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Old 06-04-2014, 04:25 PM
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lazjen (Chris)
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Ghost of Jupiter (NGC 3242)

During my cloud dodging last night, I slewed to this area. I couldn't get a guide star easily (even with 2.5 sec exposures), so this is based on ISO3200 images, 5 sec duration x 13.

No darks or flats, applied. And it's massively cropped, so I guess I need a bigger scope.

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Old 07-04-2014, 04:06 PM
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traveller (Bo)
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Good job Chris,
hope you have another go once the clouds move away.
Bo
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Old 07-04-2014, 06:06 PM
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I'm sure I will one day. I'd like to get better results.
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Old 07-04-2014, 06:16 PM
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Shiraz (Ray)
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that's an excellent image - you certainly don't need a bigger scope.
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Old 07-04-2014, 07:54 PM
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Nice image, Chris.
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Old 08-04-2014, 09:54 AM
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lazjen (Chris)
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Well, yes, technically it's true I don't *need* a bigger scope, but this was basically a tiny spec on the camera's frame. It would be great to see it in more detail.
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Old 08-04-2014, 12:52 PM
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Great work! I'd love to go after planetary nebs but to do them justice (and give yourself a chance!) you really do need at least 2m of focal length for most of them.
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Old 08-04-2014, 05:15 PM
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quite similar to what Eskimo looks like except with a different centre.
Got this a couple of nights ago
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Click for full-size image (eskimo.jpg)
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  #9  
Old 08-04-2014, 06:01 PM
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I just looked for the Eskimo Nebula in Stellarium - it lists it as about 42" in size. Then I looked at the Ghost of Jupiter for comparison and I think the data Stellarium lists is wrong as it lists it at 20'48".

No matter, I do like these discussions - I often end up finding out all sorts of other interesting things!
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Old 08-04-2014, 06:45 PM
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Bassnut (Fred)
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Excellent Chris !. You can post larger pics of PN by cheating a bit. Upscale by say 4 or even 8 in PS and then sharpen. Sharpen does wonders on lots of data, even if its upscaled.
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  #11  
Old 08-04-2014, 08:47 PM
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Interesting, re: upscaling, as I hadn't considered that. I just had a play around with it - I think I can see the possibilities, but I my data didn't show much more.

I think my original shot had some sharpening - it's something I've found useful as a near final step in a number of the images I process.
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