Tarantula Nebula in the Large Magellanic Cloud ( Alex Woronow )

Tarantula Nebula in the Large Magellanic Cloud

RA center: 05h38m49s.67

DEC center: -69°04′33″.1

Pixel scale: 9.511 arcsec/pixel

Orientation: 90.969 degrees

Field radius: 3.736 degrees

WCS transformation: thin plate spline

More info:Open

Resolution: 2000x2000

File size: 20.2 MB

Data source: Amateur hosting facility

Remote source: Telescope Live

Tarantula Nebula in the Large Magellanic Cloud

OTA:……………….FSQ 106ED (AUS2)
Camera:………….FLI Proline
Observatory:…. Telescope Live

EXPOSURES:
…R: 12 x 450
…G: 12 x 450
…B: 10 x 450
…H: 14 x 300
…S: 12 x 300
…O: 11 x 300
Total exposure   7.3 hours

Image Width: 5d 17m
Processed by Alex Woronow (2022) using PixInsight, SWT, Topaz

Here are two versions of a wide-angle view of the Tarantula nebula and surroundings in the Large Magellanic Cloud. Both versions use emission-line extraction. Image A is SHO-Lines + RGB and image B is the SHO-Lines only. In both cases, the SHO lines were mapped to my version of true-color and H-beta was synthesized for each image.

The Ha emission line, plus 10% of the OIII and SII lines combined to make the L-channel in the SHO-Line image (B). Image A had no additions to its L-channel.

There are several differences between the two images, as should be expected. The most obvious is the lack of the blue star-illuminated cloud to the lower left of the Tarantula-nebula complex in the SHO-Lines image (B). That blue patch is obviously dominated by reflection nebulae. Image C is a blinking image of the Ha image (as captured) and the Ha emission-line only image. The “as captured” image contains the continuum spectrum as well as the emission line. And, indeed, the reflection nebulae contribute, through continuum emissions, to the Ha as-captured image, but are gone from the line-only image, as they should be. (Neither image has been processed beyond applying a stretch.)

Final
Original
B
C

B

Title: SHO Extracted Emission lines

Description: Please see discussion on the left

Uploaded: ...

C

Title: Blink of Ha as captured and extracted Ha emission line

Description: Please see the description on the left

Uploaded: ...

Objects of the South - negative declination only
Takahashi Refractors
The refractors!
Narrowband imaging

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Deep sky
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Star trails
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Noctilucent clouds

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Own remote observatory
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Status	Advanced success
Started	...
Astrometry.net job	6034087
PixInsight job	LHQ6VBD6OJMDFH7DI7KVYPCDLIMXD94G
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h38m49s.67
RA (top/left)	06h11m39s.10
RA (top/right)	06h05m36s.97
RA (bottom/right)	05h13m06s.70
RA (bottom/left)	05h05m07s.40

Dec (center)	-69°04′33″.1
Dec (top/left)	-71°34′34″.4
Dec (top/right)	-66°20′15″.4
Dec (bottom/right)	-66°16′01″.1
Dec (bottom/left)	-71°28′26″.7

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