Today's SUN (20180915) | PST Ha & PST Ca-K FD images

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pedro
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Today's SUN (20180915) | PST Ha & PST Ca-K FD images

Post by pedro » Sat Sep 15, 2018 6:09 pm

Today's SUN (20180915) | PST Ha & PST Ca-K FD images

WEBLINK:
http://re.apaaweb.com/sun_h_alpha_2018-09.html

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IMAGING SETUPS

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IMAGING SETUPS (PST | H-alpha)

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IMAGING SETUPS (PST | Ca-K)

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SUN (20180915) H-alpha DISK. PST (H-alpha) PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180915) Ca-K. PST (Ca-K) PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180915) Ca-K. PST (Ca-K) PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180915) H-alpha DISK & PROMS (09:30 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180915) H-alpha DISK & PROMS (09:30 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180915) H-alpha DISK & PROMS (09:30 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180915) CaK PROMS (09:30 UTC). TV101 F/5.4, LUNT 1200 CaK Module, PGR GRASSHOPPER 3 GS3-U3-28S4M

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SUN (20180915) WL, CaK & H-alpha (09:30 UTC). TV101 F/5.4, LUNT 1200 CaK Module, SM60, BF30, PGR GRASSHOPPE 3 GS3-U3-28S4M

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pedro
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Re: Today's SUN (20180915) | PST Ha & PST Ca-K FD images

Post by pedro » Sat Sep 15, 2018 7:24 pm

Imagesun_PST_Ha_20180915_GS3-U3-28S4M_Ha_flat-01 by Pedro Ré, on Flickr

Artificial flat-field (PST H-alpha image)

more at:
http://re.apaaweb.com/image_processing.html

ARTIFICIAL FLAT-FIELD (SUN)

Open mosaic image (16-bit TIFF file) Open File
Create a new Layer Duplicate Layer
Create a Mask Create Mask
Copy mosaic image to Mask
Apply a Median Filter (e.g. radius 25) Median Filter
Reduce Mask brighthness (Curves) Reduce Mask brighthness
Apply Mask (Difference) Apply Mask
Reduce Mask Opacity if needed Reduce Mask Opacity
Flaten Layers
Use Curves and/or Levels to adjust contrast and brightness Use Curves and/or Levels
Save flat-field corrected image (16-bit TIFF file)
Before/After BEFORE/AFTER

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Uncorrected mosaic image (Left)/flat-field corrected image (Right)

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Re: Today's SUN (20180915) | PST Ha & PST Ca-K FD images

Post by Montana » Mon Sep 17, 2018 9:06 am

Some lovely shots with the PST, nice to see CaK proms! I could never manage that with mine as it is so dark getting just the surface ;)

Nice tutorial too.
:bow

Alexandra


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