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.

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...

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!

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

Do you have more information about the equipment? Thanks!

I can see the Ha line!
Just kidding

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 ...

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...

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

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.

The camera ASI174MM theoretically can have 128fps, but I just could get about 100fps because of drop frames.

Captured it without moving, at my home!!!!!!!
What a good luck I have~~~!

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 ...

New corona enhance method result.

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

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...

Congratulations, Alexandra!

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

https://www.youtube.com/watch?v=YdDGU5idVFY

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...

I used AS!3 to stack the same exposure frames and used Photoshop to combine different exposure stacked frames with layers. Oregon is too large, days go too fast, we never had enough time to watch everything there in detail... BTW, forgot to mention about the videos we took during the eclipse: C3: ht...

Late solar eclipse photos
May accidents before and during the eclipse, but still can see the total solar eclipse for the first time!

Super detail! Is there any ERF for CaK being used?
Where can I buy SAFIX? Thanks!

2-frame animation

Here is the cropped version