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 Post subject: NGC7000 Take 2......
PostPosted: Fri Oct 01, 2010 7:29 am 
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Location: Bristol, UK
Well on Thursday the clouds parted and I tried my hand at the North America again.

24 x ~120subs giving about 50min of exposure. Darks and Bias.


Image

I did take some Flats and Dark Flats but when these were added into the mix it made vignetting worse than ever and actually didn't help at all - does anyone know what the problem would be here?

Took a lot of processing (again) and I used a new technique to bring out the colour - converting to LAB and tweaking the a and b channels. I tried several iterations in DSS of various settings either by myself or using the recommended settings and then played out with the curves and RGB sliders in DSS before finishing in PS. Cant remember exactly what I did but it kinda looks ok.

This is actually a crop of a wider frame, which I may post later, which over 10,000 stars counted

Hope you like and any comments / critique are always welcome

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 Post subject:
PostPosted: Fri Oct 01, 2010 3:36 pm 
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I dont like it, I love it :lol:
How did you make the photo?

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 Post subject:
PostPosted: Fri Oct 01, 2010 4:00 pm 
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Cheers Ruben, appreciate the comments :)

Heres the process:

24 or so subs were taken at 120s each, these were then combined in Deep Sky Stacker together with Dark and Bias Frames. The resultant stack was then manipulated in DSS before being finished off in Photoshop.

HTH

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 Post subject:
PostPosted: Fri Oct 01, 2010 5:51 pm 
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Thanks, which lens did you use? Or did you use the telescope?

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Ruben

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 Post subject:
PostPosted: Fri Oct 01, 2010 6:01 pm 
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Oh yeah, sorry mate, it was taken with my Nikkor 70-200 f2.8 VR @ 70mm.

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 Post subject:
PostPosted: Fri Oct 01, 2010 6:08 pm 
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O, that's nice then 8)
The North-America nebula is thus that big! Do you know if it's visible with naked eyes (or with scope)? Or do you need a camera?
I still love it though.

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Ruben

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Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Fri Oct 01, 2010 6:15 pm 
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I think under truly dark skies you might be able to make out the shape of the nebula with the naked eye, it sits right in the band of the milky way. You will not, however, be able to make out any colour without taking a photo.

A scope, again under dark skies, will help enhance the view by magnifying it etc.

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 Post subject:
PostPosted: Fri Oct 01, 2010 6:33 pm 
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Yes, I know. Ill try to give M31 a shot this night, if the sky gets clear...

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Ruben

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 Post subject:
PostPosted: Fri Oct 01, 2010 6:42 pm 
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Good, luck. I look forward to seeing the results.

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 Post subject:
PostPosted: Fri Oct 01, 2010 6:44 pm 
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Im looking for the results too, the sky here isnt that clear now...although it was the whole day!

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Ruben

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Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Fri Oct 01, 2010 6:53 pm 
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I think everybody could understand this site: http://buienradar.nl/

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Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
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 Post subject:
PostPosted: Fri Oct 01, 2010 6:58 pm 
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That looks like what I use for checking the weather:

http://www.sat24.com/

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 Post subject:
PostPosted: Fri Oct 01, 2010 6:59 pm 
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We also know sat24.nl :wink:
Doesnt seem to become good tonight though.

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Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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 Post subject:
PostPosted: Fri Oct 01, 2010 7:01 pm 
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It kinda looks promising where I am but looking out the window its a different story - cloud :(

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 Post subject:
PostPosted: Fri Oct 01, 2010 7:09 pm 
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O dear. I hate this really, I have some new stuff for photographing at night and it's cloudy for weeks. D*mn.

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Ruben

Panasonic DMC-FZ18, Panasonic DMC-FZ28, Canon G5, Canon 350D, Canon 50D + BG-E2N
Tamron 17-50 2.8, Canon EF 70-200mm f/4L USM,
Canon 18-55 II plus lots of Minolta MD/M42 lenses and bodies


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