Observatory for solar imaging

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torsinadoc
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Observatory for solar imaging

Post by torsinadoc » Mon Feb 11, 2019 6:47 pm

One of 2019 goals will be to build an observatory. Is anyone using a dome for solar imaging? I suspect there could be issues with local seeing until the building temperature reaches equilibrium with exterior temp. I was thinking of adding an exhaust fan to help pull air out of the building. The other option is a ROR.
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torsinadoc
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Re: Observatory for solar imaging

Post by torsinadoc » Tue Feb 12, 2019 9:38 am

Thanks for the link
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MalVeauX
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Re: Observatory for solar imaging

Post by MalVeauX » Tue Feb 12, 2019 4:21 pm

Heya,

I use a ROR. I find that early morning (100% humidity in the morning and night here in Florida), I have to drape mylar material over the wall facing the sun (930am) due to evaporation sending plumes and currents from the condensated water droplets until it's completely dry (once the evaporation is complete this stops though). Also, I covered my roof itself completely with mylar tarp then some poly (to protect the mylar) to reflect light so it doesn't retain heat in the roof material and cost me local seeing when shooting over the roof during the day (mid-day and evening). It made a big difference in my local seeing once I did this. You have to be very careful shooting over walls, buildings, the ground, etc. Lots of things to consider that will effect your local seeing.

That said, observatory is the best thing I ever did for astronomy!

Attached a video to show what I mean about dew evaporating as the sun is rising on my Eastern wall and how it will kill seeing instantly if it's not dry or finished evaporating or covered with a tarp.

Very best,
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MAURITS
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Re: Observatory for solar imaging

Post by MAURITS » Tue Feb 12, 2019 5:40 pm

I have an observatory too (ROR) and this is the BEST investment in this hobby ...
No issues with internal seeing, but like Marty said it's important to cover the roof side.
Regards,
Maurits

Vista del Cielo Observatory

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torsinadoc
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Re: Observatory for solar imaging

Post by torsinadoc » Tue Feb 12, 2019 11:54 pm

MalVeauX wrote:
Tue Feb 12, 2019 4:21 pm
Heya,

I use a ROR. I find that early morning (100% humidity in the morning and night here in Florida), I have to drape mylar material over the wall facing the sun (930am) due to evaporation sending plumes and currents from the condensated water droplets until it's completely dry (once the evaporation is complete this stops though). Also, I covered my roof itself completely with mylar tarp then some poly (to protect the mylar) to reflect light so it doesn't retain heat in the roof material and cost me local seeing when shooting over the roof during the day (mid-day and evening). It made a big difference in my local seeing once I did this. You have to be very careful shooting over walls, buildings, the ground, etc. Lots of things to consider that will effect your local seeing.

That said, observatory is the best thing I ever did for astronomy!

Attached a video to show what I mean about dew evaporating as the sun is rising on my Eastern wall and how it will kill seeing instantly if it's not dry or finished evaporating or covered with a tarp.

Very best,

Interesting video. We have similar humidity in the AM.
Lunt 80 DS
ZWO 174M
Lunt CaK 1800
Quantum PE
ES 102/SV80ST
Avalon M Uno

https://www.astrobin.com/users/torsinadoc/

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