #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
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A widefield view of the Pleiades cluster and reflection nebula (M45) at the North-West end of the constellation Taurus. The surrounding interstellar dust in is illuminated by the blue giant stars of the cluster, giving this nice fuzzy blue cloud look.
While most images of the Pleiades focus on the cluster itself, I wanted to take a wider field image to show the extent of the interstellar dust in this area, including this long arching structure to the left of the cluster in the image.
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/173773/deep_sky/pleiades/M/45/bright-nebula/by-drgfreeman
Image license: CC-BY-NC-SA-4.0
#astrophotography #astronomy #deepsky #photography #cluster #stars #pleiades #m45 #nebula #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
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The heart of the Heart Nebula (IC1805) in the constellation Cassiopeia.
This is the first image from my new 150/750mm f/5 Newtonian telescope, and the first image I produce in months due mostly to bad weather and some guiding issues with the new scope (resolved with off-axis guiding).
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/173634/deep_sky/heart-nebula/IC/1805/diffuse-nebula/by-drgfreeman
Image license: CC-BY-NC-SA-4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
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The heart of the Heart Nebula (IC1805) in the constellation Cassiopeia.
This is the first image from my new 150/750mm f/5 Newtonian telescope, and the first image I produce in months due mostly to bad weather and some guiding issues with the new scope (resolved with off-axis guiding).
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/173634/deep_sky/heart-nebula/IC/1805/diffuse-nebula/by-drgfreeman
Image license: CC-BY-NC-SA-4.0
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
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Here is the result of combining the narrow band Hydrogen alpha data I captured Wednesday with the broadband RGB data of the Andromeda Galaxy (Messier 31) I captured earlier. The Hydrogen alpha narrow band signal (red) helps bringing out the emission nebulae in the galaxy arms.
High resolution, annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/161040/deep_sky/andromeda-galaxy/M/31/galaxy/by-drgfreeman
#astrophotography #astronomy #galaxy #M31 #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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Here is the result of combining the narrow band Hydrogen alpha data I captured Wednesday with the broadband RGB data of the Andromeda Galaxy (Messier 31) I captured earlier. The Hydrogen alpha narrow band signal (red) helps bringing out the emission nebulae in the galaxy arms.
High resolution, annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/161040/deep_sky/andromeda-galaxy/M/31/galaxy/by-drgfreeman
#astrophotography #astronomy #galaxy #M31 #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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Thursday night was the local astronomy club meetup in the field. While we were chatting and doing visual astronomy, my astrophotography rig captured the data that I later processed into this image.
This is Sh2-132 (from the Sharpless catalogue), an emission nebula in the constellation Cepheus sometimes referred to as the Lion Nebula. Its glowing gases are ionized by very hot and massive stars, including two Wolf-Rayet stars and one class O star.
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/163242/deep_sky/NGC/7226/open-cluster/by-drgfreeman
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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Thursday night was the local astronomy club meetup in the field. While we were chatting and doing visual astronomy, my astrophotography rig captured the data that I later processed into this image.
This is Sh2-132 (from the Sharpless catalogue), an emission nebula in the constellation Cepheus sometimes referred to as the Lion Nebula. Its glowing gases are ionized by very hot and massive stars, including two Wolf-Rayet stars and one class O star.
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/163242/deep_sky/NGC/7226/open-cluster/by-drgfreeman
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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Yesterday night I captured a little over five hours of data on the Andromeda galaxy (Messier 31) with a dual narrow-band filter that captures the Oxygen III (cyan) and Hydrogen alpha (red) emission lines. Below is the result of stacking the best four hours and six minutes with minimal processing (stretch, basic colour calibration and a hint of saturation boost).
While the galaxy is a broadband target, the goal of using narrow band filters is to better isolate the emission nebulae inside the galaxy. Here, the Hydrogen alpha regions can be seen in red in the galaxy arms.
When I have a bit of time, I will combine this new narrow band data with the RGB data I captured a couple of weeks ago. The result should have enhanced colours in the Ha regions.
#astrophotography #astronomy #galaxy #M31 #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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Yesterday night I captured a little over five hours of data on the Andromeda galaxy (Messier 31) with a dual narrow-band filter that captures the Oxygen III (cyan) and Hydrogen alpha (red) emission lines. Below is the result of stacking the best four hours and six minutes with minimal processing (stretch, basic colour calibration and a hint of saturation boost).
