Observing / recording a satellite pass

13 years 7 months ago #41332 by Frank Ryan
Observing / recording a satellite pass was created by Frank Ryan
Some previous posts got me thinking how would you go about observing
or even recording a satellite pass thru a scope.

There is a function on Meades' scopes to log a track and then when
it comes into view it will follow the object.

The ISS for instance tonight shows a track for 5:56 ish (roughly)
so I wonder if you could get your focus right (how!?)
Could it be recorded by webcam or the like?

(My scope beside me is now tracking away and It's not moving as fast as I
thought it would!)

Has anyone on these boards attempted such a thing?

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers

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13 years 7 months ago #41355 by DaveGrennan
Replied by DaveGrennan on topic Re: Observing / recording a satellite pass
Frank,

Quite frankly I would be amazed if the meade scope could track a fast moving satellite accurately enough unless you somehow tediously programmed the exact track into it. As for focussing thats easy. Focus on a star or the moon or any far away object. Since all are at infinity focus the satellite would be in focus.

I remember many years ago Dave Moore (from AI) showing me a method known as the 'false pole' method. You see even something like a satellite will appear to rotate about a point (like the stars do around polaris). To use this method you need a german equatorial mount. You first determine where this false pole is by plotting the track onto a star chart determining the RA and DEC of the centre of the circle described. Then you convert to altitude and azimuth (could even be below the horizon) and you align your mount on this. Then when the satellite appears you wait for it to come into the field of view and either track it manually or by using a hand controller. Using this method we managed to get really good footage of MIR on a video camera hooked up to the scope. When we examined the tape later we could see solar panel on some of the individual frames when the seeing was good. It was a real buzz to get something like that on video.

Please post any more info you find on this topic.

Thanks,

Regards and Clear Skies,

Dave.
J41 - Raheny Observatory.
www.webtreatz.com
Equipment List here

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13 years 7 months ago #41361 by Frank Ryan
Replied by Frank Ryan on topic Re: Observing / recording a satellite pass
Thanks Dave, will do.

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers

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