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nik59
member


Reged: 07/07/08
Posts: 43
Loc: RUSSIA
Moon of Uljanovsk 20-08-08 new
      #2592877 - 08/20/08 12:08 PM Attachment (36 downloads)

My first photo of the Moon 20-08-08. Crater Janssen. Telescope LX200 10 ” +DMK21AF04. AS+R.

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LX200 10",LXD500 8",Celestron 80 mm ED,TAL-2 150 mm,DMK 21AF04,DSI-pro,LPI,NexImage,Philips-900,Celestron 25*100mm Skymaster


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desertstarsAdministrator
Deja moo
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Reged: 11/05/03
Posts: 29915
Loc: Tucson, AZ
Re: Moon of Uljanovsk 20-08-08 new [Re: nik59]
      #2592885 - 08/20/08 12:16 PM

That image really shows the rille system within Janssen nicely. It looks to me as if you have the entire network visible in that shot.

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Tom W.

SVP8 'She turned me into a 3-legged Newt' EQ
Ralph, the All-Purpose 102mm Refractor
Under the Desert Stars


"If we don't change direction soon, we'll end up where we're going." Professor Irwin Corey



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nik59
member


Reged: 07/07/08
Posts: 43
Loc: RUSSIA
Re: Moon of Uljanovsk 20-08-08 new [Re: desertstars]
      #2592946 - 08/20/08 12:42 PM

I not so understand essence of your remark. I have incorrectly placed a photo or is correct?

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LX200 10",LXD500 8",Celestron 80 mm ED,TAL-2 150 mm,DMK 21AF04,DSI-pro,LPI,NexImage,Philips-900,Celestron 25*100mm Skymaster


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desertstarsAdministrator
Deja moo
*****

Reged: 11/05/03
Posts: 29915
Loc: Tucson, AZ
Re: Moon of Uljanovsk 20-08-08 new [Re: nik59]
      #2593536 - 08/20/08 05:05 PM

If by placed you mean identified the crater and the related features, yes you have it right. Since this is am observing forum, we usually discuss an image in terms of what it shows of the Moon. My comments were meant to show members here what they can learn of the Moon through your image.

If you are wondering if this is the correct forum for your image, that depends on what you wanted to discuss. If you were looking to talk to people about how to create such an image, you would want to post the image in our Solar System Imaging & Processing forum. (I can move the thread there if you want.)

It is an excellent image. Thanks for sharing it, and welcome to the Cloudy Nights forum.

--------------------
Tom W.

SVP8 'She turned me into a 3-legged Newt' EQ
Ralph, the All-Purpose 102mm Refractor
Under the Desert Stars


"If we don't change direction soon, we'll end up where we're going." Professor Irwin Corey



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Arbacia
sage


Reged: 04/18/07
Posts: 382
Loc: Madrid, Spain
Re: Moon of Uljanovsk 20-08-08 new [Re: desertstars]
      #2593760 - 08/20/08 06:42 PM

Nick, I have a simmilar equipment: a celestron C8 and the DMK 31AF03.as. Yesterday I took the same view (mine however is 1024x768 pixels).

You must try to prevent burning the whitest areas. Try to under-expose. Check the histograms. When record the video check carefully the details in the most clear areas, move the dials for exposure and/or ganance to preserve those details. The rest of the picture will be dark, but you can save the undes-exposure during the processing.

Cheers,

Patricio

--------------------

LightBridge 12"
Celestron C8 (orange tube) on HEQ5
Set of Hyperion EPs; DMK 31AF03.AS
CN image gallery
http://www.asociacionhubble.org


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nik59
member


Reged: 07/07/08
Posts: 43
Loc: RUSSIA
Re: Moon of Uljanovsk 20-08-08 new [Re: Arbacia]
      #2594402 - 08/21/08 12:15 AM

Thank all for advice(councils). I have not mastered Photoshop still. I shall work above it.

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LX200 10",LXD500 8",Celestron 80 mm ED,TAL-2 150 mm,DMK 21AF04,DSI-pro,LPI,NexImage,Philips-900,Celestron 25*100mm Skymaster


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Arbacia
sage


Reged: 04/18/07
Posts: 382
Loc: Madrid, Spain
Re: Moon of Uljanovsk 20-08-08 [Re: nik59]
      #2594574 - 08/21/08 04:13 AM

Hello Nik59,

In photoshop there are two fundamental tools for the processing of those images: Levels and curves.
Using levels you will adjuste the dynamic range of the picture turning the "blacks" and "whites" in real blacks and whites
By using curves you will enhance the contrast at paricular levels of gray preserving the whites and black as white and blacks. Its better to run two times this tool with subtle results each than do it in a more agressive manner.


Read this:
http://www.cambridgeincolour.com/tutorials/levels.htm
http://www.cambridgeincolour.com/tutorials/photoshop-curves.htm

Read also this paper:
Pilz, B. (2008) A Workflow for Sharpening Lunar Images. Selenology Today 9: 13-31
http://digidownload.libero.it/glrgroup/selenologytoday9.pdf

Patricio

--------------------

LightBridge 12"
Celestron C8 (orange tube) on HEQ5
Set of Hyperion EPs; DMK 31AF03.AS
CN image gallery
http://www.asociacionhubble.org


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