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ollypenrice

'Im again? Get 'im off!

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Sorry, but with 7 clear nights on the trot it has been all go down here. I wanted a better image scale for the Crab than I had with my f=500mm Genesis so did this one in the Meade 127. Ha RGB, the Ha used lightly in luminance and more heavily in red. I thought the dark halo around the nebula was an artifact but another imager got it as well so I guess it is dust driven ahead of the expanding nebula. I had never noticed it before. It only shows when you view the screen just right. (I daresay I'm the only one who didn't know about it...)

Greetings to all,

Olly.

post-15040-133877351777_thumb.jpg

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That's a wonderful Image Olly, and a biggie too. Lovely colouring. :salute:

I think the technical term for the expanding nebula pushing on the interstellar medium, is the Bow Shock.

But, I've been wrong at times. :(

Ron. :D

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7 clear nights in a row...... &%^$&^%&£%&"&%&"% ^%$^""%^^^"£"

i'll see your 7 clear nights and rise you to 23 cloudy ones....

Nice one Olly :(

Billy....

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Very Nice I just finished getting a few hours of rgb for my crab tonight hopefully it will come out as good as yours Olly

Les

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Wow, another stunning Crab Nebula image! that's an awesome image, the detail in the filaments is great! :thumbright:

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Olly, I'm certain the dark halo is an artefact, as it's darker than all the other space in the picture, right to the edge; in other words, it's darker than the black point of the picture. I don't want to sound rude, but the whole image is a bit odd; the dark "holes" in the nebula are also too black and the nebula looks "painted on" to the sky. It's something in the processing. Has it been sharpened and then blurred or something?

David

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That is superb, but 7, I'm not sure I can remember ever getting 7 in a row, or in a month, or.........

Trudie

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Some nice colour and detail in there Olly. Agree with Dave that the image does have a bit of a "worked on " look. The surrounding halo has the look of an artefact produced by use of the selection tool at some stage ?gradient exterminator

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