[© 최광민] 장노출 천체이미징 (AP) 포스트 프로세싱

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© 草人 최광민 2024-06-20

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제목

[© 최광민] 장노출 천체이미징 (AP) 포스트 프로세싱

요약

단노출 영상관측 (EAA) 및 장노출 천체이미징 (AP) 포스트 프로세싱과 관련된 팁 

순서

1. 연습용 이미징 데이타
2. SharpCap + Siril (EAA)
3. Siril + Gimp + Darktable

The Horsehead Nebula/IC434

Credit: T.A.Rector (NOIRLab/NSF/AURA) and Hubble Heritage Team (STScI/AURA/NASA)

# 연습용 이미징 데이타

CN 쓰레드 

https://www.cloudynights.com/topic/669677-sample-dataimages-for-practicing/

Rockstarbill

https://www.cloudynights.com/topic/606009-data-data-data-fits-provided-lots-of-them/

whwang

https://www.cloudynights.com/topic/669677-sample-dataimages-for-practicing/

TAIC Workshop

https://www.theastroimagingchannel.org/taic-workshop.html

AstroPix

https://www.theastroimagingchannel.org/taic-workshop.html

Oort Cloud

https://www.cloudynights.com/topic/862495-process-my-data-thread/

Most of it is broadband, so just a single linear stacked FITS for each target: Most should have little to no gradient

https://drive.google.com/drive/folders/16rNaG6zlIkWav9ofLRE49HXbpgo_b7H2

There is also a subfolder for each of 2 duoband/OSC sets, each with a Ha & OIII stack.

https://www.dropbox.com/scl/fo/pigzyn656hfhno3csv9g7/APIjUMUk_RwE1S-HER-sYgk?rlkey=j52u2l3kwfr2pl6t9i8bnegpy&e=1&dl=0





영상관측 (EAA) 후 SharpCap에서 저장한 stacked FITS 파일을 Siril과 Gimp 포스트프로세싱 하는 과정을 짧게 하면 아래와 같다.



# SharpCap + Siril

https://www.cloudynights.com/topic/922978-using-siril-to-quickly-enhance-eaa-images/

https://www.youtube.com/watch?v=9K-V2VIcwfQ



# Siril + Gimp + Darktable

CN

https://www.cloudynights.com/topic/648683-processing-comparison-pixinsight-vs-siril-gimp-darktable/

• Pre-processing in SiriL
• https://siril.org/tutorials/tuto-manual/
• Crop (SiriL)
• Background extraction (SiriL)
• Color calibration (SiriL)
• Manual stretch (SiriL)
• Denoise (Gimp)
• Curves (Gimp)
• Contrast/brightness adjustment (Gimp)
• Local contrast enhancement (Darktable)
• Noise reduction (Darktable)
• Saturation (Darktable)

https://imgur.com/a/incOaWa

草人