LDN43 The Cosmic Bat Nebula (Shara #5.1) (Antonio Grizzuti)

LDN43 The Cosmic Bat Nebula (Shara #5.1)

Link: https://astrotrex.wordpress.com/2023/07/04/shara5-1-closed-the-bat/

Dear friends,
Here my personal version of Shara #5.1

This time we chose the Cosmic Bat Nebula (LDN43), an amazing dark nebula located in the constellation of Ophiucus.

Link to the "super-stacked" image: https://www.astrobin.com/4anh82/

Some information about this nebula and the project (source https://astrotrex.wordpress.com/2023/07/04/shara5-1-closed-the-bat/):
The fifth project was also split in two! There is a clear split within the group: half of the participants are polarized towards nebulae and the other half towards galaxies. To please everyone, in the end it was decided to take advantage of the large budget raised (record 1100 euros!) to create the two most voted targets, starting with LDN43, the Bat Nebula.

Here is the working paper of the project with the list of targets initially proposed by some members and voted democratically.shara5-workingpaper_rev1 DownloadThe first subject realized was the dark nebula LDN43, nicknamed “Bat Nebula” due to the clear resemblance of this dust complex to a bat!

We opted for a classic LRGB session with 300s exposures in bin1, taking advantage of the half-meter f/3.8 Newtonian (the T3). Unfortunately, after the 4 shooting sessions, we realized that the material had a huge defect, not eliminated by the calibration with the Flat/Dark/Bias: two worms crossed right in the center of the field of view making the starless version of the nebula quite poor. We dabbed with the stamp tool and informed the Help Desk of the Chilescope service, who refunded us part of the session (always very available) pending the creation of new calibration files.

Where is LDN43

The bat-shaped condensation appears to be an evolutionary gradient along the isolated filament in which LDN43 is embedded, itself part of the Sco OB2 complex (group of young, hot and massive stars of class O and B, the brightest in the sky ).Extinction map della regione di Ofiuco con evidenziata nel riquadro rosso la condensazione LDN43 (L43), fonte Planck.The Sco OB2 complex is a large star-forming region centered in the constellation Scorpius. It is the closest cloud to us and it is one of the most spectacular and photographed areas of the entire Milky Way. It is full of molecular clouds and dust. young and massive star clusters, emission and reflection nebulae.A view of the Milky Way galaxy in microwaves, captured by the European Space Agency’s Planck satellite. The different colors correspond to different elements, including gas, dust, and energetic particles. (Image credit: ESA/NASA/JPL-Caltech)In reference to the galactic center and plane, the cloud is shifted more to the right and north than the position of our solar system, as can be seen from the image above and above all from this following beautiful polar map of stellar density near our system solar (Local bubble) made with the observations of GAIA (on the right the galactic center).

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LDN43 The Cosmic Bat Nebula (Shara #5.1)

LDN43 The Cosmic Bat Nebula (Shara #5.1)

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LDN43 The Cosmic Bat Nebula (Shara #5.1)

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