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Old 15-09-2020, 05:34 PM
morls (Stephen)
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Europa, Jupiter, Io, Callisto 14th Sept 2020

Setting up last night around dusk, I had a quick peek at Jupiter and saw the GRS and a shadow transit. Technical issues followed (of course), but I finally managed to get a series of images. This one was taken last night 19:44 to 19:49 AEST in Melbourne. If I'm correct, left to right is Europa, Jupiter with Callisto's shadow, Io and Callisto. If I'd been able to get it together earlier I would have had a chance at dual shadow transits of Io and Callisto. Oh well...
By the way, does anyone have tips for generating suitable images in Windows10 for IIS? Keeping under the 200Kb limit is hard when the .png files I export from Gimp are 16MB or so.
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Last edited by morls; 16-09-2020 at 07:03 AM. Reason: amend time of imaging
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Old 16-09-2020, 01:13 AM
Saturnine (Jeff)
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Nice image, glad to see that someone manged to catch the Callisto transit, was clouded out up here, again.

As for reducing the image file size for posting here, download Freesizer
http://www.freesizer.com/.
Does a good job of resizing to whatever file size you need.
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Old 16-09-2020, 03:05 AM
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RAJAH235
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A very nice image there.
Good stuff.

& for reducing any images, I recommend this free program...has a heap of great features...
> FastStone Photo Resizer 4.3
From > https://faststone.org/

freesizer looks good as well.
Thanks Jeff.
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Old 16-09-2020, 07:04 AM
morls (Stephen)
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Thanks Jeff and Rajah, I'll check out those programs.
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Old 16-09-2020, 09:03 AM
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multiweb (Marc)
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Nice widefield.
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Old 16-09-2020, 09:58 AM
morls (Stephen)
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Thanks Marc. I've processed another from this session, just Jupiter and shadow. Full file: https://astrob.in/g1z2ze/0/
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Last edited by morls; 16-09-2020 at 05:59 PM.
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