New Official Video Tutorial Series

[Juan Conejero]

Hi everybody,

I'm pleased to announce a new series of official PixInsight video tutorials that we are producing. The first instalment of this series is a processing example by Vicent Peris, with an LRGB image of NGC 1808 acquired by Jack Harvey and Steven Mazlin (SSRO). You can watch the two parts of this tutorial in HD720p format on our website:

http://pixinsight.com/videos/NGC1808LRGB-vperis/en.html

If you have watched other video tutorials previously on our website, you may need to refresh your browser to reload some modified site components. The videos are in QuickTime format, so you may need an additional plugin for your browser if you are a FreeBSD, Linux or Windows user. These videos will also be available on our YouTube channel very soon (but at lower quality and resolution).

We are investing a lot of resources into producing new video tutorials with this quality level (or better). From now on you can expect more tutorials coming, covering practical use of PixInsight's interface, standard tools, processing examples from introductory to advanced levels, and many more exciting topics. I hope you like it!

[Nocturnal]

Looks really promising, I'll have a look soon!

[Alejandro Tombolini]

What to say, fantastic videos! very good audio an excellent quality.

It was a pleasure to see both. Congratulations

When using DBE, if I have both effects (moon and some vignetting)
how to decide which background correction is better, sustraction or division?   

Saludos.
Alejandro.

[vicent_peris]

What to say, fantastic videos! very good audio an excellent quality.

It was a pleasure to see both. Congratulations

Hi Alejandro, thank you very much.

When using DBE, if I have both effects (moon and some vignetting)
how to decide which background correction is better, sustraction or division?

In this case, you cannot completely correct any of them I will choose the option depending on the intensity of each gradient. If you multiplicative gradient is stronger than the additive one, then choose a multiplicative correction; and viceversa.

We are now working on other photometry-based techniques for gradient correction. These are based on observational techniques -basically you will need three exposures with a large orthogonal dithering-. The main advantage is that you can make the gradient correction even if you have diffuse object in the whole FOV. Moreover, these techniques will correct both additive and multiplicative gradients (if they don't vary from image to image, of course).


Regards,
Vicent.

[dayers]

Many thanks for these high quality tutorials. Already they are plugging many gaps in my understanding of the use or the tools covered. Excellent!

Dave

[Enzo De Bernardini]

Amazing production! Straight to my collection. Definitely it will be very interesting. I will watch for new publications.

Thank you very much!

Enzo.

[Harry page]

Hi

very well made and produced , people will love them 

Harry

I don't like the lift music though    IMO of course

[oldwexi]

Thanks for these 2 beautiful and informative videos.
Both brought a lot of new informations how to handle different image processing issues
with PI.
I like it!

Aloha
Gerald

[Juan Conejero]

Thank you to everyone for the warm reception to this new video tutorial series. Both parts of this tutorial are now available also at PixInsight Studios, our official YouTube channel:

http://www.youtube.com/user/PixInsight

Here are direct links:

Part 1: http://www.youtube.com/watch?v=zqhLKIjGMXA
Part 2: http://www.youtube.com/watch?v=knKTsNfohzg

Steve Allan (Catanonia) has kindly given us permission to upload his supermosaic video to our YouTube channel:

http://www.youtube.com/watch?v=H2r3ZYqCaP8

I hope this will help increasing visibility of this learning material.

[Luigi]

I must say that these videos were extremely well done. I've watched both several times. What is most interesting are the bits of information seemingly 'interjected' into the narration that gave me an 'a-ha' moment. Maybe after several more times I'll 'get' the stuff that I still do not understand (like the Lab color spaces, for example).

Please, keep these coming.

[vicent_peris]

Hi!

We have just uploaded the raw data from the authors of the image (Jack Harvey and Steve Mazlin) as well as a process icon set. Please reload the video tutorial webpage in order to get the links to the ZIP file.

All the process icons have embedded comments that describe the function of the parameters used in each instance. This can be very helpful if you want to practice with them without playing the video tutorial.

I'm very happy to know that these tutorials are helpful for you. More is coming!
Best regards,
Vicent.

[Nocturnal]

That female narrator sounds familiar. Did you guys really farm out the narration to a professional? Sure sounds a lot better than Alex (speech synth)

One comment (haven't viewed the whole thing yet): you should leave slides up a little longer so they can actually be read. Test this with people who did not write the slides. Preferably use a non-native speaker or have someone read it out loud to time how long the slide should stay up. It is true the video can be paused of course.

[Nocturnal]

More comments:

part1, around 2:30: "linear images have too much contrast to display on the screen". Really? I thought it was too much dynamic range. If anything the image lacks contrast.

2:40: interesting how the demo show that the process explorer does not collapse after selecting the STF. The user has to grab the STF window to make the PE disappear and bring the image windows back to the front. I find this a bit annoying, especially with a dynamic tool like dynamic crop. Later on the same thing happens with DBE. The user fiddles with the dialog which really shouldn't be needed.

I think you used this voice: http://www.golocalise.com/en/our-voices/english-us/kim

I think the text was a lot less 'wooly' then earlier videos and that's great. Of course there were still some PixInsight-isms like "special chrominance noise reduction algorithm that works quite efficiently to palliate these problems". I think that should simply say "special chrominance noise reduction algorithm (could substitute 'option' or 'method') that counters (or reduces) this problem".

Overall these videos were great. Congrats to the team! You should be real proud. I'll spread the word.

[Josh Lake]

Amazing tutorials, thank you. I learned all my basics from Harry and from Vicent's NEAIC session, but these videos are really starting to make me understand the process at a deeper level.

I too found the narration to be amusing -- I'm not sure if it's true or not, but it sounded like a professional voice-over narrator who knew nothing about PI but knew how to read technical language very well.

Keep them coming! I'd be very curious to see this kind of treatment on a field rich with nebulae (as opposed to a galaxy).

[Josh Lake]

Hi!

We have just uploaded the raw data from the authors of the image (Jack Harvey and Steve Mazlin) as well as a process icon set. Please reload the video tutorial webpage in order to get the links to the ZIP file.

All the process icons have embedded comments that describe the function of the parameters used in each instance. This can be very helpful if you want to practice with them without playing the video tutorial.

I'm very happy to know that these tutorials are helpful for you. More is coming!
Best regards,
Vicent.

Thanks for posting these, too. One thing I noted is that on lower resolution monitors (my laptop), the Process Icons appear so far to the right that they're hidden. I found them by scrolling, but it might throw someone off who was new to PI. In the future, you might want to save the icon set within a 1200 px width (I'm at 1440, so you must be using a really big or high-res monitor!).