Hi-res Sunspots AR1045 & AR1046 (Bris 12th Feb)

Dennis · #1 12-02-2010, 07:14 PM

Hello,

Today, the Brisbane skies gifted me with some very nice seeing once more, although I had to dig it out between cloud sets that toyed with me for most of the session.

Once again I am astonished at what Avistack has been able to reveal from the underlying data, a testimony to the power of modern software and imaging devices available to amateur astronomers.

Thanks for looking!

Cheers

Dennis

lacad01 (Adam) · #2 12-02-2010, 07:21 PM

That's pretty amazing. I don't normally enjoy looking at solar imaging but this is very impressive

malp (Malcolm) · #3 12-02-2010, 08:50 PM

Wow, great surface detail Dennis.

RobF (Rob) · #4 12-02-2010, 10:36 PM

Just stunning Dennis. I know its always going to be a treat when you put your mind to something.

I'm curious what sort of filter you're using - is that Hydrogen alpha?

firstlight (Tony) · #5 12-02-2010, 11:02 PM

That great imaging Dennis. So much detail!

sheeny (Al) · #6 13-02-2010, 08:19 AM

Gorgeous work Dennis (again!)

Al.

Quark (Trevor) · #7 13-02-2010, 10:18 AM

Lovely job Dennis,

Definitely maintaining your very high standards.

Regards
Trevor

Paul Haese · #8 13-02-2010, 10:42 AM

Dennis good seeing makes for good images. Nice granulation.

Rob, this is white light imaging. Ha is what I do. Different filters and unfortunately a lot more expensive too.

RobF (Rob) · #9 13-02-2010, 12:38 PM

Thanks Paul. I was franked surprised to see so much detail in white light, thus the Ha query. I guess I should have expected to see that typical deep orange bronzed appearance for Ha.

Dennis · #10 13-02-2010, 01:34 PM

Thank you everyone, for your words of appreciation; good seeing is indeed good!

Rob, the filter is a home made full aperture filter using Baader Astro Solar Film, the photo density variant. Using this, I can expose the DMK at its maximum frame rate of 30fps, at 1/2000 sec with the Gain set between 320 and 350 depending on the altitude of the Sun and the transparency of the skies.

In experiments to squeeze more out of the seeing, my findings with my set up did not appear to deliver any improvement if I set the exposure to 1/4000 or even 1/10,000 sec and adjusted the gain upwards accordingly.

Cheers

Dennis

jjjnettie (Jeanette) · #11 13-02-2010, 01:56 PM

I was looking at both these sunspots through a PST yesterday afternoon.
And now I have these images to remember it by.
Thanks for sharing them with us.