#astroberry — Public Fediverse posts

My flat panel setup: a sideways laptop with a simple, auto-refreshing, html page with uniform background color opened full-screen. I `ssh` into the laptop to adjust the background color to get the desired level for each color channel depending on the filter used.

#astrophotography #astronomy #astrodon #calibration #ekos #kstars #astroberry #remmina #vim #ssh #pop_os #DYI

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

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

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

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

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

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

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

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

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

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

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

Measuring focuser backlash on the Newtonian and dialing in backlash compensation in the Ekos software focus tab.

The objective is to find the largest displacements (number of steps of the stepper motor) that does not move the dial gauge needle when making alternated in and out focuser movements. Once the backlash compensation value is dialed in, the software will add this number of steps to the requested focuser movement when changing direction. This should help repeatability of the auto-focus routine that uses measurement of star size at different focuser positions to achieve the best focus.

#astrophotography #astronomy #astrodon #precision #kstars #ekos #astroberry #foss

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

All setup, listening to the birds while I wait for darkness...

#astrophotography #astronomy #kstars #ekos #phd2 #astroberry #RaspberryPi

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

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

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

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

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

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

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

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

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

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

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

Did you know there were sharks in space? 🦈

This is the Dark Shark Nebula, LDN 1235 from Lynds Dark Nebula catalogue, in the constellation of Cepheus. It is a large cloud of interstellar dust that reflects the light of surrounding stars.

I captured this image Tuesday night from La Mauricie National Park (QC, 🇨🇦) where the low light pollution (Bortle 3) allows capturing this very dim object in a reasonable amount of time.

High resolution, annotated versions and technical details on Telescopius: https://telescopius.com/pictures/view/160334/deep_sky/Cr/471/open-cluster/by-drgfreeman

#astrophotography #astronomy #nebula #DarkNebula #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon

Image license: CC-BY-NC-SA-4.0

There are 5 galaxies visible in the image, can you spot them? Two are easy, three are more difficult.

The Elephant Trunk Nebula (IC 1396) in the Cepheus constellation.

A short night of astrophotography under the full moon yesterday night. I was mostly going to gather some hydrogen alpha (Ha) signal on the red channel of the camera which is less affected by the moon glow but I decided to try processing the RGB image anyway.

This is not my best image by far but I'm glad how it turned out considering the capture conditions. I am looking forward to combine this data with future data from a longer night with better sky conditions.

High resolution, annotated version and technical details on Telescopius: https://telescopius.com/pictures/view/152074/deep_sky/elephant-trunk/IC/1396/diffuse-nebula/by-drgfreeman

#ic1396 #astrophotography #astronomy #nebula #deepsky #photography #astroberry #kstars #ekos #phd2 #raspberrypi #astrodon

Image license CC-BY-NC-SA-4.0