Search found 373 matches

by Wah
Mon Jun 01, 2020 11:38 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Quick first light
Replies: 4
Views: 396

Re: Quick first light

Yes, this is from a new all-in-one SHG, with longer focal length than before. Hope it can give better spectral resolution.
by Wah
Mon Jun 01, 2020 12:41 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Coming back...
Replies: 42
Views: 2187

Re: Coming back...

You may compress and upload the file to google drive or dropbox and let me have a try.
by Wah
Sun May 31, 2020 11:51 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Quick first light
Replies: 4
Views: 396

Quick first light

This is a quick first light in the morning before going to work.
by Wah
Sun May 31, 2020 11:48 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Coming back...
Replies: 42
Views: 2187

Re: Coming back...

What error did it show? Or it never prompt error when the file is over 3GB?
by Wah
Sun May 31, 2020 4:17 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Coming back...
Replies: 42
Views: 2187

Re: Coming back...

Which file format and what size do you need?
As far as I remember, I was using an external library for avi format which cannot handle larger size files.
Then a newer version could handle mono-color ser files without problems (I guess).
by Wah
Fri May 29, 2020 1:13 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Coming back...
Replies: 42
Views: 2187

Coming back...

After a long leave, I am now redesigning the spectroscopes and creating the parts by using a 3D printer.
Some optical glass slits have been used also, I hope the overall image quality can be improved.
by Wah
Wed May 20, 2020 6:47 am
Forum: Solar Scope Modifications
Topic: Coronado PST Etalon tuning anti-slip bearing modification
Replies: 18
Views: 4510

Re: Coronado PST Etalon tuning anti-slip bearing modification

The PST uses compression tuning. The Teflon ring in the chamber is the main point of pressure. The silicone ring ( the orange foam) is designed to smash the etalon until it comes into tune. Since it never compresses evenly the silicone ring is trimmed and cut so that it applies pressure as evenly a...
by Wah
Fri May 15, 2020 3:13 am
Forum: Solar Astronomy Shop and Swap
Topic: LARGE diffraction grating 20g/mm
Replies: 0
Views: 604

LARGE diffraction grating 20g/mm

Two pieces of LARGE diffraction grating 20g/mm, about 10x10cm, with transparent protection covers.
Not sure how to use them, I guess they are Echelle gratings.
$50/piece + shipping
Sold as is.

Thank you all!
by Wah
Thu Sep 27, 2018 3:39 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: 08Aug Disk: Spectral sweep through H-alpha.
Replies: 11
Views: 4322

Re: 08Aug Disk: Spectral sweep through H-alpha.

Wow~!!! Really very high resolution images!!!!! :shock: :shock: :shock:

Do you have more information about the equipment? Thanks!
by Wah
Wed Jan 24, 2018 4:07 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Some Natural Spectroscopy!
Replies: 9
Views: 3742

Re: Some Natural Spectroscopy!

I can see the Ha line!
Just kidding :P
by Wah
Wed Dec 06, 2017 8:52 am
Forum: Great American Solar Eclipse August 21 2017
Topic: Wah!'s solar eclipse photos
Replies: 22
Views: 7368

Re: Wah!'s solar eclipse photos

Congratulation for this wonderfull set of images. They are beautifully processed. Do you have a full resolution version of this image ? https://solarchatforum.com/download/file.php?id=29184 I am working with the French Astrophysical Institute of Paris, and I would like to check some details I have ...
by Wah
Wed Dec 06, 2017 8:50 am
Forum: Great American Solar Eclipse August 21 2017
Topic: Wah!'s solar eclipse photos
Replies: 22
Views: 7368

Re: Wah!'s solar eclipse photos

Amazing what you have accomplished, Wah! Your latest result is easily as good as Druckmuller’s famous pictures. Your Photoshop technique seems related to some of the multiresolution wavelet sharpening methods available in some image processing routines. Have you tried any of these? Cheers. Peter. I...
by Wah
Wed Oct 25, 2017 6:35 pm
Forum: This is SolarChat !!
Topic: Total Solar Eclipse 2017 my final version
Replies: 13
Views: 2147

Total Solar Eclipse 2017 my final version

Based on Mr. Miloslav Druckmüller's HDR and ACHF method, I processed my images again trying to squeeze all the tiniest details from them, and finally got this final version.

