The Sun - 16th June 2021

[David Smith]

Pushed for time today so a more limited set.Did not really have the time but wanted to get something in before the good weather breaks. Still lots of activity with a nice big spot and some great prominences. I had hoped to try an H alpha full disk mosaic but the laptop battery had other ideas Seeing could have been better and there was a bit of a breeze, on the one hand this helps tame the seeing but brings it's own problems if too strong. All images shot with the Evostar 120 using the ASI178 behind either the Lacerta WL wedge, Lunt Ca-K module or Daystar Combo Quark. Where close ups are taken I added in the Explore Scientific 2x barlow / focal extender. Captured in Firecapture, stacked in AS!3, sharpened in ImPPG and finished in Gimp2.10. The 6 pane mosaic was stitched in AutoStitch.

First up, Ca-K 6 pane FD

Ca-K close ups were all shot using 2x2 binning which helps to keep the exposure time down and speed up the capture

 

White light images

Tweaked my H alpha colouring today as I was not really happy with the results. Still not happy but will experiment! Some newtons rings showing in this image, usually I take more time aligning the diagonal / barlow / quark / camera before capture but I was aware of the impending failure of the laptop battery so rushed this one a bit. I was just lining up for a prom capture when the battery quit on me.

 

[bob-c]

Nice images David.

Bob.

[Freddie]

Nice series. I captured that arching prom in Ha so will be interesting to see how they compare.

[Davey-T]

Nice set David, been pushed for time all week so still haven't got a shot at it.

Dave

[Ibbo!]

Nice set David.