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Sculptor Galaxy (NGC 253)

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Posts Made By: Gianluca Valentini

October 9, 2008 10:46 PM Forum: CCD Imaging and Processing/Deep Sky

Re: Dark blobs on CCD

Posted By Gianluca Valentini
Definitely dust on the CCD window. I would follow John's advice and get one of those antistatic brush. I have one and it works perfectly. Cleaning fluid would do also, but it more messy and more risky.

Ciao
Luca

October 16, 2008 06:40 PM Forum: CCD Imaging and Processing/Deep Sky

Sum or average?

Posted By Gianluca Valentini
Hello guys,

here is the beginning of my 2nd narrowband imaging project: IC1396 grin

This is the h-alpha shot: it is composed of 37x15min subs 8)

However, I could not process all the images together, so I divided them into 3 batches and then averaged the results. I also tried to sum them, but the resulting image did not seem all that different. But, since the values seemed a bit strange (I got some 200,000 values 8O ), I decided to process the average.
Any advice on this procedure? Should I use the sum when I have a similar problem in the future? I forecast there will be more of these multi-subs images in my future and I would love to know how to go about it.

The set up is my usual: TEC APO180FL with FF & ST-L 11K

Thanks and ciao

Luca

October 19, 2008 10:49 PM Forum: CCD Imaging and Processing/Deep Sky

IC1396 redux

Posted By Gianluca Valentini
Hi guys,

I've reprocessed the 32 15min subs (originally 36, but 4 had to be rejected sad )

I like this one better than the one posted a few days ago. It is a sum of 3 mean-combined images (I couldn't process all the images together :C ) The image is reduced to 50% size and 50% quality.

I'm now working on the 2x2 binned version that I was able to process all at once (all the 32 subs!) and I collected some OIII data grin

Criticisms are always welcome. Tips even more so!

Ciao

Luca

December 12, 2008 05:35 PM Forum: CCD Imaging and Processing/Deep Sky

Not exactly Deep Sky: My website!

Posted By Gianluca Valentini
I know this is a little bit OT, but I wanted to tell you guys that my website www.amun-ra.org is now officially online.
It is a solar imaging site, but I thought you wouldn't mind too much the intrusion grin

Ciao and come in great numbers to visit wink

Luca

December 31, 2008 06:29 PM Forum: CCD Imaging and Processing/Deep Sky

Haapy New Year Of Astronomy to all!!

Posted By Gianluca Valentini
I wish you and your loved ones the best 2009 you can think of.

It would be OT not to wish everyone a great new year of imaging too wink

Ciao
Luca

May 13, 2009 02:44 PM Forum: CCD Imaging and Processing/Solar System

Sun on May 11th

Posted By Gianluca Valentini
Well it seems that it was much ado about nothing after all!

The active region that originated the massive CME of the may 5th has withered into a series of faculae but no sunspots sad

After Mike's great pictures, here is my attempt:

http://www.amun-ra.org/NOAA_OT/Other%20Events/Faculae_1011_11052009.jpg

So we are going to need some more patience for cycle 24 sad sad

Ciao all and thanks for watching

Luca

September 23, 2009 10:14 PM Forum: CCD Imaging and Processing/Solar System

Eventually: NOAA 11026!

Posted By Gianluca Valentini
The sun seems to be definitely awake...for now. If you have a solar scope now is the time to remove the webs and pointing it at the sun!

Shot with my Solar Spectrum and TEC180 at 5000mm focal length. At times the seeing was good.

Ciao guys

Luca

September 25, 2009 09:31 AM Forum: CCD Imaging and Processing/Solar System

A prominence

Posted By Gianluca Valentini
Here is a great prom captured just yesterday, Sept. 24th.

I have it in 2 focal length 2500 and 5000.

Here is the 2500mm 8)

September 27, 2009 11:23 PM Forum: CCD Imaging and Processing/Solar System

Another NOAA 11027 in hi-res

Posted By Gianluca Valentini
I know that this Jupiter's hunting season wink but the sun woke up and I thought to keep you guys updated 8)

This is 11027 taken today at 11:35 UTC at 5000mm fl and 140mm aperture.

Hope you like it.

Luca

October 26, 2009 03:20 PM Forum: CCD Imaging and Processing/Solar System

catch of the day: NOAA 11029

Posted By Gianluca Valentini
Hi guys,

today sunspot 11029 was truly magnificent in hi-res!
I was lucky enough to catch it quite early before the seeing deteriorated and so I went for full aperture and long focal, i.e. 180mm and 5000mm.

I believe it came out pretty good and I hope you guys enjoy it 8)
This is 100% size although I had to sacrifice a little quality to meet the size requirements.

Ciao
Luca

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