hi guys,

I returned from London astrofest yesterday and brought a new CCD along.
it is a monochromatic Stalight Xpress SXVF H16 - 2024 over 2024 pixel; 7.2 micrometer.

fortunately the night was clear, seeing decent and transparency fairly good enough for some FL...

here is the data:

9" TMB Apo folded apochromatic refractor (the 'big boy'...(-
SXVF H16
L: 1x1 bin, 15x9 min; no darks
R,G,B: 2x2 bin, 7x9 min; no darks

image acquisition in astroart 4
preprocessing in maxim, registax, ccd sharp
postprocessing in Ps CS2 and Pix Insight LE
color balance by trial ( i did not want to waste time with a g2v procedure last night, as I had to take all advantage out of that nice conditions...r=1.3 g=1 b=1.1

all images can be found here:

http://www.stargazer-observatory.com/ngc4490.html

I must admit, irregular galaxies are both, most beautiful and fascinating for their star burst acitivity.
I did one last year, when I tested H16:
http://www.stargazer-observatory.com/4449.html

thanks for looking - your comments and suggestions are always appreciated.

regards,
Dietmar

__________________
best regards,
Dietmar
-------------
www.stargazer-observatory.com

Excellent. How do you get your stars to come out so neat and round and small? Is it just good optics or good seeing or a good mount, or is there some specific processing involved?

clop

Looks like a winner. Color looks same as mine. Unfortunately my seeing wasn't anywhere near yours. Rarely is unfortunately. But after 6 months of nearly perpetual clouds at night I'll take anything.

Rick

Excellent pics, Deitmar. Very crisp and bright. The details are easy to distinguish.

-Veeger

...thanks Clop, Rick and Veeger.

Clop, it is a bit of all: good optics, good seeing and processing.
Rick, can you navigate me to your image please?

__________________
best regards,
Dietmar
-------------
www.stargazer-observatory.com

Clop can see what lousy seeing does to an image. It was about 4" that night. 3.5" is typical. I did have 1.2 for my M92 shot but that's extremely rare. If it's clear the jet stream is usually overhead.

http://www.usenet-replayer.com/cgi/c...8462424.3.jpeg

Rick

I've never had seeing like that. When I look through my C8 all the stars hop and jig about, shining with sharp little rays and dancing from here to there. That's the main reason I prefer to do piggyback photography rather than to image through the telescope.

Hi Diets, Very beautiful indeed sharp and tight., nice colors. Congrats on your new camera and a great first light on it also. Looking forward to see more. Clear Skies

thanks Efrain!!!

friends,

I was a bit unhappy with the core region.
so I reprocessed luminance data to let the core now stand out with
some sutile detail.
also I enhanced colors a bit and applied a bit more deconv...

http://www.stargazer-observatory.com/ngc4490.html

thanks,
Dietmar

__________________
best regards,
Dietmar
-------------
www.stargazer-observatory.com

Both stunning. I agree there is more detail visible and better colour definition in your second process. This is beautiful work

Kind regards
Matt

thanks Matt!

__________________
best regards,
Dietmar
-------------
www.stargazer-observatory.com