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Posts Made By: Andre Moutinho

September 22, 2004 04:19 PM Forum: Equipment Talk

Meade UWA 8.8 or TV Nagler 9 ? Which one should I

Posted By Andre Moutinho

Hi,
Which ep is better ? Can anyone give me any advice ?
Thanks,
Andre

September 27, 2004 07:58 PM Forum: Equipment Talk

Maksutov precision doubt

Posted By Andre Moutinho

I have read in an article that the maximum Strehl ratio of a 30% obstruction system is 0.810 or 1/3 pv. I have also seen
some Intes mak certificates stating a 1/7 precision. How can it be possible?
Thanks,
Andre

September 27, 2004 08:17 PM Forum: CCD Imaging and Processing/Solar System

Focusing with a ST7E

Posted By Andre Moutinho

Hi, I am using a st7e of our local observatory but I though the focusing process very difficult. The image takes a lot of seconds to be transfered from the ccd camera to the computer. And the focus knob of a c8 have a lot of turns!!! So the whole focusing process seems to be very annoying. Finally I always have to use an ocular to find an object and then the ccd must be focused all over again.
Thanks,
Andre

October 2, 2004 08:06 AM Forum: CCD Imaging and Processing/Solar System

Toucam pro 740K or Toucam II 840K

Posted By Andre Moutinho

Hi,
What is the difference between these 2 webcam ? I intend to do planetary astrophotography, but I don't know which to buy. Does the Toucam II 840K have drivers for Windows 98 ?? I know the toucam pro has.
Thanks,
Andre Moutinho

October 2, 2004 08:12 AM Forum: CCD Imaging and Processing/Solar System

IR filter for planetary astrophotography

Posted By Andre Moutinho

Is it worth using this filter ? Do images taken with the IR filter is
much better than those taken without this filter ?

Thanks,
Andre

October 2, 2004 03:17 PM Forum: Equipment Talk

Where can I find Toucam Adapter and Focal Reducers ?

Posted By Andre Moutinho

What other manufacturers are available for these acessories ? I already know Moggs.
Thanks,
Andre

October 6, 2004 06:20 PM Forum: Equipment Talk

Observatory class Cassegrain Optics kit

Posted By Andre Moutinho

Hi,

Where can I buy a observatory class 20" Cassegrain optics kit (primary and secondary). The kit must be supplied with a quality certificate.

Thanks,
Andre Moutinho

October 8, 2004 08:36 AM Forum: CCD Imaging and Processing/Solar System

Astrophotography using Pentax *ist DS ?

Posted By Andre Moutinho

Does anyone have any experience using the above camera in astrophotography?
Thanks,
Andre

October 8, 2004 08:36 AM Forum: CCD Imaging and Processing/Solar System

Astrophotography using Pentax *ist DS ?

Posted By Andre Moutinho

Does anyone have any experience using the above camera in astrophotography?
Thanks,
Andre

October 8, 2004 10:31 PM Forum: Equipment Talk

start testing

Posted By Andre Moutinho

Hi,

I was star testing my scope made with a 12.5" f/4.7 mirror. The in-focus
rings were very defined. But I almost could differentiate the out-focus rings and also there
was a beyond outer ring haze. Is it normal ?

Thanks,
Andre