Hemisphere:  Southern  ·  Constellation: Tucana (Tuc)  ·  Contains:  47 Tuc Cluster  ·  NGC 104
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47 Tucanae - NGC104 (L)RGB, 



    
        

            andrea tasselli
47 Tucanae - NGC104 (L)RGB
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47 Tucanae - NGC104 (L)RGB

Getting plate-solving status, please wait...
47 Tucanae - NGC104 (L)RGB, 



    
        

            andrea tasselli
47 Tucanae - NGC104 (L)RGB
Powered byPixInsight

47 Tucanae - NGC104 (L)RGB

Technical card

Dates:Sept. 26, 2020Sept. 30, 2020

Frames: 4x300" (20') bin 1x1

Integration: 20'

Avg. Moon age: 11.65 days

Avg. Moon phase: 86.34%

Bortle Dark-Sky Scale: 1.00

Mean FWHM: 2.10


Basic astrometry details

Astrometry.net job: 3999301

RA center: 00h24m22s.1

DEC center: -72°0621

Pixel scale: 0.548 arcsec/pixel

Orientation: 273.663 degrees

Field radius: 0.425 degrees


Resolution: 3896x3996

Data source: Amateur hosting facility

Remote source: Remote Skygems

Description

This is my first image from Skygems - Namibia and of the many gems of the southern sky I choose to go after 47 Tucanae, possibly the finest globular cluster in the entire sky. It is also so far south that you really need to go south of the equator to have a proper squint at the companion of the SMC.

This said it wasn't all smooth sailing. I would never have thought that from the darkest skies of Namibia there would be any issue with flat fielding and I was wrong. I had to struggle to get this one right. Almost as much as they had to struggle to get the 3 frames I needed to produce a RGB colour image (3 attempts to get to the end of it and I was despairing to get to the bottom of it). Add to this the issues with the image plane tilt, which meant that the field is slightly astigmatic and of different degree in different nights/colour filter. Still, in the end I managed to see it. In a way, if you see what I mean...

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47 Tucanae - NGC104 (L)RGB, 



    
        

            andrea tasselli