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Astrophotos

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Tweefo
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« on: June 17, 2019, 12:16:34 PM »

Centaurus A https://imgur.com/3oT0mqf
Trifid nebula https://imgur.com/undefined


Lets see if this work.
« Last Edit: June 17, 2019, 12:32:02 PM by Tweefo » Logged
Tweefo
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« Reply #1 on: June 17, 2019, 12:36:54 PM »

Lagoon nebula https://imgur.com/HI2LSnI
Southern pinwheel galaxy https://imgur.com/dwDrjWo
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brianvds
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« Reply #2 on: June 17, 2019, 15:05:34 PM »

Something wrong with the Trifid nebula link. The others work. Nice photos!

Let me quickly try an experiment:

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brianvds
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« Reply #3 on: June 17, 2019, 15:07:20 PM »

There ya go! One has to add a ".jpg" behind the link, and then put the whole thing inside img tags. As you can see, it creates a new problem: your originals are HUGE, which makes for awkward viewing.
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Mefiante
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« Reply #4 on: June 17, 2019, 17:21:27 PM »

Or, you can add a “width=X” (or “height=X” attribute, or both) to the “img” BB code tag (“X” is the width/height in pixels) so that the image(s) fit(s) nicely on the page.  The applicable BB code is:
Code:
[img width=600]https://i.imgur.com/3oT0mqf.jpg[/img]

[img width=600]https://i.imgur.com/HI2LSnI.jpg[/img]

[img width=600]https://i.imgur.com/dwDrjWo.jpg[/img]

The above code renders like this:






@Tweefo:  Nice pictures, indeed!  You might want to copy the above example code into a text file on your desktop for easy future reference/reverence.

'Luthon64
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BoogieMonster
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« Reply #5 on: June 17, 2019, 21:58:23 PM »

Yay! Great photos tweefo.
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Rigil Kent
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« Reply #6 on: June 24, 2019, 10:43:10 AM »

Super pics Tweefo!  Cool, especially your capture of Centaurus A. The dust lane looks to my eyes quite a bit like a femur, complete with ball joint. Incidentally, I offer five virtual jellybeans to the reader who can spot why the name "femur galaxy" may well be more apt than the current "hamburger galaxy".
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BoogieMonster
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« Reply #7 on: June 24, 2019, 15:08:15 PM »

Sorry to hijack. But here's footage of a 40-hour long plasma tornado on the surface of the sun:

https://i.imgur.com/mLYfKid.gifv
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Tweefo
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« Reply #8 on: June 25, 2019, 15:30:01 PM »

[url width=600]https://imgur.com/NobIJd8[/url]
No, call me stupid but I don't get it. The trifid last night if you can figure it out.
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BoogieMonster
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« Reply #9 on: June 25, 2019, 15:53:15 PM »

Code:
[img width=600]https://imgur.com/NobIJd8.jpg[/img]



@Tweefo: Note the "img" instead of "url", and ".jpg" added to the link.
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Tweefo
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« Reply #10 on: June 25, 2019, 16:27:23 PM »

Thanks, maybe I'll get it one day...
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Tweefo
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« Reply #11 on: June 25, 2019, 16:47:04 PM »


My first try at the Eagle Nebula. It was very cold out there and I just tried it to see what would come out, so this is a stack of only 7 photos. (normally it's 50 to 200 that one stack.) I also have a problem with a cable so the guiding did not work well. 
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Tweefo
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« Reply #12 on: June 26, 2019, 06:01:44 AM »

Seems that the process to post a picture here, through imgur, introduce a bit more noise. Same with the Facebook-posts pics they are not the same as the originals. I must also say again that these last two pics were not the best ever.
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Mefiante
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« Reply #13 on: June 26, 2019, 08:14:56 AM »

Seems that the process to post a picture here, through imgur, introduce a bit more noise. Same with the Facebook-posts pics they are not the same as the originals.
It’s probable that Imgur resamples all uploaded images to lower-quality JPEGs so as to reduce storage space requirements.  The JPEG format is lossy by default, but lossless JPEGs are possible.  One way to test this would be to compare the file size of the original with that of the version hosted by Imgur.  Assuming you’re using MS Internet Explorer, you can download a copy of the Imgur image by right-clicking on it and selecting “Save picture as…” from the popup menu.

'Luthon64
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Tweefo
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« Reply #14 on: July 14, 2019, 09:29:41 AM »

Last night.

