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Posts Made By: Andre Moutinho

June 19, 2004 08:21 PM Forum: Equipment Talk

Maybe collimation problem

Posted By Andre Moutinho

Hi,

I have tested a new 12.5" f/4.7 mirror in my scope with a 1/15 wave Antares Optics. The image quality was good but I expected more in planetary detail. I had almost the same detail level that I usually have with my 7" f/7. Due to the fact that the mirror was refigured by a great optician and my lack of experience in fast systems, I believe my problem should be collimation. I would like to know how precise should be collimation and if a laser tools is necessary or I may use my cheshire as usual.

Thanks,

Andre

June 19, 2004 08:21 PM Forum: Telescope Making

Maybe collimation problem

Posted By Andre Moutinho

Hi,

I have tested a new 12.5" f/4.7 mirror in my scope with a 1/15 wave Antares Optics. The image quality was good but I expected more in planetary detail. I had almost the same detail level that I usually have with my 7" f/7. Due to the fact that the mirror was refigured by a great optician and my lack of experience in fast systems, I believe my problem should be collimation. I would like to know how precise should be collimation and if a laser tools is necessary or I may use my cheshire as usual.

Thanks,

Andre

June 20, 2004 06:02 AM Forum: Equipment Talk

can I use ?

Posted By Andre Moutinho

Can I use that 2" 30mm 80 of fov in my 12.5" f/4.7 without coma issues ?
Thanks,
Andre

June 21, 2004 03:36 PM Forum: Telescope Making

reducing the tube length

Posted By Andre Moutinho

Hi,

I have a 12.5" PVC tube scope and I would like to reduce the tube lenght to a minimum required. I would like to know the minimum distance between the focuser and the tube apperture.
Thanks,
Andre

June 21, 2004 05:11 PM Forum: CCD Imaging and Processing/Solar System

Does focal reducer exists for 1.25

Posted By Andre Moutinho

Does focal reducer exist for 1.25" focusers ?
Thanks,
Andre

June 26, 2004 07:26 AM Forum: Equipment Talk

which is better ? Skyview pro or lxd55 ?

Posted By Andre Moutinho

which is better ? Skyview pro or lxd55 ?
For short exposure astrophotography... Up to 1 or 2 minutes

Thanks,
Andre

June 26, 2004 07:49 AM Forum: Equipment Talk

Does anyone have any experience with Skyview pro mount in A

Posted By Andre Moutinho

Does anyone have any experience with Skyview Pro mount in Astrophotography ?

Thanks,
Andre

June 26, 2004 07:51 AM Forum: CCD Imaging and Processing/Solar System

Does anyone have any experience with Skyview Pro m

Posted By Andre Moutinho

Does anyone have any experience with Skyview Pro mount in Astrophotography ?

Thanks,
Andre

June 26, 2004 08:51 AM Forum: Equipment Talk

Illuminated reticle advice

Posted By Andre Moutinho

Hi,

I am looking for an illuminated reticle but I am don't know what features I should consider. I have found that some are wireless, some have and simple reticle and other are astrometric. What is this ?!
Thanks for any advice.
Andre

June 30, 2004 02:03 PM Forum: Equipment Talk

focal reducer for 1.25" focuser ???

Posted By Andre Moutinho

I have a newtonian scope with a 1.25" focuser and I intend to use a modified vesta webcam to capture some images.
I would like to use a focal reducer in order to get a wider field and brighter images.
Does exist focal reducers for 1.25" focusers ?? And for 2" focusers ?

Thanks,

Andre Moutinho