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I am a software engineer, working with , ( ). In my free time I do and . I will be posting the photos I take with my telesope here.

I care about , , , and


In the lower left corner is also the very faint "soap" nebula, which was only recently discovered (2008) by another hobby astronomer. It only shows up on the O-III data, meaning it is solely made up of oxygen.

This was taken with:
- QHY163m
- Baader 7nm Ha filter
- Astronomik O-III 8nm filter
- RC8" @1125mm f/5.5
- 32h total exposure time, 8h per panel, 4h per channel (Ha and OIII)
- Losmandy G11

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This kind of palette is also called the HOO (analog to RGB) palette, and is used by astronomers to see where and which gases are in a nebula.

The fainter red nebula structures in the background are hydrogen structures inside the galaxy.

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And here is the final result of my 2x2 mosaic, 32h of total exposure time (taken over 11 nights)!

The photo is a -color . The red channel of this RGB photo is H-a (Hydrogen-Alpha). Meaning the brighter the red color on a pixel is, the more hydrogen there is at that location. The blue and green (teal) channel are O-III (oxygen). These chemical elements can be filtered with special light filters (narrowband filters).


Currently working on a new of NGC6888 in and found this very faint bubble nebula in my O-III (oxygen emission line) data.

Strange thing is it does not appear on my H-a data.

First thought it could be an artifact from the optics, however, after some resarch this is actually a newsly (2008) discovered nebula (discovered by an amateur astronomer too!)

Quite amazed by what my telescope can pick up.

The mosaic will be 240MP when it's finished

Just switched over from to

Really liking the minimalistic and systemd free system. Runs with even less stuff in the background than my arch install used to run with.

Also going to switch my surface book and my debian server to void


Sorry I mean SDSS are Quasars, not Pulsars, quite the difference 😅

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For the people wondering, this photo was taken using a RC8" (Ritchey Chretien) telescope at 1125mm focal length and f5.5.
Camera: QHY163m
Filters: Baader LRGB (36mm)
Mount: Losmandy G11
Off-Axis-Guider: ASI ZWO 224mc

Integration times:
L 180x60", RGB 60x60" each
total exposure time 6h

Also you can find the annotated image attached to see all the galaxies in there (there are even a few more). SDSS are Pulsars

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Finally got around to finishing my ! Took quite a lot of learning to edit LRGB (monochrome) photos for the first time.

Here it is: The HCG68 and NGC5371

There are quite a few very distant and small galaxies in this photo, can you spot them?

The galaxies that belong to HCG68 (the biggest ones visible) are at a distance of roughly 110 million light years from earth.


My first from last night.
The target is the MCG 68.

This is a single 60s exposure using the Luminance filter.

Left it running over night and went to sleep, in the hopes it would continue photographing. However, it stopped after around an hour, due to auto guiding procedure failure. Still need to finetune some settings.


Got some cable management done on my . Also installed a new auto focuser (the other one kept falling apart, trying to get a refund). The new auto focuser is the sesto senso 2, seems much better quality than my old one so far.

Also installed a new better off-axis guider prism and a (manual) camera rotator.

Waiting for clear skies :D

Just cleaned all my for my mono chrome and installed my new O-III filter.

New coming soon, busy setting everything up and tinkering with the .

Hello everybody, trying out the new groups :D

I am an astrophotographer, taking photos of deep space with a .

Attached one of my latest photos (the cygnus wall, or NGC7000)

Finally getting my O-III narrow band filter. Only took almost 1 year 😆

Baader seems unable to ship the O-III filter (ordered it back in last year april). Getting an Astronomik O-III filter now instead.

Since I already have a Baader Ha and a Baader S-II filter the new O-III filter won't b e parfocal, meaning I will have to measure focus offsets.

Which narrow band filters do you prefer?

A with my "old" Schmidt-Cassagrain (Celestron C8) and the "new" Ritchey-Chretien "TS Optics RC 8")
The new RC telescope is a lot sharper and a lot more detail can be seen, given the same exposure time.

The nebula in the photo is the crescent nebula (or NGC 6888)


Visible in this image is also the Grand Valley on Mars, which was used to be believed to be an ocean of water in the earlier days of astronomy.

The photo was shot at ~6100mm focal length, with a Celestron C8 SCT and a 3x barlow lense, using an ASI 224mc as

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from two days ago

Imaging planets isn't as most believe. This photo is actually the result of 5000 photos being combined into one.
For this a technique called "lucky imaging" is used.
At these magnification levels seeing (turbulence, ...) causes Mars to just look like a red blob. The software can then take the best of those 5000 photos to reconstruct the details lost because of the atmosphere.

Currently busy editing my newest photo (of the M74).

This is the combined stack of 105x60s exposures with the L (= Luminance) filter, basically a monochrome photograph used to enhanced contrast and detail in RGB photos.

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