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Captured by
Lawrence Parchman

Sculptor Galaxy (NGC 253)

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Posts Made By: Gianluca Valentini

March 28, 2008 03:58 PM Forum: CCD Imaging and Processing/Solar System

single EOS DSLR shot of moon

Posted By Gianluca Valentini
Fantastic shot Mike! When I saw it I knew it had to be taken with a high class scope grin

Congrats.

Luca

March 28, 2008 04:53 PM Forum: CCD Imaging and Processing/Solar System

Sunspots!!!!!

Posted By Gianluca Valentini
NICE SHOTS MATE!

The white light ones are great;

As you point out, the h-alpha shows the solar imager's nightmare: Newton rings sad
There are very few things that can really explain those, apart from a particularly unlucky camera/filter/focal length combination.

I believe that you may have changed something in your settings and that something may have determined the appearing of the rings. I can tell that something is changed even because the contrast in that shot isn't quite right.

I say this because I had something similar happening to me and then I found out that it was a tilting problem (I had to tweak the T-max to tilt the etalon a little bit).

However, Newton rings are a very difficult problem to cope with: Some of my shots show them; others don't. Luckily, most of them don't grin I'm experimenting lately with a "flat field" type frame, but I can't say that the results are satisfactory for the time being. If I'll ever succeed, this list is the 1st that will know about it, but don't hold your breath smile

Ciao Paul

Luca

March 30, 2008 02:48 PM Forum: CCD Imaging and Processing/Deep Sky

Narrowband targets?

Posted By Gianluca Valentini
Now I have a pretty good list to work on grin

March 30, 2008 03:16 PM Forum: CCD Imaging and Processing/Solar System

NOAA 988

Posted By Gianluca Valentini
This is always NOAA988 but in white light. Same focal length as the h-alpha. TEC180mm with Baader Herschel prism with Baader continuum filter. Only 23 frames were salvaged and used for this image out of the 500 captured sad

Ciao
Luca

March 30, 2008 03:25 PM Forum: CCD Imaging and Processing/Solar System

Saturn from WSP 2008

Posted By Gianluca Valentini
Very nice image John. It's nice to see what you bring back from the WSP every year. Last year's seeing conditions must have been better because I still remember your memorable saturn image 8O

I like the larger one better.

Ciao John

Luca

April 2, 2008 08:28 PM Forum: CCD Imaging and Processing/Solar System

988 again

Posted By Gianluca Valentini
Thank you Steve, Tom and Bob for the kind comments. I have a couple more sequences I still have to process and they might yield something interesting 8)

Ciao all

Luca

April 4, 2008 02:48 PM Forum: CCD Imaging and Processing/Solar System

More 988 and 987

Posted By Gianluca Valentini
Well done Paul!

I particularly like the F25 shot.

Luca

April 5, 2008 09:59 PM Forum: CCD Imaging and Processing/Solar System

Tranquillitatis, Dorsa Heim & Zirkel

Posted By Gianluca Valentini
As usual an outstanding lunar image!

Thanks Stefan

Luca

April 8, 2008 12:24 PM Forum: CCD Imaging and Processing/Solar System

Sunspots from March 28

Posted By Gianluca Valentini
Very, very good images Paul! You are sure getting the hang of it grin

The granulation is really detailed and the processing is better than the previous images you posted a few days ago. Probably this is what makes the granlation so much more evident.


Ciao Paul

Luca

April 11, 2008 02:49 PM Forum: CCD Imaging and Processing/Solar System

Saturn Last Night

Posted By Gianluca Valentini
Fantastic Jim! Great color balance, great detail, smooth processing: what more can anyone ask? wink

Luca

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