Hemisphere:  Northern  ·  Constellation: Orion (Ori)  ·  Contains:  Sh2-261
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Sh2-261 Lower´s Nebula  (RGB), 



    
        

            Iñigo Gamarra
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Sh2-261 Lower´s Nebula (RGB)

Getting plate-solving status, please wait...
Sh2-261 Lower´s Nebula  (RGB), 



    
        

            Iñigo Gamarra
Powered byPixInsight

Sh2-261 Lower´s Nebula (RGB)

Imaging Telescopes Or Lenses
SkyWatcher Esprit 120 APO Triplet
Imaging Cameras
Moravian G2 8300 Mono
Mounts
Custom by Astronomyslt (Sky-Watcher EQ 6 R Pro)
Filters
Baader 36mm Ha 7nm · Baader 36mm OIII 8.5nm · Baader 36mm SII 8,5nm
Accessories
PrimaLuceLab SESTO SENSO 2 Robotic Focusing Motor · Artesky Flat Box USB 250mm · Sky-Watcher Flattener 120
Software
APT · PhD 2 · Pixinsight 1.8
Guiding Telescopes Or Lenses
SkyWatcher EvoGuide 50ED
Guiding Cameras
Starlight Xpress Loadestar X2 Autoguider

Acquisition details

Dates:
March 9, 2021
Frames:
126x600" (21h)
Integration:
21h
Avg. Moon age:
25.70 days
Avg. Moon phase:
15.72%

RA center: 06h09m00s.57

DEC center: +15°4600.6

Pixel scale: 1.269 arcsec/pixel

Orientation: -90.210 degrees

Field radius: 0.732 degrees

More info:Open 

Resolution: 3333x2476

Data source: Backyard

Description

Hi all friends.

This is my broadband version of the Lower's nebula, which was my first idea with this object, seeing the fantasy image of Eric Coles, unsurpassed for me. This would also be a good training for galaxies because very strangely, I still have problems getting flat fields with these images, it was no different here, a madness of tests with quite disconcerting results, which I am beginning to understand. Perhaps the first time I feel the frustration in this hobby.

Finally I composed a mediocre RGB image that the H-alpha luminance partially solved, the center of the image lacked color so I added OIII using masks so as not to affect the rest. Still some yellow chromatic marks on the background that I was able to minimize but not completely remove. Like the works of Velázquez, it is better to look at it from afar 😂😂😂.

Greetings friends, take care and enjoy.

Íñigo CS.

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Sh2-261 Lower´s Nebula  (RGB), 



    
        

            Iñigo Gamarra

In these public groups

Broadband under Bortle 7/8/9