Rosette Nebula HA

wysiwyg (Mark) · #1 18-01-2011, 05:18 PM

Well here is another HA target recently acquired on probably the best two nights of seeing in CBD Adelaide I have ever experienced. The seeing was below 1 arc on both nights with half moon.

This image is comprised of 10 x 20 minute subs in HA.

Rosette Nebula HA

Thanks for Looking!

Cheers
Mark

Exfso (Peter) · #2 18-01-2011, 05:27 PM

Mark, I can't just look at this image without 1st downloading it. Is there any reason for this?

wysiwyg (Mark) · #3 18-01-2011, 05:33 PM

Quote:

Originally Posted by Exfso

Mark, I can't just look at this image without 1st downloading it. Is there any reason for this?

Sorry! Try now?

Exfso (Peter) · #4 18-01-2011, 05:50 PM

That works now, absolutely lovely image mate...

RobF (Rob) · #5 18-01-2011, 09:06 PM

I can't seem to see it either Mark whatever I do. Would like to see this one. Wonder what I'm doing?

OzRob (Rob) · #6 18-01-2011, 09:13 PM

Quote:

Originally Posted by RobF

I can't seem to see it either Mark whatever I do. Would like to see this one. Wonder what I'm doing?

I am having a problem too. This is all I see:

Bad Image Reference
The Image ID specified in the URL does not exist. It was probably deleted, but verify the URL.

wysiwyg (Mark) · #7 18-01-2011, 09:26 PM

sorry guys, problems with pbase!
should b working now!

Mighty_oz (Marcus) · #8 18-01-2011, 09:39 PM

Very nice, what exposures ? Taken with the FSQ and STL11K CCD i presume

RobF (Rob) · #9 18-01-2011, 09:44 PM

Got it now. Thanks for turning off the "anti Rob" filter

Wonderful detail and framing with your camera and OTA combination. Certainly has a lot of "impact".

If I'm going to be picky (petty?) I think the highlights in the brightest parts of neb and brightest stars might be a bit blown? It certainly is a learning curve stretching Ha (and I'm no expert for sure)

renormalised (Carl) · #10 18-01-2011, 09:47 PM

Nice shot, Mark. Great detail

Craig_L · #11 18-01-2011, 10:01 PM

Great shot Mark. Have to agree with Rob though if you can tone down the highs and you will have more detail I think. Whats your set up?

wysiwyg (Mark) · #12 18-01-2011, 10:07 PM

Thanks guys and sorry about the links not working!

I will have another look at those highlights, so thanks for the comments.

FSQ106N with STL11K, 10 x 20 min subs.

Cheers
Mark

mill (Martin) · #13 18-01-2011, 10:08 PM

That is one very fine picture Mark.
I think it can have a wee bit more selective sharpening here and there

wysiwyg (Mark) · #14 18-01-2011, 11:55 PM

Thanks again for your comments, hopefully I have addressed some issues in this version.

Rosette Nebula HA

Paul Haese · #15 21-01-2011, 01:31 PM

Just found this image. Overall it look rather nice but for some critique I would say two issues stand out.

There is a lot of background noise in the original image. Using a mask to control the background noise will help here.

Secondly the stars look over sharpened. This can come about by using curves and sharpening without doing it selectively. The curves function bloats the stars and then sharpening removes the fluffy edge around the stars. Using masks for the sharpening will prevent the stars looking like they do at present.

Any chance of doing a narrow band rendition?

gregbradley · #16 21-01-2011, 10:49 PM

A wonderful Ha image. Looks great.

Greg.

multiweb (Marc) · #17 22-01-2011, 11:56 AM

Wow! Great contrast! Love Ha!

Astroman (Andrew Wall) · #18 22-01-2011, 12:07 PM

Amazing detail, brilliant image IMO, getting to really like this Narrow band imaging stuff, I hope to try it out one day, when I get my gear back into order... I like the fact you are still shooting from Suburbia and producing clean images like this... amazing.. what brand Ha filter was used?

Hagar (Doug) · #19 22-01-2011, 02:07 PM

Very nice Marc. Nice sharp contrasty image.

wysiwyg (Mark) · #20 27-01-2011, 01:20 PM

Quote:

Originally Posted by Paul Haese

Just found this image. Overall it look rather nice but for some critique I would say two issues stand out.

There is a lot of background noise in the original image. Using a mask to control the background noise will help here.

Secondly the stars look over sharpened. This can come about by using curves and sharpening without doing it selectively. The curves function bloats the stars and then sharpening removes the fluffy edge around the stars. Using masks for the sharpening will prevent the stars looking like they do at present.

Any chance of doing a narrow band rendition?

Paul,

Dont think I will get below 1 arc sec seeing for a while in metro Adelaide so a NB rendition will have to wait.

Quote:

Originally Posted by gregbradley

A wonderful Ha image. Looks great.

Greg.

Thanks Greg

Quote:

Originally Posted by multiweb

Wow! Great contrast! Love Ha!

Cheers mate

Quote:

Originally Posted by Astroman

Amazing detail, brilliant image IMO, getting to really like this Narrow band imaging stuff, I hope to try it out one day, when I get my gear back into order... I like the fact you are still shooting from Suburbia and producing clean images like this... amazing.. what brand Ha filter was used?

Andrew,

Thanks for the kind words. The HA filter is a 50mm Baader 7nm.

Quote:

Originally Posted by Hagar

Very nice Marc. Nice sharp contrasty image.

Cheers mate