Sunspots today

The sunspots have been pretty sparse during this solar maximum. A few freckles popped up over the past few days, so I thought I'd take a shot.

Canon 7D / EF 100-400L lens / Home made Baader Safety Film filter / EXIF attached

Nice capture Jim! They do look good at the moment, don't they?

I also grabbed a shot with my 70-200 f/4L and home made Baader filter:

IMAGE LINK: https://flic.kr/p/nX2t​vm

For some reason your sun is upside down. Oh wait.. It's where we were standing Good shot!

Did you colour your image at all? My Baader film filter produces white images.

nice pix to both of you


Dave

How to make Baader filter?

Isn't that the big dipper? Haha ... Nice spots. They are massive!

HKFever. You can buy the film from astronomy shop or possibly ebay?
$30 for an A4 sheet

Nice shot, lots of spots!

Wondering what kind of lens should I use for sun, will my Sigma 120-300 f/2.8 + 1.4x tc be enough (approx. 420mm)? How much do you need to crop it?

I think you two need to clean your sensors!

haha great shots, both of you

Photo123abc wrote in post #17066284
Nice shot, lots of spots!

Wondering what kind of lens should I use for sun, will my Sigma 120-300 f/2.8 + 1.4x tc be enough (approx. 420mm)? How much do you need to crop it?

That will work. I'm using an EF 100-400L at 400mm.

For a size reference of what to expect, my captured images of the sun are about the same size as my 400mm images of the moon. So, look at your moon shots and that's about the size you can expect.

Jim_T wrote in post #17071158
That will work. I'm using an EF 100-400L at 400mm.

For a size reference of what to expect, my captured images of the sun are about the same size as my 400mm images of the moon. So, look at your moon shots and that's about the size you can expect.

Thanks.