While the galaxy is a broadband target, the goal of using narrow band filters is to better isolate the emission nebulae inside the galaxy. Here, the Hydrogen alpha regions can be seen in red in the galaxy arms.
When I have a bit of time, I will combine this new narrow band data with the RGB data I captured a couple of weeks ago. The result should have enhanced colours in the Ha regions.
#astrophotography #astronomy #galaxy #M31 #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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I captured two and a half additional nights of data on NGC 7822, this time with a different dual narrow-band filter that captures the Oxygen III emission line in the green and blue channels of the camera and the Sulphur II emission line on the red channel.
Combining this new data with the original data (Oxygen III and Hydrogen Alpha), I produced an SHO image where the Sulphur II, Hydrogen Alpha and Oxygen III emission lines are assigned to the the red, green and blue channels of the image respectively.
In total 13h 30m of data, 5h 5m on the Oiii+Ha filter and 8h 25m on the Oiii+Sii filter.
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/159220/deep_sky/NGC/7822/diffuse-nebula/by-drgfreeman
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #darktable #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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I captured two and a half additional nights of data on NGC 7822, this time with a different dual narrow-band filter that captures the Oxygen III emission line in the green and blue channels of the camera and the Sulphur II emission line on the red channel.
Combining this new data with the original data (Oxygen III and Hydrogen Alpha), I produced an SHO image where the Sulphur II, Hydrogen Alpha and Oxygen III emission lines are assigned to the the red, green and blue channels of the image respectively.
In total 13h 30m of data, 5h 5m on the Oiii+Ha filter and 8h 25m on the Oiii+Sii filter.
Full resolution + annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/159220/deep_sky/NGC/7822/diffuse-nebula/by-drgfreeman
#astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #darktable #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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Here is a 3.3 x 2.2 degrees field of view in the constellation of Cepheus that includes many objects; the Lobster Claw Nebula (Sharpless 2-157), the Bubble Nebula (NGC 7635), the NGC 7538 emission nebula and the Sharpless 2-161 H II region, as well as the Messier 52 and NGC 7510 open clusters.
The data was captured under bright moonlight on three nights between August 27 and September 3. The moonlight made the data noisy and difficult to process.
High resolution, annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/161524/deep_sky/bubble-nebula/NGC/7635/diffuse-nebula/by-drgfreeman
#astrophotography #astronomy #nebula #cepheus #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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Here is a 3.3 x 2.2 degrees field of view in the constellation of Cepheus that includes many objects; the Lobster Claw Nebula (Sharpless 2-157), the Bubble Nebula (NGC 7635), the NGC 7538 emission nebula and the Sharpless 2-161 H II region, as well as the Messier 52 and NGC 7510 open clusters.
The data was captured under bright moonlight on three nights between August 27 and September 3. The moonlight made the data noisy and difficult to process.
High resolution, annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/161524/deep_sky/bubble-nebula/NGC/7635/diffuse-nebula/by-drgfreeman
#astrophotography #astronomy #nebula #cepheus #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon
Image license: CC-BY-NC-SA-4.0
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Clear skies are too precious to waste, even if it's the full/super/blue/whatever moon.
Luckily, narrow band filters help making the data collected under moon glow usable.
I can see details of the Bubble Nebula in the individual sub exposures so hopefully I'll be able to process this into an acceptable image.
#astrophotography #astronomy #astrodon #astroberry #kstars #ekos #phd2
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Clear skies are too precious to waste, even if it's the full/super/blue/whatever moon.
Luckily, narrow band filters help making the data collected under moon glow usable.
I can see details of the Bubble Nebula in the individual sub exposures so hopefully I'll be able to process this into an acceptable image.
#astrophotography #astronomy #astrodon #astroberry #kstars #ekos #phd2
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How it started | How it's going
Almost OTD one year ago I started my journey down the astrophotography rabbit hole.
I took my first astronomical picture, the Andromeda galaxy (M31), with a stock DSLR, a zoom lens and a simple star tracker (Canon T7i, Canon 70-200mm f/4 and SW Star Adventurer, 176 x 60s). I was quite happy of the result and hooked into the hobby.
Fast forward one year and I shot the Andromeda galaxy again, this time with my latest process, techniques and equipment.
High resolution, annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/161040/deep_sky/andromeda-galaxy/M/31/galaxy/by-drgfreeman
#astrophotography #astronomy #galaxy #M31 #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon #HowItStarted
Image license: CC-BY-NC-SA-4.0