What's with all the spikes in JWST images of stars?

So i am Not imagining things

Please check this thread

Last Edited by FHL(C) on 08/30/2022 09:10 AM

Thread: Star has doubled in size and magnitude over one month

I have started taking black and white shots. When next month roll's round i will send this batch and them to you for assessment. If that is ok

I don't think you understood what this video was about and what it showed?

nice experiment Astro... 5*

Its difficult to see your video with out a v n great fire wall and all that

I'd give you green for doing this simple experiment, but you're a mod and your bar is already full, so I couldn't be bothered!

mega size astigmatism. LOL.

Or:

Holy giant double slit experiment, Batman!

I don't quite understand what they mean? Are they saying its a natural thing or that it has to do with a kind of distortion flaw in their equipment?

Because you had to use a mask to duplicate it.

To me that is not showing the real world.

And Vega unspiked, just the star, that is one beautiful star. One of my favorites, also its one of the few I can step out in the summer and see.

We have the Big Dipper starting just behind and above our house, and Draco, to the West slightly in our front yard the Cassiopian M or W, can't remember which. Can't see some of the constellations I saw in Chilliwick. Don't know where Orion's belt is from here.

Or Pleiades.

And too afraid of bears to get my telescope out and learn to use it. We have them on the property from time to time.

I like the big blue stars myself. And the one like our stars, golden ones.

Anyway I wish they'd stop using techs that distort things, if thats what this is!

Also tech that blends out details, renders things, that is also distortion.

My telescope has a circular primary mirror, not a series of hexagonal mirror segments. I modeled the mask directly on the shape of JWST's optics to duplicate what those optics would experience just because of their shape. That's all the mask does, shape the incoming light to match the shape of the JWST optics.

Why not? It's showing you the natural optical performance of a scope if it were shaped like JWST.

No idea what you're talking about.

So they're saying they're using higher grade tech and the spikes are natural?

Because that's why I asked, if it was a distortion and the more diffuse light you showed without the filter was a more realistic capture or if theirs was higher grade?


And what I mean is old fashioned equipment sometimes picks up details that our programmed eyes don't see. We see in a limited spectrum, some of the older camera's saw more.

Then came digital and rendering, blending and smoothing out details and some of the good stuff, is in the details, they're not just artificts.


And yes I knew you had come up with a filter to duplicate their equipment.

I was amazed you knew how to do that, did you use a program or does your mind work in geometry and physics?

Put me in the same category.

So, folks are not seeing these stars with the naked eye, it's just the JWST? I'm assuming that's the latest and greatest telescope we put in orbit. Sorry for my ignorance...

Last Edited by FeedYourHead on 08/30/2022 10:17 AM

Good job Astro, well done........just like using a Bahtinov mask!!

Thoughts?

Does the data from the new telescope support the Standard Model or reveal an Electric Universe?

Nice experiment and thanks for the education.

I'm saying the diffraction spikes are a natural consequence of the shape of the optics. The optics are shaped that way so that the telescope could be folded up to fit within the fairing of the rocket that launched it. I still don't understand what you mean regarding "blending and smoothing," NASA makes the raw FITS files available, the raw pixel counts. There is no blending or smoothing there. And yes, JWST sees pretty much exclusively light that our eyes cannot see, infrared. But regardless of the infrared nature of the images, the physics driving the diffraction spikes is the same. I wanted to see if I could re-create it by modeling a mask for my scope so that it would be as if my scope's mirror was made of hexagonal segments with a 3 arm support structure holding the secondary mirror. My secondary mirror is larger so I had to make the cutout for it larger than JWST, but this had minimal impact on the final result.

That is a great effect.

5 stars astro!

You call yourself an astronomer..... just kidding... They are diffraction spikes caused by the shape of the optics. :).

Yes, but do you think that means that the tech is creating an illusion, or the tech is really good and this is close to reality?

The blending and smoothing. This was a nu. of years ago, there was actually threads and articles about the more advanced and expensive camera's rendered, ie smoothed out, blended together, the photos. But if for ex. you are wanting to scan a photo on the moon, you probably don't want every artifact rendered and blended and smoothed out to make a good high resolution picture postcard image, you want to see very little shape and anamoly.

That's what I am trying to say.

There is the telescope AND the setup with the camera.

So doesn't that make 2 items that could interfere with precise accurate images?

Last Edited by Sungaze_At_Dawn on 08/30/2022 10:39 AM

The diffraction spikes are a natural consequence of the shape of the optics. I don't know how else to say it. Diffraction is reality, it's also caused by the shape of the optics.

Are you talking about image stacking? That's where you average the pixel counts across multiple exposures to increase the signal to noise ratio. You made it sound like an artist smoothing or blending things in an image artificially. It's not like that. It works for the moon as well. The things that are common across exposures, the actual object or objects being photographed, remain the same and the random noise changes randomly and is averaged out.

Last Edited by Astromut on 08/30/2022 10:43 AM

With the telescope that's been in our closet all this time, and kids who won't come out when its dark, I just took a look at this.

My interests would be camera's for astro photography if and and also for full spectrum and more sky watching for ufology, both are interesting to me.

And I always envisioned a set up with camera, and old laptop.

I didn't envision that you could be inside the house with the telescope outside, that didn't even occur to me.



This was what I was always trying to get my boys to get into, like a family project and for them to gain some skills.

They weren't interested, I always felt disappointed. Especially the part about grinding your own mirrors.



Last Edited by Sungaze_At_Dawn on 08/30/2022 11:21 AM

ldsudkmoaikasdmfoiwefnsdflk star and galaxy ldik. The yexslil. bcddoe.

Very nice work Astro. Nice way to prove it's the optics and not some filter.

The spikes do look like a photoshop effect because it's a common pattern in graphic design for star effects.

I guess the test I’d want to try next is to move the supports for the secondary mirror ten degrees to see if it would produce nine spikes.

https://imgur.com/YC3RjgL

The array of 6 sided mirrors is the basic underlying cause of the light patterns on images...

It's an inherent part of that particular optical design...?

Most lenses cause a star pattern (4 sided).

(mirror/lens)

Last Edited by Mr. Chimpington on 08/30/2022 02:13 PM

hmmmmmm... I'm thinking back to what you said when I asked that question weeks ago.

This is an answer. Finally!

Damn I'm glad to see astro posting, it feels like old school glp... got any nibiru updates for us?

What do you mean "finally?" I put you in your place months ago on this, I just hadn't had time to make a video out of it until now.
Thread: NASA shares spectacular 'teaser' image captured by its James Webb Space Telescope – ahead of the eagerly-awaited release of its first
Thread: NASA shares spectacular 'teaser' image captured by its James Webb Space Telescope – ahead of the eagerly-awaited release of its first (Page 5)

Last Edited by Astromut on 08/30/2022 02:41 PM