Sun spot... with SPC880 ?! (updated with ASI120MC)

[jsmoraes (Jorge)]

Yes, my first try with our star. And perhaps the last !

It's very hard to work with a 305 mm. My heart cries with pain, because of solar heat pump on the equipment !

GSO 305 mm - webcam SPC 880

[PacoYepes]

good job

regards

[jsmoraes (Jorge)]

Thank you, Paco.
I know that they aren't impressive, despite of the camera used. But to focus the Sun and to fight against the heat on the telescope and camera was a hard task.

The camera didn't catch any proeminence. I tried. With camera adjustment. But ... none.

I didn't want to use ASI camera and Canon because it was a try and test.

But they are reazonable ! No filters... No Barlow ... I accept them !

And more one.

[Dennis]

Originally Posted by jsmoraes

>snip

No filters... No Barlow ... I accept them !

Say what! I assume you used a Solar Filter such as Thousand Oaks or Baader astro solar film; otherwise you would have melted the camera?

Cheers

Dennis

[jsmoraes (Jorge)]

Evident , Sir Watson ! I used solar filter Baader and made reduction of overture. Or, if you prefer, I did adaptation to a solar telescope.

What I didn't was thermic isolation to the OTA and camera.

My reference to filters is to the H alpha, Etalon or similar. Proeminences are better captured with them, right ?

Thanks for your visit, Dennis

[Dennis]

Hi Jorge

Thanks – I figured you did use a solar filter otherwise the camera would be molten plastic.

I haven’t used any narrow band filters on the Sun but yes, they are required to show prominences.

I can sympathise with the gruelling conditions; the heat, discomfort, focusing difficulty in bright conditions, etc.

Cheers

Dennis

[jsmoraes (Jorge)]

Thank you, again, Dennis. I know you knew.

I tried to do with ASI120MC and I am working on them. The first is ready. And I used a barlow GSO 2 inch ED, on 1.5x mode.

The espherical distortion of this barlow kill the surface details. But, despite it, the spot seems to be well.

[Poita (Peter)]

Nice photos!

I use a large umbrella to shelter the telescope, camera and myself from the heat of the Sun.

[jsmoraes (Jorge)]

Thank you, Peter. The main problem is to see the screen of netbook !

And after some cleanning of sensor from dust. Some photos with ASI120MC

GSO 305 mm - ASI120MC - 1280 x 960 px

1) VirtualDub resize 50% - wavelets Registax 6 - Photoshop

2) wavelets Registax 6 - Photoshop

3) resized to 580 px - wavelets Registax 6 - Photoshop