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Forum » SpaceEngine » Science and Astronomy Discussions » Astrophotography (Post your astrophotos here)
Astrophotography
WatsisnameDate: Wednesday, 21.10.2015, 09:18 | Message # 526
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M45 is a surprisingly difficult target for capturing nebulosity. Your results are already quite good! :)

Thoughts and suggestions:

You did lose a lot of color information somewhere along the way. The image is almost completely desaturated. Stars should be brilliantly blue. Consider your white balancing first: a good technique is to increase the saturation to full, then affect color temperature until the image is essentially half blue and half red/orange. Don't actually perform this change; increasing the saturation is just a visual aid for determining what the correct WB setting is. Change saturation or do other color manipulations later.

As for not getting much nebulosity, don't be surprised. I'm actually impressed that you got any of it. Your biggest challenge is the lack of a tracking mount, so you have short exposure times. Darkness of the sky matters, too. But, you might be able to get more from your image processing, especially with curve stretching. There's a lot of hidden detail you can pull out from a processed image stack, especially with well calibrated frames. So look into tutorials, see if other techniques might get more detail out of your data.

Tutorials I can recommend:
Frame Calibration
Lonely Speck (processing techniques with Photoshop and Lightroom)

Hope that helps!





 
pzampellaDate: Wednesday, 21.10.2015, 18:44 | Message # 527
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Watsisname, Thank you very much for your help! I'll use those tutorials to see if it helps!
About the color: I searched online and found out that when I post-process the final stacked image on DeepSpaceStacker, the software 'cuts' the color and leaves it black and white. However, when I open the final image, without changes, on Photoshop, it turns really green! Any idea of what am I doing wrong and how can I fix it? Thanks!
 
midtskogenDate: Friday, 23.10.2015, 06:24 | Message # 528
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Venus, Mars and Jupiter are nicely aligned right now. The image below is a single frame from a video recording, so the quality isn't that much, but it's a calibrated camera so I could easily add a grid to show how close they are.

It was taken 03:32 UTC today.

Attachments: 6431605.jpg(207Kb)





NIL DIFFICILE VOLENTI
 
WatsisnameDate: Friday, 23.10.2015, 07:40 | Message # 529
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pzampella, what kind of file is it being exporting it as? Is it a .fits? Sometimes image editors incorrectly interpret the color channel information with the default settings for opening that file type. Try checking the image mode and color channels manually.




 
pzampellaDate: Friday, 23.10.2015, 18:42 | Message # 530
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Watsisname, I used raw files (.cr2) and saved the result as a .tif
 
midtskogenDate: Thursday, 05.11.2015, 20:33 | Message # 531
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The Taurids (the southern and northern) are active. Here are some pics of Taurids taken over the past week.





NIL DIFFICILE VOLENTI
 
WatsisnameDate: Saturday, 07.11.2015, 23:57 | Message # 532
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Nice ones! No chance for me seeing them of late; cloud season is in full force.




 
pzampellaDate: Sunday, 08.11.2015, 17:05 | Message # 533
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A couple pics I took 3 days ago from Caracas, Venezuela: Orion's Belt and Orion's Nebula in detail. I'll keep trying to improve my technique.


40x4s shots at 6400ISO


100x1s shot at 6400ISO

Attachments: 5285770.jpg(536Kb) · 1785743.jpg(549Kb)


Edited by pzampella - Thursday, 12.11.2015, 15:04
 
WatsisnameDate: Monday, 09.11.2015, 06:19 | Message # 534
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Wow, these are superb, especially the close-up! You've gotten really good. smile

One suggestion might be to try taking another set of images with the same exposure but lower ISO, to get the brighter details at the center that are being blown out here at 6400. Then blend those sets together to make an HDR-like image.





 
pzampellaDate: Monday, 09.11.2015, 15:46 | Message # 535
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Watsisname, that's in fact a really good idea! However, I blown up those details in post-processing so I could get more nebulisity. I'll try doing that now.
 
WatsisnameDate: Tuesday, 10.11.2015, 07:15 | Message # 536
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I see your edit; really nice work! cool




 
pzampellaDate: Tuesday, 10.11.2015, 17:24 | Message # 537
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Watsisname, I used the same images, but protected the nebula using masks.
 
midtskogenDate: Sunday, 22.11.2015, 20:01 | Message # 538
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I found this pair of photos interesting. We see the same Taurid, taken tonight, from two different locations. First from the side:


Then almost head on:


In the second shot the meteor is going upwards in the sky and seem to increase in speed. To better see how, here's a map showing the two locations (OSL and KRI):





NIL DIFFICILE VOLENTI


Edited by midtskogen - Sunday, 22.11.2015, 20:01
 
steeljaw354Date: Tuesday, 08.12.2015, 11:29 | Message # 539
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Uranus and neptune
Attachments: 3373238.jpe(13Kb) · 3278209.jpe(2Kb)


Edited by steeljaw354 - Tuesday, 08.12.2015, 11:31
 
WatsisnameDate: Wednesday, 09.12.2015, 00:22 | Message # 540
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Impressive! What's your equipment? smile




 
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