This is is real fun ;-)
I have still some images left on my HD taken last August at St Veran .
Here is an image of AR2710 taken with my 300 mm solar scope in G band (430 nm 1.9 nm FWHM). There are many filigrees (bright spots) visible in the intergranular region. Many ombral dots are visible in the ombra of the pore at lower left. There is a kind of ring of umbral dots in the umbra of the spot at right. Some bright spot are visible along the filaments of this same spot.
No comes the interesting thing. Thierry Legault was imaging at the same time with its C14 EdgeHD, 3.8 Astrosolar and OIII Astronomik filter (500 nm FWHM 12 nm). We we only 6 to 8 m apart. We happen to take an image at the same time, meaning the seeing was correlated on a 6-8 m base.
http://spaceweathergallery.com/full_ima ... 212874.jpg
If you download both images and compare them carefully, we will see that :
- the granules look the same (not surprising since we took our images at the same time),
- the bright points in the intergranular region are indeed visible at 500 nm, still with a much lower contrast compared to 430 nm,
- while the theoricial resolution of the N300 at 430 mn is the same as the resolution of the C14 EdgeHD at 500 nm, the effective resolution of the C14EdgeHD is lower than the resolution of the 300 mm solar telescope. Here are some of the reasons why :
Some additional (second order) reasons :
Still ... the Astrosolar turns the C14 into an amazing solar scope at a minimum budget.
Having a density 2.5 Astrosolar would be a game changer ...