[EP.50] Image Processing of TRIANGULUM GALAXY (M33) by SiriL and GIMP: Blend Broadband and Dual Data

In this tutorial video, I combined approximately 10 hours of broadband data and 20 hours of narrowband data using SiriL and GIMP. Background extraction was performed separately on each day's observation before manually stacking the data in SiriL to produce both broadband and narrowband images. I then stretched both images and split them into RGB channels, resulting in six separate images. Using GIMP, I blended the narrowband red and green channels with their respective broadband counterparts. The final image was recomposed in SiriL.

- - Imaging Details - - -
Deep sky objects: M33 / NGC 598
Date: August 4, 2024 - December 02, 2024 (18 nights)
Location: Bunkyo-ku, Tokyo (Bortle Class 9)
Imaging Camera: Vanis Vespera Mark I
Filter: Dual Band Filter (501.6 nm, 654.9 nm, 12 nm)
Integration: 9 h 18 mins (Broad) + 19 h 58 mins 10 secs (Dual)

Image processing device and software:
- - Vespera Observation Station: Vespera is your new observation station, the perfect combination of telescope and camera. Smart and fully automated, Vespera is a revolution in the world of Astronomy. With a completely redesigned experience of observation, substituting the eyepiece with a mobile application, everyone can access the wonders of the Universe with ease. Official website: https://vaonis.com/vespera
- - Siril 1.4.0 Beta2: A free astronomical image processing software, is fully capable to pre-process and process astronomic images by offering to the users a large set of dedicated algorithms. Official website: https://siril.org

~ ~ ~
Settle in, relax, and enjoy the wonder of the deep sky imaging processing as it is designed without spoken commentary, allowing you to immerse yourself fully in beauty of our universe.
~ ~ ~

- - Table of Contents - - -
00:00 - Title
00:05 - Pre-processing of dual band data
06:08 - Pre-processing of broadband data
12:37 - Manual stacking of dual band data
16:42 - Manual stacking of broadband data
18:02 - Post-processing of the dual band image
22:53 - Post-processing of the broadband image
38:56 - Splitting Hɑ and OIII channels
40:02 - Manual blending broadband and narrowband channels
43:22 - Recompositing color image
56:07 - Final image

#galaxy #m33 #ngc598 #triangulumgalaxy #imageprocessing #siril #siriltutorial #gimptutorial #gimp #robotictelescope #vaonis #vespera #deepskyimaging #nebula #nebulae #narrowband #dither #dithered #dithering #panorama #astronomy #observationstation #emissionnebula #tutorial #nightsky #bortle9 #astrophotography #relaxing #asmr #asmrvideo #workwithme #working

= = = = = = = = = = = = = = = = = = = = = = =
Twitter X: @DimLightChaser
Instagram: @dimlightchaser