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Insulation for a Mak! Is it the way to go?

DIY equipment Maksutov optics
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102 replies to this topic

#101 punk35

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Posted 08 June 2019 - 10:14 AM

Good points gentleman. I only chose the moon because it was still daylight and no stars were visible. Next time I try this I’ll use a star, note the temp inside the house and outside, etc.  I maybe erroneously thought that if there were a bunch of tube currents, they would also be visible in an in focus image of the moon also. I suppose it would be difficult to differentiate tube currents from atmospheric turbulence using an in focus image. At least it wasn’t a total failure, as I learned a few things. Apologies if I wasted anyone’s time. 



#102 Reid W

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Posted 08 June 2019 - 12:40 PM

All I see there is atmospheric turbulence (seeing). You won't see the plume by pointing it (focussed) at the moon.

 

You really need to point it at a bright star, and defocus a tad to see the heat plume. And if there, it will be visible immediately - no need to sit through 12 minutes of video.

 

What would more interesting would be a video of a star,

 

- Starting with the scope warm, NO Reflectix, and out of focus so the internal plume is very visible;

- Start the camera rolling, 

- While the camera is rolling, apply the insulating jacket (I can do this on mine);

- Record as the plume dissipates,

- Every 5 minutes speak the time, so its recorded on the video.

 

And edit it down so we don't have to watch 30 minutes.

My Reflectix is attached in a way that is inconvenient to remove.

 

Do you mind performing this experiment for everyone?

 

C11 Thermal Wrap

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#103 luxo II

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Posted 08 June 2019 - 09:29 PM

Might be a while - I'm laid low with the flu at moment (it's winter here).


Edited by luxo II, 08 June 2019 - 11:33 PM.

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