HA from yesterday... and a quick "CaK"

[Macavity]

"Throwing my hat in first" (lol) a bit on this one?  
At ALL times I sense / "calculate" (even my camera)
was behind (carefully mounted) ND 5.0 or more!  

But I did make a "best endeavour" efforts with the
Baader DS K-line Filter! Better, not-perfect sky? 

For comparison, here's a quick H-Alpha composite:



And now my DS CaK "Near UV Continuum" (lol) attempts:

And now the "Barlowed" image:



As often, I not QUITE sure what happens in the *blurry* regions
between SPOTS? I guess AS!2 fails to "lock on" properly? But! 

P.S. "Lovely Proms"! (Doubtless) to be better presented here! 

[michael.h.f.wilkinson]

Nice work. You have some lovely detail in the H-alpha proms in particular. The "wide-band" ( ) Ca-K disk looks like the focus is better at the top that at the bottom. Not sure what causes this

[xtreemchaos]

great set Chris, cracking proms , I'm really missing not catching them today, but its my turn for the cloud, fog,ect ect but I am serving a curse. thanks ,charl.

[Davey-T]

Nicely done Chris, I was about to start imaging when visitors arrived unannounced, now they've left clouds have arrived unannounced 

Dave

[Macavity]

55 minutes ago, michael.h.f.wilkinson said:

The "wide-band" ( ) Ca-K disk looks like the focus is better at the top that at the bottom. Not sure what causes this

Heheh. Me neither, Michael... There does seem to be a strange "focussing" issue?
Everything seems "pretty much square" with my nice ED66 scope. But I am using
a focal reducer which I then (I forgot!) *left in* behind the added Barlow lens... 

It may be that simplifying the (rather dubious) OPTICS may help a bit though? 

[orion25]

What can I say! Great prominences!  The H-Alpha is my fave but the Ca-K has a certain mystery and focus on form. Keep up the great imaging 

[johnfosteruk]

Great set of images Chris, I was looking at the Baader K-Line myself, I think you've sold me.

[Pete Presland]

Lovely set of images.