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asimov
31-08-2011, 02:02 PM
Seeing was absolute rubbish but I wanted to test out a theory. I made a 60% aperture mask for the 11" SCT which works out to approx. a 5" aperture less the fairly big central obstruction.

Even though the seeing was sub par; 2-3/10 tops (I only saw a very brief 2 second period with seeing of about 8/10) I'm now starting to see granulation & surface details. Can't wait for nice seeing to test this out further.

Cheers.

RB
31-08-2011, 02:11 PM
Looks like the mask helped under those conditions.
Nice one SpongeBob.

:P

asimov
31-08-2011, 02:14 PM
Yeah; Bob's my 'claim to fame' isn't it:lol::P GO Bob 'N B1..!!!:D

On a more serious note...Thanks Andrew.

Quark
31-08-2011, 02:38 PM
Sounds like your adding another string to the bow there Asi.

Asi, years ago I experimented with a whole plethora of masks and one that produced interesting results was off axis.

Might be interesting to try a mask with the largest off axis hole you can cut that uses a section of your primary from its outer edge to the edge of your secondary to give you a totally unobstructed light path. You probably have already tried this but if not.....

Regards
Trevor

asimov
31-08-2011, 02:41 PM
Thanks Trevor. No, I must admit I haven't tried an off axis mask on any SCT as yet. I'm no stranger to all kinds of masks with a newt though.

Might be worth a look with the SCT later.

Cheers.

Poita
31-08-2011, 02:56 PM
I've been thinking about masking the old C8 for solar ever since I got the PST and solar bug. I'm watching with great interest!

John Hothersall
31-08-2011, 05:54 PM
I do love your WL images as they are so rich in detail even with less than avg seeing.

John.