White light solar - attempt at e-sketch

[Stu]

Thought I would give this a go again. I’ve attempted to copy images before by way of practise, but this was sketched live at the eyepiece. I use a Remarkable 2 e-ink tablet which has a stylus and various different pen settings. Works ok, sure I can refine it though.

Tak FC-76DC, CoolWedge, Leica Zoom with AP Barcon element in the base. Set at about 3/4 towards max, probably around x80 very roughly.

[josefk]

Very cool. Super.

[RobertI]

Superb Stu. Your inspiring me to try something with my iPad.

[Stu]

Today’s attempt. Only had time for AR3413 before I lost the Sun. No way of easily judging scale vs yesterday so could well be wrong. Left right reversed view.

[JeremyS]

Crikey @Stu, I thought you were tricking us with that first sketch and it was an image.

Excellent job 👍🏻

[Stu]

11 hours ago, JeremyS said:

Crikey @Stu, I thought you were tricking us with that first sketch and it was an image.

Excellent job 👍🏻

You flatter my cumbersome efforts Jeremy, but thank you 🙏. Will see if I can add another today 👍

[Stu]

Some cloud in the way today at times, but managed to add the third day in a row. Nice to see the changes. Granulation clearer today in the clear spells.

[Ratlet]

I love these.  Must give it a try at some point

[Stu]

Had another look late on. Some small changes and an interesting curved line feature showing that wasn’t there before.

Sequence:

15.00

18.15

[JeremyS]

You are on a roll @Stu 👍🏻

[IB20]

Great work these @Stu, are all these with the 76DCU or Q?

[Stu]

57 minutes ago, IB20 said:

Great work these @Stu, are all these with the 76DCU or Q?

Thanks 🙏

These are with the DCU. I am wary of using the Q with a Wedge as I don’t know if the CQ module would overheat or not. I’ve thought about placing a UV/IR cut filter ahead of it which should prevent that, just need to find a neat way of attaching a holder infront of the optics. Unless anyone has proved it works ok/is safe without?

[IB20]

Just now, Stu said:

Thanks 🙏

These are with the DCU. I am wary of using the Q with a Wedge as I don’t know if the CQ module would overheat or not. I’ve thought about placing a UV/IR cut filter ahead of it which should prevent that, just need to find a neat way of attaching a holder infront of the optics. Unless anyone has proved it works ok/is safe without?

Not in my experience, doesn’t seem to make a difference in terms of heat generation. The 10XW frames it perfectly! 

Can I ask what tablet and stylus you use? I had a soft tip stylus with my old iPad and it would make sketching penumbral and umbral tendrils almost impossible. I draw with my finger currently and it’s incredibly inaccurate and clumsy.

[Stu]

3 minutes ago, IB20 said:

Not in my experience, doesn’t seem to make a difference in terms of heat generation. The 10XW frames it perfectly! 

Can I ask what tablet and stylus you use? I had a soft tip stylus with my old iPad and it would make sketching penumbral and umbral tendrils almost impossible. I draw with my finger currently and it’s incredibly inaccurate and clumsy.

Thanks, might have to give it a try if I brave enough.

I use a Remarkable 2 e-ink tablet. It works very well, and the screen is very easy to see in full sunshine. I’m still trying out different methods as it has a wide range of pen types, shades and thicknesses you can select. There is a very fine option which works well for the fine stuff. I’m just trying to show the basics currently!

[IB20]

It’s a great way to document sunspots. I actually think how you’ve logged the daily evolution gives them real life and it’s something I’d love to have a go at next opportunity. 👍🏻

[Gonariu]

Schtches very beautiful, what scope did you use?

[Stu]

1 hour ago, Gonariu said:

Schtches very beautiful, what scope did you use?

These are with a Takahashi FC76DCU ie 76mm f7.5 Fluorite apo. I use a Baader CoolWedge and Leica Zoom with Barlow giving around x80.

[Stu]

Today’s offering here. Lots of change since yesterday.

[Stu]

On a roll here, really fun to see how it has evolved over the five days.

[Stu]

For anyone interested, I did this a while back to show the different pen types available. Some of them let you select grey or white as well.

[mikeDnight]

Truly superb Stu. Reminds me of L.S. Ball's awesome sunspot drawings from over a century ago. 

[Stu]

35 minutes ago, mikeDnight said:

Truly superb Stu. Reminds me of L.S. Ball's awesome sunspot drawings from over a century ago. 

Thank you Mike 🙏

[Roy Challen]

Lots of fine detail there, Stu. Like it😀

[JAC51]

Really really nice individual drawings but it is the development of the Sun spots with time I find most impressive.

Great observations.