Difficult object to capture "properly" in narrowband only, as it's both an emission and reflection nebula, and the OIII data is almost non existant.

I managed to get enough OIII data to somewhat highlight the areas that would be part of the reflection nebula (and even then, the OIII data is stretched to the limit).

Shot between the 3rd and the 9th of January 2025.
Palette: HSS, with OIII added in a second stage with a blue-ish tint.

Another shot from 2022

I found a few images in my archive that needed processing. Not the best shots, but I managed to get something out of it.
This is from Dec 2022, 7 hours total exposure in narrowband (SHO + a colourised HSO to emulate natural colours).

After missing it the first time, the Aurora came back, visible even here in southern England.I managed to grab an almost night long timelapse, with a few selected highlights.
I used the "revisions" mechanism to upload 3 different frames, but please check out the [url=https://www.youtube.com/watch?v=4Z3GD9sv2nc]full timelapse[/url] as well.

Planetary season is starting again, and I got a new ASI678MC for the occasion.

Bit of a rushed shot, but quite happy about the results, given the planet wasn't too high yet, and seeing was terrible (as usual)

First light for my new C11. Really terrible seeing, and lots of things to still learn, but already much better results than my old C7 Mak.

Weather was mostly cloudy or veiled, but I managed to get a few clean frames between the clouds

IC 1396 in narrowband from London.

Shot over three nights in August, September and October, with almost 19 hours of acquisition.
First light for both my new  ASI2600MM and Chroma narrowband filters.

This new 2024 version, aside from using new modern tools such as BlurXterminator and NoiseXterminator, makes use of a different technique illustrated by Adam Block.
The image was first rendered with an HOO palette, then SII data was added back with a yellow tint.

I really like this new output, the colours are quite rich and well balanced, especially compared to the older HOO and SHO versions.

The other (older) versions were processed using three different palettes: SHO (classic "Hubble palette", with more contrast), HOO (using only oxygen and hydrogen filters, more realistic colours), and HOS (middleground between the two).

This sequence was shot over 3.5 hours to try and capture Jupiter's rotation as smoothly as possible.
Seeing was fairly bad, but that's quite standard around here.
I also changed the camera to the ASI183MM Pro, cooled down to -15 degrees to try and minimize noise.

You can also see an eclipse of the moon Europa: at the beginning of the animation it disappears behind the Gas Giant, suddenly reappearing at the end of the video after leaving the planet shadow.

A better version of both videos can be found in my website: [url=https://gulinux.net/blog/2022-10-10-jupiter-animation-with-europa-eclipse]gulinux.net[/url]

First proper attempt at narrowband imaging and processing.
This started mostly just as a test session, since the first part of the night was cursed with passing clouds right in front of my target. I also had some problems with the autofocuser (that just stopped working at some point), and balancing issues.
All things considered, not too bad...
I processed the image in both HOO palette (more natural looking) and SHO.

California nebula under London Sky.

Conditions weren't exactly ideal: light pollution, obviously, then clouds rolled in just when I was ready to start my sequence, shortening capture time by a couple of hours.

Also, the nearly full moon was very close to the target, causing some nasty reflections on the (now cropped out) border of the image.

Overall I'm quite satisfied by the result though, the Optolong L-Enhance filter seems to be doing a really great job.

The target of the month, in two versions: a RGB combination (left), and with an IR-pass filter (right).

Finally got a decent night for imaging Jupiter and Saturn, very low here in the UK (just around 15 degrees above the horizon).

Seeing was terrible, but I'm still relatively satisfied with the results, given how difficult these planets are this year from this latitude.

Given the unusual stride of sunny days and clear nights, and the lockdown in force, forcing me to stay indoors instead of searching for dark places, but also offering more time for imaging at the same time, I decided to take a few steps in doing more "garden astrophotography".

This is my first experiment with some new equipment: an Optolong L-Enhance narrowband filter, and a iOptron CEM40. The first allows me to image many targets even from heavily light polluted skies (here in London, Bortle 8 or 9), the latter allows for longer exposures, a necessity using narrowband.

Full story: [url=https://blog.gulinux.net/en/blog/2020-06-01-backyard-deep-sky-north-america-and-pelican]https://blog.gulinux.net/en/blog/2020-06-01-backyard-deep-sky-north-america-and-pelican[/url]

Detail of the Small Magellanic Cloud. (NGC 346 and 371 among others)

Wide field shot of the Milky Way around Aquila. Altair is clearly visible in the field.

A first test for my new ASI 1600mm.

This camera has bigger pixels and a larger sensor than my other camera, the ASI 178mm, so it's more suitable for deep sky imaging rather than planetary shots.

But with such large field of view I can get a picture of the moon without having to stich it.

