SpaceX DM-2 and ISS Live Stream!

I deliberately do not live in a big city. I bought a house quite a few miles away from the nearest large city so that I could have better viewing of deep space objects.

Good job that was nice to watch (live)

what did you expect from a bunch of trumptards?

they think he's smart because he's smarter than they are, lol

very nice, BTW

50 likes to 0 dislikes. Press X to doubt. Everyone who actually watched it, liked it.

I must say anyone that thinks the ISS is fake or some child's toy probably still has an imaginary friend that touches their special purpose just before they go to sleep.

Given the distances involved the rotation of the earth and atmospheric conditions, that was a damn good video and better than any one here could reproduce.

I was tracking a space station moving at 7 km/s and I had it in the frame from the tree line up to the peak of the pass. And I did it with software that I wrote myself. I totally agree, these idiots have no idea who they're talking to or what they're talking about. they are extreme examples of the Dunning-Kruger effect. They're so ignorant that they don't realize that they don't know what they're talking about, and furthermore they fail to recognize true skill in other people.

Last Edited by Astromut on 07/15/2020 07:06 AM

Every last one of your detractors can't track the moon with their cellphones.

Dare I ask what power your telescope is? and did you build it?

I think Dunning-Kruger is a long shot to explain this pathological behavior, Astromut. This people attacking You in this thread, are either purposefully just being ass for satisfying some kind of twisted need for attention, or plainly insane. There’s not much other options, IMHO.

That said, Kudos for the great streaming, filming a such fast traveling object With that steadiness of the image is a tech challenge you ace time and time again.

Thread: ISS 'must' travel same Parabolic trajectory of a Zer0-Gravity airplane or cannot achieve same weightless effects.

Thread: ISS flies over curvature of earth, so does an airplane, how come there's gravity in an airplane while astronauts float?

Okay so you don't understand the concept of free fall or the difference between a suborbital trajectory and an orbital trajectory. Got it. You failed physics. Your failure doesn't prove anything.

Last Edited by Astromut on 07/15/2020 07:48 AM

An airplane isn't in free fall when it's flying straight and level. It's supported by the lift of the wings. ISS is not, ISS is in free fall at orbital velocity around the Earth. See this is the kind of profound stupidity I was speaking about before.

Last Edited by Astromut on 07/15/2020 07:50 AM

"Therefore the same anti-gravity results are UN-achievable on the ISS, because the ISS is made of metal and according to the law of density would be under the Vacuum of Space."

Objects in earth orbit don't use anti-gravity, they are positioned in earth orbit by speed and gravity. Inside the ISS there is very low gravity but there is a measurable effect of gravity inside of it.

The bigger and heavier a structure, the faster it has to move in earth orbit unless it is positioned at a Lagrange point where the earth gravity, the moon's gravity and centrifugal force provide a stable stationary orbit above the earth.

[link to hyperphysics.phy-astr.gsu.edu]

It is not total Zero Gravity or "anti-gravity" at all.

Trust me, I am a Space Mouse.

I appreciate that demo, astro. If the witches at youtube (or online hecklers) give you any trouble, tell them most governments in the world would happily tax their people for rockets that never even take off!

Doc you do amazing work don't waste your time on willfull idiots.

Here you go:
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Wasn't me. I was asleep. I am not the only mod here. Openly attacking a mod who is providing you with free live footage of ISS sounds like a great way to try to get yourself banned. If you don't like my threads, don't click on them. It's that easy.

Amazing TY

that was really cool. i can appreciate the

do you need servos/motors with better resolution? i heard you mention not being able to control the hardware's 180 degree rotation to keep its cable untangled. what equipment do you need?

No, the resolution of the encoders is fine for this use case. It's just that the telescope is hard coded to perform a cord untangle maneuver when ISS passes the meridian on the north side of the sky. On top of that, since the telescope was alt/az aligned, the azimuth rate that would be needed to keep up goes to near infinity at the zenith (ISS passed just a few degrees from the zenith at the peak of the pass this morning, right as the telescope could no longer keep up).

The zenith limitation and the cord untangle limitation could be resolved by polar aligning the telescope (since it's a fork mount there's no meridian flip) and that is an option, but it requires more setup time and critically makes the telescope more susceptible to vibrations (including vibrations from its own motors). I want to experiment with that some time, but since SpaceX DM-2 will only be docked to the station for a few more weeks I didn't want to play with any unknowns until I get the best footage I can possibly get in this known configuration. I think I achieved that this morning, but I need to process the raw footage later. I think the final result will look quite good. I do want to play with ISS tracking while polar aligned and find out just how badly the increased vibrations impact the footage, but this morning was not the time for that. Great quality footage of the first half of the pass is better than motion blurred footage of both halves of the pass.

Last Edited by Astromut on 07/15/2020 12:24 PM

No.

The hole was in a Soyuz capsule. The atmospheric pressure outside ISS is effectively 0 atm. So that's 1 atm pressure differential from sea level air pressure. A submarine at 1000 feet depth is dealing with a pressure differential about 30 times higher.

Last Edited by Astromut on 07/15/2020 12:24 PM

hi Astro. I have an older (2005 or so) Meade etx 105mm on an old meade mount that I inherited. the mount does not track auto. Is there a mount I can put this scope on that will find and track objects automatically the new Meade tripods will not take my mounting. at least that's what I have been told

Freefall at orbital velocity

Haha this place is priceless

understood. uncertain what is known or can be known about differential pressures further away from the earth.

Hmm, not sure, I'd have to see the tube to see if you could put a vixen plate on it or something of that nature. If you can, you should be able to throw it on a NexStar mount, I know they sell the 6" NexStar mount separately as just the mount by itself.

thanks i will try that.

That was incredible! Great job and thank YOU!

Off topic, sorry . I’m having a tough time picturing why we can see the comet pre dawn and dusk. Morning it leads the sun, evening it trails.
I’m stumped.