Tutorial: Pedro's Hi Res Ha

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Merlin66
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Tutorial: Pedro's Hi Res Ha

Post by Merlin66 » Wed Mar 21, 2012 2:02 pm

HIGH RESOLUTION H-ALPHA IMAGING TUTORIAL

LINK to my webpage (images are linked there)
http://re.apaaweb.com/image_processing.html

Acquire high resolution H-alpha images (50 to 75 gamma DISK/ 200 to 250 gamma PROMS - DMK cameras)
Save AVI files or SER files (12 bits) (DMK or SKYnyx cameras)
Align and Stack images in AVISTACK http://www.avistack.de/
Open REGISTAX http://www.astronomie.be/registax/
Open FIT file (aligned and stacked in Avisatck)
Process the combined image using Wavelet-based image restoration
Reset the Wavelet filter (500 to 1000 center value)
Use layer 1, 2 and 3 of Wavelet filter - gaussian (try several options)
Save image (16-bit TIFF file)
Process TIFF file in Photoshop PS CS5
Use Curves to adjust contrast and brightness if necessary
Use Shadow/Highlights option
Use Smart Sharpen or Unsharp Mask
False Color Mapping BLUE CHANNEL, GREEN CHANNEL, RED CHANNEL
Save the final 16-bit TIF file (no compression)
Convert to 8-bit and save JPG file (no compression)

Attachments: ps_cs5_ha-06.jpg (507KB)























a few screens with the settings I use for H-alpha and CaK imaging (full disk) Astro-Tech 80mm F/7 apo refractor + DMK41
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.yahoo.com/neo/groups/ast ... scopy/info
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer

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