Image of the day

Captured by
Lawrence Parchman

Sculptor Galaxy (NGC 253)

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Posts Made By: Gianluca Valentini

October 20, 2008 01:26 PM Forum: CCD Imaging and Processing/Deep Sky

One more time M16

Posted By Gianluca Valentini
Nice! I've seen you were able to solve the "filter" problem you were mentioning in one of your previous posts: what was the matter?

I would rotate the image to put the eagle "straight": it doesn't change anything but it allows to appreciate better the detail in the nebula without having to twist your neck like a turtle wink

Ciao Charles.

Luca

October 21, 2008 12:12 PM Forum: CCD Imaging and Processing/Deep Sky

NGC281 in Ha

Posted By Gianluca Valentini
Hi Jason,

I think the image looks great, not over-stretched at all. §In fact, it seems to me that it is just the right amount.

Congrats!

Luca

October 25, 2008 01:06 PM Forum: CCD Imaging and Processing/Deep Sky

NGC281Ha/RGB

Posted By Gianluca Valentini
Hello Jason,

try to use as luminance a blend of red and h-alpha (try different percentages: for me 65% h-alpha and 35% red worked fine on my only experiment in this matter). This should take care of the salmon color of the nebula and also should give some color to your stars, which inevitably loose it in this kind of color combination.
I read this in the Zone Processing: the last chapter is by R. Croman and is specifically dedicated to mixing emission line and natural colors.

Ciao
Luca

October 27, 2008 02:51 PM Forum: CCD Imaging and Processing/Deep Sky

First real image ST2k, TV102

Posted By Gianluca Valentini
Very, very nice Floyd! I know that the camera is a great one (I have the RGB version) and I know that, in your expert hands, this is only the beginning!

Love the processing too: if there was a gradient as you say, you did a fantastic job to remove it.

Ciao
Luca


October 27, 2008 03:21 PM Forum: CCD Imaging and Processing/Deep Sky

Any advice for first time one-shotter

Posted By Gianluca Valentini
Sorry Larry, but I have no experience in this matter sad I hope you find someone that can help.
Luca

October 29, 2008 11:33 PM Forum: CCD Imaging and Processing/Deep Sky

Mosaic of M31 - from Kanab, Utah

Posted By Gianluca Valentini
Very very nice Tyler. I love the linked version grin

Bye
Luca

November 9, 2008 04:12 PM Forum: CCD Imaging and Processing/Deep Sky

Helix Nebula - NGC 7293

Posted By Gianluca Valentini
Fantastic image Jim!

I would add some data though to improve signal in the outer areas of the nebula: it would be spectacular with a couple of more hours here and there wink

Ciao Jim

Luca

November 9, 2008 04:18 PM Forum: CCD Imaging and Processing/Deep Sky

IC410 Ha

Posted By Gianluca Valentini
A very nice job Jason!

Nice tight stars and great detail on the tadpoles: very well done grin

Luca

November 13, 2008 11:22 PM Forum: CCD Imaging and Processing/Deep Sky

Well, tomorrow the NP101 comes in!

Posted By Gianluca Valentini
Happy Birthday Floyd! I also had my birthday a few days ago (on Halloween to be precise. Turned 47) and my wife and son bought me a Starlight digital focuser for my Feathertouch!!!
I'm of course paying my dues as it has been pouring rain since I received it sad
I hope you won't have to mate grin

Ciao

Luca

November 20, 2008 08:12 PM Forum: CCD Imaging and Processing/Deep Sky

First Light with the NP101, The Witches Broom in B

Posted By Gianluca Valentini
I did click on the full res and I must say that you have found your scope mate wink

Great tight stars, good color balance regardless of the sinthetic green and nice balanced processing.

You should try to add another synthesized color (a more scientifically sound synthetic channel, as Richard Crisp puts it), i.e. the H-beta channel. You can do that by mixing a 20-30% h-alpha and the OIII channel. I never tried it personally, but you can find a better explanation of how to do it on Richard's website (www.narrowbandimaging.com).

Congrats on the new scope and on this fantastic 1st light Floyd.

Luca

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