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Posts Made By: Tom Licha

July 29, 2002 09:44 AM Forum: CCD Imaging and Processing/Solar System

Deep Sky Observation Planning

Posted By Tom Licha

Hello,

we finished a tool for finding the deep sky objects best placed at certain month. According to your field of view you will get a list out of 284 currently online. Includes the most popular clusters of galaxies, all Messier and lots of NGC, IC among others.

Another tool is listing all of these objects by size to match the targets to your field of view.

When a photo is already available you can link from to tools to this photo together with more information.

I hope it is helpful to some of you and you would like to contribute some pictures to the site.

http://www.licha.de/AstroWeb

Thanx
Tom 49° 13' 54" N

July 29, 2002 09:44 AM Forum: Film Astrophotography - Imaging and Processing

Deep Sky Observation Planning

Posted By Tom Licha

Hello,

we finished a tool for finding the deep sky objects best placed at certain month. According to your field of view you will get a list out of 284 currently online. Includes the most popular clusters of galaxies, all Messier and lots of NGC, IC among others.

Another tool is listing all of these objects by size to match the targets to your field of view.

When a photo is already available you can link from to tools to this photo together with more information.

I hope it is helpful to some of you and you would like to contribute some pictures to the site.

http://www.licha.de/AstroWeb

Thanx
Tom 49° 13' 54" N

July 29, 2002 09:45 AM Forum: Off Topic Discussions

Deep Sky Observation Planning

Posted By Tom Licha

Hello,

we finished a tool for finding the deep sky objects best placed at certain month. According to your field of view you will get a list out of 284 currently online. Includes the most popular clusters of galaxies, all Messier and lots of NGC, IC among others.

Another tool is listing all of these objects by size to match the targets to your field of view.

When a photo is already available you can link from to tools to this photo together with more information.

I hope it is helpful to some of you and you would like to contribute some pictures to the site.

http://www.licha.de/AstroWeb

Thanx
Tom 49° 13' 54" N

September 4, 2002 03:54 AM Forum: Equipment Talk

Re: wait for Discovery scopes

Posted By Tom Licha

I got my 10 inch from stock. Instant. Am I a lucky guy?!?

In deed: for that price the optics are superb!

CU
Tom
mehr freude. http://www.licha.de/AstroWeb 49° 13' 54" N

September 7, 2002 06:01 AM Forum: Equipment Talk

Too small secondary - optical implication?

Posted By Tom Licha

Hello,

what does a too small secondary do to the system performance?

Only a loss of light or even reducing the resolution of the primary (Raleigh criterion)?

Thanx
Tom

October 2, 2002 09:40 AM Forum: Film Astrophotography - Imaging and Processing

SkyGlow Filter for LRGB

Posted By Tom Licha

Hello,

has anyone experience with the Baader SkyGlowFilter for LRGB (filter apllied to all frames)?

Gute Nacht
Tom
mehr freude. http://www.licha.de/AstroWeb 49° 13' 54" N

October 9, 2002 10:51 AM Forum: Telescope Making

OSLO How to input central obstruction?

Posted By Tom Licha

Hello,

how can I input the central obstruction of a Newtonian to OSLO? I sucessfuly applied the 45 degree secondary, but this has no effect to the PSF.

A central obstruction should pump light from the center to the first diffraction ring. But my modelled secondary does not change that...

Thanx and
Gute Nacht
Tom
mehr freude. http://www.licha.de/AstroWeb 49° 13' 54" N

October 28, 2002 03:00 AM Forum: CCD Imaging and Processing/Solar System

Skyglow filter review

Posted By Tom Licha

Hello,

I set online a review of the Skyglow filter. Test performed with Takahashi FS-60C and Starlight HX916

http://licha.de/AstroWeb/reviews_fullsize.php3?iRevId=21

Regards
Tom

October 28, 2002 03:04 AM Forum: Takahashi

FS-60C Skyglow filter review

Posted By Tom Licha

Hello,

I set online a review of a Skyglow filter with FS-60C and HX916 CCD.

http://licha.de/AstroWeb/reviews_fullsize.php3?iRevId=21

Also there is a gallery of images taken with the FS-60C. Comments on the quality are welcome...

http://licha.de/AstroWeb/search.php3?sSearchText=takahashi+&sSearchButton=OK

Regards
Tom

November 4, 2002 10:23 AM Forum: Film Astrophotography - Imaging and Processing

Recommended Wide Angle Lens

Posted By Tom Licha

Hi all,

can anyone recommend a good wide angle lens arround 16mm? I had a close look at a Zenitar 16mm. Does anyone know about the performance on stars?

Thanx
Tom
mehr freude. http://www.licha.de/AstroWeb 49° 13' 54" N