bistdunarrisch @ bistdunarrisch @lemmy.world

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1 yr. ago

The comet is also visible on one single exposure as it is very bright. It was also visible to the naked eye. But stacking reveals even more details because it improves the signal to noise ratio. Also stacking helps removing unwanted objects like satellite trails, planes or moving clouds.

Thanks!

I use uYou plus. It has to be installed via Altstore (which means you have to resign it once a week with a computer needed in the same network).

But it has the best features:

• Adblock
• Sponsorblock (automatically skips sponsor segments in videos)
• allows pip playback
• shows estimated dislikes again

Dank dem Gesetz haben wir nun endlich auch ein BKW. Unsere Hausverwaltung hat in der Eigentümerversammlung angekündigt, dass ein Ablehnen in Zukunft nicht mehr möglich sein wird, und so konnten alle Parteien überzeugt werden. War trotzdem ein langer Kampf, und ohne diesem Gesetz unmöglich.

Ich hoffe das wird vielen anderen genauso helfen.

Thanks for sharing! The software worked better than expected on your image!

On my research before purchasing the program I also stumbled over your linked forum post. However I found it very misleading, as the software does not generate details learned from other images but only works with data already in your image. As it is a deconvolution tool results can deviate slightly from the true nature. But that has little to do with AI being used here. I needed a whole semester at university to truly understand the maths behind it. My biggest problem is that the software isn't open source so one can't look into all the details. But there are already people working on open alternatives.

But this already is a very specific problem, don't forget that the biggest difference for good quality makes the data itself. I wish best of luck on your journey!

Oh and I forgot to mention that one other advice I would give is to search the darkest location to shoot from that you can access. Lightpollutionmap really helps with finding such places.

Edit: unstreched file with only background extraction and deconvolution: https://drive.proton.me/urls/QD4870ZMF4#uyVBYxKgWxgb

For untracked this looks not too bad. To improve I would do the following:

• in Siril: remove green noise, then photometric colour calibration
• reduce exposure length to 1s
• work on background extraction (maybe try GraXpert)
• if you are not already doing: take calibration frames, especially flats

Are you interested in sharing the raw stacked file? I use a (paid) deconvolution tool called BlurXterminator and I wonder if it can handle such extreme star shapes. If it works I will of course send you the file.

In amateur astrophotography narrowband filters are used to reveal interstellar ionized gas clouds. In this case you can see hydrogen nebulae as red blobs in the spiral arms around M31.

Well for the high cost, apart from producing them is technologically challenging, it is just simple economics. The market for these filters is still small compared to other things, so the price must be higher to compensate production and development.

Tl;DR The EU makes sure that third party developers gain access to connectivity features to develop devices like smartwatches, headphones or VR headsets that have a deep integration to the OS.

It is crucial that the request process is transparent, timely, and fair so that all developers have an effective and predictable path to interoperability and are enabled to innovate.

Thanks!

No not for this target. As I use a dual narrowband filter I‘ll always get OIII as well, but as you said in this case it just shows the normal continuum. I shot this data to combine it with RGB in the future, but I liked how M31 looks with just narrowband so I wanted to share anyway.

The equipment put together:

I couldn’t agree more, thank you for sharing so much information!

We were in exactly the same situation and bought a Fuji camera. We are very happy with our decision as we can shoot both 'normal' photography with the feeling of a nice camera body and astrophotography on a beginner level.

The results we got so far exceeded our expectations by far, we posted some of our images here in this sub or here in full resolution .

One thing to keep in mind is that normal cameras block most of the infrared light, which makes it unsuitable for shooting hydrogen nebulae. That's a minor reason why we eventually chose a Fuji camera, as they filter a bit less infrared than other brands.

In the end the biggest impact makes the lens/telescope. After a lot of research we chose the Samyang/ Rokinon 135mm f2.0 lens. Also we found it very rewarding shooting with such a 'small' focal length because it forgives minor inaccuracies while giving very good results.

For us the biggest reasons for this hobby are to experience the night sky with our own equipment and learning very much (about physics, processing the data, cameras, ...). Both things can be achieved with modest equipment and I would keep that in mind when comparing own images with others. Also I personally love the challenge to get the best possible results with things you already have.

Hope that helped a bit.

Full resolution image and more details here

Also this is what our setup looks like to shoot such an image:

Also this is a 3d animation of our setup used to shoot this image:

I can recommend this online telescope simulator where you can simulate the field of view with your equipment. Your 300mm lens should be absolutely perfect

This lens is incredibly sharp and produces nearly no coma. Also the image is super flat and the lens also works for full frame cameras. For its high image quality it‘s also used by some more advanced astrophotographers.

As I bought it new for 400€ this was a no brainer because we can also use it for 'normal' photography.

I‘m sure your lens works well for many nebulae!

Thank you! Andromeda is way bigger than most people think. That’s the reason why it is a very (maybe the most) popular target for beginners. Also there went a lot of processing into the image, so don’t let the image deceive you from the actual conditions where I live (Bortle 5 zone)

The lens is the telescope in this case. But as the focal length of 135mm is fairly short it works best for objects appearing very large in the sky. Astrophotography can get very expensive very quickly, so we try to make the most out of the equipment we have. Just like with the 3d printed mount.

The Samyang 135mm f2.0. In some markets it‘s also called Rokinon