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Posts Made By: Tom Licha

May 15, 2003 09:33 AM Forum: CCD Imaging and Processing/Solar System

NGC4565/4562 color

Posted By Tom Licha

Very nice one Mark!

I think I can see a slight gradient, lighter backgound to the lower left? Very good guiding. Maybe 4 times 30 minutes would not have burtn the galaxies center.

Hamp

May 15, 2003 09:35 AM Forum: CCD Imaging and Processing/Solar System

NGC5566 color

Posted By Tom Licha

Wow Ron, these are beauties!

I will add them to my list. Great picture again.

Tom

June 24, 2003 04:57 AM Forum: CCD Imaging and Processing/Solar System

M27 LRGB

Posted By Tom Licha

Hi Ron,

that's perfect for such a short exposure time! Seems like the QE of the 1001E is quite high?!?

Cheers
Tom

June 26, 2003 03:33 AM Forum: CCD Imaging and Processing/Solar System

Newbie Question?

Posted By Tom Licha

Hi John,

maybe you might be interessted in a table of all common CCD cameras and their FOV and resolution with the C8?

If yes, check this:

http://www.licha.de/AstroWeb/articles_fullsize.php3?iHowTo=9

Good luck
Tom

July 15, 2003 12:45 PM Forum: CCD Imaging and Processing/Solar System

Mars with a 3.5 inch scope

Posted By Tom Licha

Hi Ralph,

fantastic for a 3.5 inch! Congrats!

Please check my "Advice for Mars WebCam - Some tips" posting to get rid of the blue and red fringes around Mars.

Cheers
Tom

July 23, 2003 10:56 AM Forum: CCD Imaging and Processing/Solar System

ISS 07-22-03

Posted By Tom Licha

Hi Wes,

you are topping your own fantastic high resolution results again and again!

Thank you for sharing!

Tom

July 24, 2003 09:19 AM Forum: CCD Imaging and Processing/Solar System

M16 - C14/ST-10

Posted By Tom Licha

Hi Ron,

great shot!

I like to shoot lots of relatively short exposed frames as well. What was your special reason here to do that? Overexposing? Tracking?

Cheers
Tom

October 7, 2003 09:44 AM Forum: CCD Imaging and Processing/Solar System

Digital Zoom

Posted By Tom Licha

Hi,

digi Zoom is interpolation, directly in the camera. The only use is to give that feature to people who do not have a computer with grafix software which usually can do that job much better.

Digi Zoom is sometime helpful for the direct printing from camera to printer.

Cheers
Tom

October 14, 2003 07:01 AM Forum: CCD Imaging and Processing/Solar System

Looking for a "cheap" autoguider

Posted By Tom Licha

Hi Andy,

what is cheap?

I would suggest a used AstroCCD, probably 12 bit, like the MX512. Guiding Software could be AstroArt.

That is IMHO the cheapest Autoguider giving a good performance. Laptop must be already owned, of course.

No Laptop? The I would suggest a used ST4 from SBIG.

Cheers
Tom

October 16, 2003 09:11 AM Forum: CCD Imaging and Processing/Solar System

Imaging and aperture

Posted By Tom Licha

Hi John,

the exposure time will be the same because the light received in the bigger FOV is the same like light recieved from smaller FOV.

The smaller FOV will of course have a better resolution, if the seeing is allowing for that.

In deed, because f/ratio is "king", you can make superb astro images with smallest scopes and hence wide fields, i.e. the 60mm Baby Takahashi:

http://www.licha.de/AstroWeb/gallery_fullsize.php3?iSOId=4&iBPId=97

Even Telephoto lens can achieve amazing image quality.

Cheers
Tom