M16 - Eagle Nebula

[CoolhandJo (Paul)]

Taking advantage of the clear skies, I took this image the other night of the Eagle Nebula.

It is LRGB 40:30:30:30 taken through an ED80 and DSI III pro.

PS curves, levels, sharpening.

Wanted to get closer through the LX200 10" but had focusing issues (couldn't achieve focus - need to adjust the optical train). So used the LX200 to guide with DSI-C

Thanks for viewing.

[Hagar (Doug)]

Nice image Paul. The DSI seems to be working quite well. I cannot get a night to get out and do anything of late.

Keep them coming.

[CoolhandJo (Paul)]

Thanks Doug. Yes, I managed to get out a few nights this month. The only thing that stopped me now is the moon rise.

I was thinking of reprocessing this image to try and get the stars less blown out, but will wait for some more feedback. Its hard to determine as each of my monitors gives a different look (even though most are calibrated!).
Thanks Doug

[DavidU (Dave)]

Tighter stars would complete a great shot.

[renormalised (Carl)]

Nice shot there, Paul

Stars do look a little blown, but not that much it spoils the piccie.

[Alchemy (Clive)]

Originally Posted by CoolhandJo

I was thinking of reprocessing this image to try and get the stars less blown out, but will wait for some more feedback. Its hard to determine as each of my monitors gives a different look (even though most are calibrated!).

just recalibrated mine today, i used an EYE ONE Display LT calibration gadget, just plop it on the screen and it does it automatically, made a huge difference to the laptop.

as for the tighter stars, its hard to comment without seeing a copy of the stacked file prior to processing. to shrink the stars most people use some version of a minimum filter, and the color range selection tool. the carboni plug ins work mostly ok but they do apply the minimum filter across the whole image to some degree ( try several itterations and you will notice the effect,plus you really only want to apply to the larger stars)

clive

[renormalised (Carl)]

an EYE ONE Display LT calibration gadget, just plop it on the screen and it does it automatically

Clive, you'll have to posts a piccie of the gadget in the equipment forum, show us how it works

[CoolhandJo (Paul)]

Guys, thanks for feedback. Where does one get that "EYE ONE"? Sounds like a good idea.

As for th repro. I will give it a shot as mentioned and see!

Thanks

[peeb61 (Paul)]

A very nice DSI III image Paul.
Mate this one is difficult at the best of times but it has turned out nicely.

Here's a nice link to reduce star bloat.

http://www.astronomy-images.com/Arti...star-bloat.htm

Keep them coming Paul.

Paul

[CoolhandJo (Paul)]

Paul, thanks for the comments and the link. I tried it out and it did reduce the stars a tad.

I will incorporate this into my processing regieme!

[Hagar (Doug)]

Sorry Paul, I couldn't help myself again. I thought I might reduce the stars a little to see how the image came up.

This time I used Noel carbonies tools to select bright stars.
Select, modify expand 3 pix. Select, modify, feather 2 Pix.
Filter, other, minimum 1 pix.
A few small levels and curves.

It came up quite well but I think you could use a better set of RGB filters to correct your colour but otherwise not a bad image.

[telecasterguru (Frank)]

Paul,

You are getting there with the DSI III.

Frank

[CoolhandJo (Paul)]

Originally Posted by telecasterguru

Paul,

You are getting there with the DSI III.

Frank

Thanks Frank. The camera suits my setup so it makes it easier to get half descent results.

Doug- thanks for the repro. I use the stock meade rgb but do have a baader IR/UV sitting in front of them and for the Lum channel.

I will consider an upgrade of the RGB. Is it usual to put the IR/UV infront of the RGB or is this overkill? Maybe thats why the stars are hard to reduce?