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brianvds
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« Reply #15 on: July 14, 2019, 09:43:06 AM »

Great stuff! Now is the perfect time of year for sky viewing - pity you can't do it without freezing solid though. :-)
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Tweefo
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« Reply #16 on: July 14, 2019, 10:11:35 AM »

Great stuff! Now is the perfect time of year for sky viewing - pity you can't do it without freezing solid though. :-)
Long Johns, tracksuit pants and a pair of jeans. Long sleeve vest, T-shirt, 3 jackets. Wool lined hat with ear flaps and one of the jackets got a hoody that goes over the hat. Gloves and 2 pairs of socks in hiking boots. You sit out there for 4 to 5 hours, so it still gets cold.
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BoogieMonster
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« Reply #17 on: July 15, 2019, 13:43:54 PM »

But it is warming up a bit lately. At least around these joburg parts.

Tweefo is astronomy geek Jesus: He froze for our grins.
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brianvds
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« Reply #18 on: July 16, 2019, 06:11:36 AM »

But it is warming up a bit lately. At least around these joburg parts.

We haven't had much in the wy of winter yet, though I'm told there's a cold front on its way. After the summer we had, I was hoping for positively arctic weather, but alas, global warming seems to have kicked in now.

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Tweefo is astronomy geek Jesus: He froze for our grins.

He looks slightly older than his early thirties; I must assume he has managed to avoid the wrath of established interests thus far.

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Tweefo
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« Reply #19 on: July 24, 2019, 12:06:06 PM »

Sitting through the cold the last few nights. M16, M17 and the Cat's Paw nebulas. The last one did not come out well and need more data I think. Actually, all of them will do well with more. I will work on that tonight if the wind is not too strong.



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Tweefo
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« Reply #20 on: July 27, 2019, 15:02:46 PM »

The Eagle nebula is a bit clearer. I took more photos at a higher ISO and added them to the other day's pics.
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Tweefo
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« Reply #21 on: July 28, 2019, 14:21:49 PM »

My best Trifid nebula so far. 50 Exposures of 120 seconds each at ISO 800. The object is now high in the early evening. All my previous attempts were through a thicker part of the atmosphere.
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Tweefo
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« Reply #22 on: August 04, 2019, 18:17:20 PM »

Trifid again but here I combined two evenings data.

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brianvds
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« Reply #23 on: August 05, 2019, 02:48:40 AM »

They're getting better and better!
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Tweefo
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« Reply #24 on: August 29, 2019, 13:55:19 PM »

Two very bad pictures of M27 or the Dumbbell nebula. Last night, 39 photos of 120 seconds stacked in an App called Nebulosity. A few tweaks in Photoshop to no avail. Take me out the back now before I do more damage.


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Tweefo
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« Reply #25 on: October 27, 2019, 03:00:09 AM »

This image of M42 took me from 12:30 to 3 am on Wednesday night to do the imaging. I took 50 pics but only used 17 in the end, so this is about 38 minutes worth of data.
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brianvds
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« Reply #26 on: October 27, 2019, 04:31:30 AM »

That one came out rather nice! :-)
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Tweefo
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« Reply #27 on: October 30, 2019, 17:11:02 PM »

NGC 253 or the Sculptor galaxy. Also called the Silver Dollar galaxy. Far too much noise. This astrophotography comes with a very steep learning curve. WTF!!

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Tweefo
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« Reply #28 on: November 01, 2019, 11:50:29 AM »

The Tarantula nebula. This is almost 3 hours of data taken over two nights from my backyard. According to the Bortle light-pollution scale, Middelburg rates at 5-6. It came out rather colourless. When I took pictures from a dark site in the Freestate, I got lovely green tones, and that was with only 40 minutes of data.  Looks like I need another 3 hours to add to this.

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BoogieMonster
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« Reply #29 on: November 01, 2019, 12:56:28 PM »

NGC 253 or the Sculptor galaxy. Also called the Silver Dollar galaxy. Far too much noise. This astrophotography comes with a very steep learning curve. WTF!!



Nothing short of astounding really... that we can "directly" observe such immensity.
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Tweefo
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« Reply #30 on: November 02, 2019, 07:26:39 AM »

Here I've done a better job with the Tarantula.

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Tweefo
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« Reply #31 on: November 17, 2019, 06:44:15 AM »

NGC 346 in the Small Magellanic Cloud.

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Tweefo
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« Reply #32 on: December 04, 2019, 07:15:16 AM »

Running man nebula. 2.2 hours of data taken over two nights. Need more data, still a bit grainy.

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BoogieMonster
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« Reply #33 on: December 04, 2019, 09:48:26 AM »

I've just realised these are high res and I can copy the URL with right-click, paste into a new tab, to get the beeeeg version. Very nice.

Tweefo, we don't deserve you.
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Rigil Kent
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« Reply #34 on: December 04, 2019, 11:07:29 AM »

Fantastiese foto. Voorwaar 'n produk van baie gedult en vaardigheid.
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Tweefo
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« Reply #35 on: December 05, 2019, 05:48:09 AM »

Thank you for the compliments. This was/is for me a very steep learning curve. Looks like I have mastered the basics now, but there are still some disasters where I just have to delete a whole evening's data.
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