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M13 Hercules Globular Cluster (first vs. last image)


pietervdv

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Hello all,

Last weekend I imaged M13 in Hercules. It was almost exactly 11 years ago since I first imaged this object with a ccd camera, one of my first images.

The exposure was 3.5 hours (40 x 5 min + 20 x 30s) with a Baader L filter. Scope: 10" f/3.8 Newton with sbig st8300 ccd. Guided with custom oag and Lodestar.

Very minimal processing (+/-15 min), levels / curves, gradient removal in PS.

After tweaking several nights with a ccd detilter and a new mirrorholder, this is the first image after the scope upgrade. Hope you like it!

M13_2015_thumb.jpg

Med res: http://www.astronomie.be/pieter.vandevelde/deepsky/M13_2015_med.jpg

Full res: http://www.astronomie.be/pieter.vandevelde/deepsky/M13_2015.jpg

For reference, this was the old version from 11 years ago, taken with a C8 and an SX MX7C ccd.

Still remember taken this one below very well...

Hopefully some progress is visible? :rolleyes:

M13%2017-05-04%2010x25_th.jpg

Larger res: http://www.astronomie.be/pieter.vandevelde/deepsky/M13%2017-05-04%2010x25.jpg

Thanks for checking & Regards

Pieter

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Excellent result, well resolved to the core. Any plans for colour?

Mike.

Thank you! No colour coming soon, I gave up colour imaging 6 months ago. I prefer the aesthetics in b&w for conv. photography & astrophotography.

Regards,

Pieter

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