BTW 3 separate runs

not much going on up there so I spent time experimenting on H-beta freq brightness
dark medium brt

7 16 caK its quiet up there maybe one of you guys and do a sun dance to wake it up

excellent first

7 14
its going dead again B&W shows prom on left

cak 7 13 nice prom lower left

thx

7 9 16 caH

july 4 H K

ha! - Mark your right
I didn't notice until you guys pointed them out


yea with 2400 lpmm grating - caK caH more narrow in SHG than commercial stuff even though I have ability to double stack caK line with filters

thx Montana
july 1 image Al caH

6 28

that Al then caH

6 26

oh
so im wrong
its actual distortion of f line


thx for reply

did you ever see this effect ?

below is image from Youngs book (also page 61 in Ken's "Imaging...") let me know if following is true 1) I assume he has slit on a prom at edge of sun 2) part of prom is in one direction and then in other due to doppler 3) its the image of prom itself and not the Hbeta line being distorted 4) did he...

caK note filament (dark thing)

6 24 caH

my scope rotates up to about 200 degrees

then it has a variable slit
i use eq mount with goto to position
slit and track

6 23 sharpened up
caH line before SW magic and after

a little later that day small hot spot K line H line and spectrum view

sun still dead

must of touched focus a bit

in honor of Higgins prom observation 150 years ago (feb 19 I believe)
i built a solar spectroscope with variable slit to do same


40mm scope just like PST


how come they did not make something like this then?

your item at end of solarchat explains
clearly
also
my photo and yours are similar

no just a little calcium activity

I think (reasonably sure) I replicated this
what does it mean (tell)? books brings it up but no explaination