Lunt/C6R mod. June 8th Solar Ha

[allcart]

Took these in the afternoon after the Tal pics. The seeing was becoming more unstable or at 152mm everything is exagerated.

DMK41 x1.6 barlow

AR1765 Closeup.

LS60T-C6R 8-6-13 AR11765 by allcart2, on Flickr

And a not terribly good prom

LS60T-C6R 08-06-13 prom (1) by allcart2, on Flickr

[Merlin66]

Allan,

OK but....

The TAL in today's seeing seemed better.....

[allcart]

You're not wrong Ken. I tend to judge the seeing by what I see on the laptop screen. In the morning session with the Tal, the image was stable and easy to focus. I had made some refinements to the pst etalon and went through the clocking proceedure to get the sweetspot central and more uniform and all was working well.

Then I switched to the Lunt mod in the afternoon. There was a slight breeze, the temp was higher and the image was far less stable on the screen. That closeup is only 8 frames out of 1000. I don't stack anything less than 80% quality in AS!2 and I only go down to 80% if I really need to.

I can get more detail with the Lunt mod due to its aperture and focal length but it is a heavy beast and more difficult to use. I will make a smaller, lighter 120mm version, and maybe adapt the Tal as well.

I was reasonably pleased with the pic, but I had to be a bit heavy handed with the PP, and it shows.

[michael.h.f.wilkinson]

Still a nice picture. What does your Lunt/C6R-mod look like?