Observation by Peter Anderson: Jewelbox Open Cluster

Uploaded by

Peter Anderson

Observer

Peter Anderson

Observed

2020 Mar 15 - 00:00

Uploaded

2020 Mar 25 - 01:02

Objects

The Jewel Box (NGC4755)

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Constellation

Crux

Field centre

RA: 12^h53^m
Dec: -60°20'
Position angle: +1°52'

Field size

0°42' × 1°04'

Equipment

150mm F8 Skywatcher ED

Exposure

3200 ISO 15secs

Location

Brisbane Australia

Target name

Jewelbox open cluster

Title

Jewelbox Open Cluster

About this image

This exposure with the ED telescope is one quarter the length of the image with the standard achromat, so a direct comparison is not appropriate.

Files associated with this observation

22a ppt Compare shorter exp Jewelbox ED IMG_3783 ADJUST.JPG (157.5 kB)

Like this image

Mr John William Hughes, Graham Winstanley, Andy Wilson, Lyn Smith, Andrew Dumbleton

Comments

Graham Winstanley, 2020 Mar 25 - 08:22 UTC

Hi Peter,

Your new scope is looking great and performing superbly.

I think your jewels have a dose of the magentas. It is a problem I often have with the stars using a DSLR but have recently found a neat trick to fix it in pixinsight. On the colour image use process - invert, then process - scnr green at 100 percent. Then invert back again. There is probably a similar way to do it in Photoshop but I am not fluent in that language.

Best regards, Graham

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