View Full Version here: : 40D - NGC6357 Emission Nebula
Tamtarn
10-06-2008, 05:35 PM
NGC 6357 Emission Nebula in Scorpius
A lineup of four 7th magnitude stars point to the heart of this faint emission nebula.
We found the nebula emits very strong HA colour as we had only red nebula in our subs taken with our unmodded 40D.
I love the foreground stars and have tried to get a feeling of 'shining' stars in our image. Hope you like it.
Barb
Details
Canon 40D Unmodded - Skywatcher 200mm Newt
Captured last Thursday
20 x 7 min lights - 2 x 10 min lights......... 10 x 7min darks - 2 x 10 min darks .......... all ISO 800
Higher resolution :: http://barb.david.1.googlepages.com/home
43714
skeltz
10-06-2008, 05:59 PM
Good going barb and dave,sure does emit a lot of red thats for sure,the four stars captured in a line add another dimension to a already nice image.
Are you thinking about getting a coma correcter one day?
CHEERS
gbeal
10-06-2008, 06:02 PM
Stunning, I love it.
Forget Rob, I reckon it looks good without the coma corrector, LOL.
Gary
Tamtarn
10-06-2008, 07:07 PM
We are already using an MPCC corrector Rob, it was possibly collimation.
Lester
10-06-2008, 07:18 PM
Stunning image, well done.
winensky
10-06-2008, 08:06 PM
Wonderful shot. Coma? Now collimation At f/4-5 I understand... and continuously curse. Not much of that either here. Well done.
skeltz
10-06-2008, 08:26 PM
Your probably right there barb and dave,i have learn,t that with mine ,always a bit of tweaking and adjusting.
I don,t reliase sometimes until i take a image and then i go DOH!!:thumbsup:
Beautiful capture Barb and Dave, plenty of detail and lovely colour, nice work indeed
Leon
Great capture Barb & Dave, There is some good detail in the nebulosity and I agree with your comments about the stars, they add a nice dimension and effect to the overall image.
Cheers
Ian Robinson
10-06-2008, 10:02 PM
Wow not bad for an 8" .... can't wait to get my 4OD.
Is there a Deep Space filter (or similar) between the camera and the mirror to cut down on light pollution ?
Next job for me - reassemble the 10" f4.7 newtonian ota.
Alchemy
10-06-2008, 10:16 PM
Image looks good, your focus is spot on with the diffraction spikes as sharp as. Youve done really well with the amount of Ha the 40d has captured..... or could it just be good processing. Either way nice:thumbsup:
Tamtarn
10-06-2008, 10:37 PM
No light pollution filter used Ian, the only thing between the camera and the secondary mirror is a mpcc coma corrector. Our skies are semi dark.
Hagar
10-06-2008, 10:40 PM
Wonderful image Guys. Really a stunner. The detail in the nebula requires a long look.
Really Nice image
well done
Great acquisition and processing Barb. Love the four stars in a row. One of my favourite targets. Well done.
Tamtarn
11-06-2008, 10:48 AM
Thanks for the comments Gary Lester Matt Leon and Ric much appreciated
Robert_T
11-06-2008, 11:07 AM
Beautiful, an incredible blend of strength in the colour and delicacy in the detail. I love it:thumbsup:
Tamtarn
11-06-2008, 05:18 PM
The subs had only red nebulosity and it took a bit of processing to drag it out and were surprised by how much could be extract with processing. Like to see you do this one with the QHY8 Clive ;)
The nebula is very striking Doug once you draw the detail out.
Thanks Jase. I really loved processing this one :)
I wondered if I had overdone the colour Robert but it looked pretty striking so I just went with it.
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