Blog article: [url=http://blog.gulinux.net/blog/2017-04-08-jupiter-and-moon-06-04-2017]http://blog.gulinux.net/blog/2017-04-08-jupiter-and-moon-06-04-2017[/url]

Composite shot of 78 images.

For each image I stacked 300 frames (out of 500).

Very poor seeing (lots of turbulence, since I shot it through an open window).

Difficult object to capture "properly" in narrowband only, as it's both an emission and reflection nebula, and the OIII data is almost non existant.

I managed to get enough OIII data to somewhat highlight the areas that would be part of the reflection nebula (and even then, the OIII data is stretched to the limit).

Shot between the 3rd and the 9th of January 2025.
Palette: HSS, with OIII added in a second stage with a blue-ish tint.

Another shot from 2022

I found a few images in my archive that needed processing. Not the best shots, but I managed to get something out of it.
This is from Dec 2022, 7 hours total exposure in narrowband (SHO + a colourised HSO to emulate natural colours).

IC 1396 in narrowband from London.

Shot over three nights in August, September and October, with almost 19 hours of acquisition.
First light for both my new  ASI2600MM and Chroma narrowband filters.

This new 2024 version, aside from using new modern tools such as BlurXterminator and NoiseXterminator, makes use of a different technique illustrated by Adam Block.
The image was first rendered with an HOO palette, then SII data was added back with a yellow tint.

I really like this new output, the colours are quite rich and well balanced, especially compared to the older HOO and SHO versions.

The other (older) versions were processed using three different palettes: SHO (classic "Hubble palette", with more contrast), HOO (using only oxygen and hydrogen filters, more realistic colours), and HOS (middleground between the two).

First proper attempt at narrowband imaging and processing.
This started mostly just as a test session, since the first part of the night was cursed with passing clouds right in front of my target. I also had some problems with the autofocuser (that just stopped working at some point), and balancing issues.
All things considered, not too bad...
I processed the image in both HOO palette (more natural looking) and SHO.

A bit noisier than I would have hoped for, but given the terrible weather this winter I didn't manage to get enough frames for a better picture (barely 3 and a half hours in total).

Still, not a terrible picture either.

California nebula under London Sky.

Conditions weren't exactly ideal: light pollution, obviously, then clouds rolled in just when I was ready to start my sequence, shortening capture time by a couple of hours.

Also, the nearly full moon was very close to the target, causing some nasty reflections on the (now cropped out) border of the image.

Overall I'm quite satisfied by the result though, the Optolong L-Enhance filter seems to be doing a really great job.

Given the unusual stride of sunny days and clear nights, and the lockdown in force, forcing me to stay indoors instead of searching for dark places, but also offering more time for imaging at the same time, I decided to take a few steps in doing more "garden astrophotography".

This is my first experiment with some new equipment: an Optolong L-Enhance narrowband filter, and a iOptron CEM40. The first allows me to image many targets even from heavily light polluted skies (here in London, Bortle 8 or 9), the latter allows for longer exposures, a necessity using narrowband.

Full story: [url=https://blog.gulinux.net/en/blog/2020-06-01-backyard-deep-sky-north-america-and-pelican]https://blog.gulinux.net/en/blog/2020-06-01-backyard-deep-sky-north-america-and-pelican[/url]

Tarantula Nebula, shot from Tivoli Astro Farm, Namibia.

Quick test shot of M42 in London.

Veil nebula shot at Colle dell'Agnello

The region around Deneb and Sadr, in the Cygnus constellation.

Full of stars and nebulosity, given it's special position in the middle of the Milky Way, this picture features many of them, like the North America, Pelican, Gamma Cyg Nebula, Crescent.

Blog article: [url=http://blog.gulinux.net/blog/2017-06-20-cygnus-heart]http://blog.gulinux.net/blog/2017-06-20-cygnus-heart[/url]

Red data only, as light pollution ruined other wavelengths

Blog article: [url=http://blog.gulinux.net/blog/2016-11-29-wide-field-orion-nebula-flame-horsehead]http://blog.gulinux.net/blog/2016-11-29-wide-field-orion-nebula-flame-horsehead[/url]

Messier 42 in a first quick test shot

Moon, the area around Plato crater (the biggest in this image, with an "ear" to its right).

Above it, slightly to the left, there's Cassini, a medium sized crater with two smaller craters inside (Cassini A and B).

Separating the two, the Montes Alpes, with the Vallis Alpes within, then Mont Blanc.

To the far left, another two big craters, Aristotelest (the biggest) and Eudoxus.

To the top/right, the vast plain of Mare Imbrium.

Moon, Copernicus crater, one of the most prominent of our satellite.

Nearby is also visible the crater Eratosthenes.

Shot with my SkyMax 180, ASI 178MM

This composition of multiple shots was taken with my usual planetary camera, after testing the newer one.

