Observation by Alan C Tough: Yutu

Uploaded by

Alan C Tough

Observer

Alan C Tough

Observed

2021 Jul 28 - 23:29

Uploaded

2022 Feb 05 - 17:10

Objects

The Coalsack Nebula (Caldwell 99)
Acrux
Mimosa
The Jewel Box (NGC4755)

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Constellation

Crux

Field centre

RA: 12^h53^m
Dec: -62°59'
Position angle: +46°53'

Field size

7°48' × 5°52'

Equipment

Samyang 135 mm lens @ f/3.5
ZWO ASI1600MM camera
Rainbow Astro RST-135 mount

Exposure

Luminance = 6 x 300 secs; RGB = 3 x 300 secs per filter

Location

iTelescope T70, Rio Hurtado Valley, Chile (remote)

Target name

The Coalsack Nebula

Title

Yutu

About this image

Inca astronomers referred to the Coalsack Nebula as “Yutu”, a partridge-like bird native to the Andes. The two bright stars in the accompanying image belong to the Southern Cross: they are (lower-right) Acrux (Alpha Crucis) and (top-right) Mimosa (Beta Crucis). There are also several open star clusters visible here, including the wonderful Jewel Box, to the left of Mimosa.

I captured this image remotely, using iTelescope T70 in the Rio Hurtado Valley, Chile (hence the reference to Yutu!). Total exposure time was 75 minutes through LRGB filters.

Processed using Astro Pixel Processor and Adobe Photoshop 2022.

The highest resolution image can be found here:
https://www.flickr.com/photos/7776810@N07/51860747829/

Files associated with this observation

coalsack_20210728_actough.jpg (1.5 MB)

Like this image

Graeme Coates, Manolo_Rodriguez, Jeremy Shears, David Basey, Dominic Ford, Callum Potter, Graham Winstanley, Alun Halsey

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