Because this is a final version image, i post it here :lol:
by Wah
Wed Oct 25, 2017 6:31 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Wah!'s solar eclipse photos
Replies: 22
Views: 7368

Re: Wah!'s solar eclipse photos

Based on Mr. Miloslav Druckmüller's HDR and ACHF method, I processed my images again trying to squeeze all the tiniest details from them, and finally got this final version.
by Wah
Sun Oct 08, 2017 4:29 pm
Forum: This is SolarChat !!
Topic: ISS Solar Transit 20171007
Replies: 6
Views: 1264

Re: ISS Solar Transit 20171007

The camera ASI174MM theoretically can have 128fps, but I just could get about 100fps because of drop frames.
by Wah
Sun Oct 08, 2017 4:56 am
Forum: This is SolarChat !!
Topic: ISS Solar Transit 20171007
Replies: 6
Views: 1264

ISS Solar Transit 20171007

Captured it without moving, at my home!!!!!!!
What a good luck I have~~~!
by Wah
Tue Oct 03, 2017 4:30 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Wah!'s solar eclipse photos
Replies: 22
Views: 7368

Re: Wah!'s solar eclipse photos

TotalSolarEclipse_ASI071MC-Cool_20170821_Stacked2.jpg
TotalSolarEclipse_ASI071MC-Cool_20170821_Stacked2.jpg (401.25 KiB) Viewed 7168 times
by Wah
Mon Oct 02, 2017 3:11 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Wah!'s solar eclipse photos
Replies: 22
Views: 7368

Re: Wah!'s solar eclipse photos

Thank you all! I took my EQ mount, telescopes, laptops and cameras to the eclipse, and the cameras where following the SharpCap Python scripts I prepared to capture different exposure frames (0.001-4s) during the 2 minutes totality. After coming home, I extracted the frames from SER video file with ...
by Wah
Mon Oct 02, 2017 7:14 am
Forum: Great American Solar Eclipse August 21 2017
Topic: Wah!'s solar eclipse photos
Replies: 22
Views: 7368

Re: Wah!'s solar eclipse photos

New corona enhance method result.
by Wah
Thu Sep 28, 2017 8:29 am
Forum: Great American Solar Eclipse August 21 2017
Topic: About ACHF solar corona processing
Replies: 4
Views: 2666

Re: About ACHF solar corona processing

Steven Rosenow also got a VERY good result by his own processing technique, very close to ACHF result.
I wonder if he is in this forum?

https://www.facebook.com/photo.php?fbid ... 295&type=3
by Wah
Mon Sep 25, 2017 2:51 am
Forum: Great American Solar Eclipse August 21 2017
Topic: About ACHF solar corona processing
Replies: 4
Views: 2666

About ACHF solar corona processing

I have been searching for the best total solar eclipse images, and found that the images by ACHF (created by Prof. Miloslav Druckmuller) seem to be the best of all. Is there anyone here have tried such filter? Prof. Miloslav Druckmuller's eclipse photos: http://www.zam.fme.vutbr.cz/~druck/Eclipse/Ec...
by Wah
Thu Sep 07, 2017 10:57 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Help - How do you create these composite eclipse shots?
Replies: 17
Views: 5331

Re: Help - How do you create these composite eclipse shots?

Sorry, forgot to mention, you have to choose another image during the "apply image" action.

https://www.youtube.com/watch?v=YdDGU5idVFY
by Wah
Wed Sep 06, 2017 11:35 pm
Forum: Great American Solar Eclipse August 21 2017
Topic: Help - How do you create these composite eclipse shots?
Replies: 17
Views: 5331

Re: Help - How do you create these composite eclipse shots?

You cannot use the "difference" option in layers to finish the task. 1. Duplicate the original image as another one 2. Radial blur the original image 3. Use new image to subtract the blurred image with 128 offset (gray) 4. Copy the subtracted image to clip board 5. Restore the original image and pas...