The smaller pixels allow to resolve much more details than the previous image, and the higher resulting speed also helps in getting more frames for stacking.

A few areas are a bit ruined due to the stiching process, I hope to be able to reprocess this in the future.

Blog article: [url=http://blog.gulinux.net/blog/2017-04-08-jupiter-and-moon-06-04-2017]http://blog.gulinux.net/blog/2017-04-08-jupiter-and-moon-06-04-2017[/url]

A first test for my new ASI 1600mm.

This camera has bigger pixels and a larger sensor than my other camera, the ASI 178mm, so it's more suitable for deep sky imaging rather than planetary shots.

But with such large field of view I can get a picture of the moon without having to stich it.

Blog article: [url=http://blog.gulinux.net/blog/2017-04-08-jupiter-and-moon-06-04-2017]http://blog.gulinux.net/blog/2017-04-08-jupiter-and-moon-06-04-2017[/url]

My first moon shots with my new setup. Seeing was average.

Composition of 8 different images, unfortunately not complete.

Mosaic of three images, stitched together with gimp.

Seeing wasn't too bad, not excellent either.

Just a test shot, with a very bad seeing and a partially cloudy sky

Just a test shot, with a very bad seeing and a partially cloudy sky

Just a test shot, with a very bad seeing and a partially cloudy sky

Copernicus crater, with a very bad seeing.

Just 100 frames out of 1000 were good enough to be stacked.

Composite shot of 78 images.

For each image I stacked 300 frames (out of 500).

Very poor seeing (lots of turbulence, since I shot it through an open window).

Mosaic of various frames, using hugin

Composition of several images (up to 90), using a webcam, Registax 6 to process video and Hugin to merge them.

Detail of the Small Magellanic Cloud. (NGC 346 and 371 among others)

On this night I wanted to shoot another subject, but after some minor equipment issues, and more importantly after being completely surrounded by clouds for almost an hour, it was alread too late, and I had very little time to get a proper shot at it.

So I decided to go for the evergreen M31, a very easy subject, showing so much data even with a relatively short total exposure time.

This is the result of 1 hour and 12 minutes of exposures (originally 1:45, some frames were discarded for their poor quality).

The ISS doing a close approach to Arcturus from South Ealing.

At the end of the sequence, in the bottom left corner, a plane also intrudes in the field of view.

Blog article: [url=http://blog.gulinux.net/blog/2017-06-05-iss-passing-by-arcturus]http://blog.gulinux.net/blog/2017-06-05-iss-passing-by-arcturus[/url]

Video on youtube: [url=https://youtu.be/uQ2MAcVAf6A]https://youtu.be/uQ2MAcVAf6A[/url]

This was meant to be an improvement to the previous ISS shooting, since I tried to do it with a bigger telescope, but the low altitude and the very bad seeing did actually worsen the quality.

ISS transits over the Moon.

Video on youtube: [url=https://youtu.be/Fcwv85l20Xo]https://youtu.be/Fcwv85l20Xo[/url]

I shot this with my 130mm F/5 telescope, to be sure to have a field wide enough to not miss the space station.

It was still daylight, with the moon very low in altitude.

Also, I had to track the moon manually, since this telescope has a dobsonian mount.

Weather was mostly cloudy or veiled, but I managed to get a few clean frames between the clouds

A very big sun spot from May 2016

Sunspots - first tests

Sunspots - first tests

Sunspots - first tests

Image was a bit overexposed, so I decided to process it enhancing just the sunspots.

Composition of multiple videos, using 400 frames from each one (out of 1000)

Just a quick snap done with a small 60mm telescope and my Canon EOS 80D during April's 2020 conjunction between the bright planet and the Pleiades.

First experiments with RGB compositing.

L: 0.281 secs

R: 2.4 secs

G: 1.1 secs

B: 1.5 secs

Each channel was stacked separately (roughly 10/20 images for channel).

My very first deep sky image

After missing it the first time, the Aurora came back, visible even here in southern England.I managed to grab an almost night long timelapse, with a few selected highlights.
I used the "revisions" mechanism to upload 3 different frames, but please check out the [url=https://www.youtube.com/watch?v=4Z3GD9sv2nc]full timelapse[/url] as well.

Wide field shot of the Milky Way around Aquila. Altair is clearly visible in the field.

The region around Deneb and Sadr, in the Cygnus constellation.

Full of stars and nebulosity, given it's special position in the middle of the Milky Way, this picture features many of them, like the North America, Pelican, Gamma Cyg Nebula, Crescent.

Blog article: [url=http://blog.gulinux.net/blog/2017-06-20-cygnus-heart]http://blog.gulinux.net/blog/2017-06-20-cygnus-heart[/url]