Disks in WL, CaK and Ha and animation of NW Limb 9/13/2022

[rigel123]

The animation was recorded between 15:50 - 16:34 UTC and is a bit skippy due to having to pause recordings to let the big, fluffy, annoying cumulus clouds to pass! Stuff was happening quickly and I finally gave up as the gaps between clouds got smaller so I simply caught the full disk shots when I could. It appears that some post flare loops deteriorate and are replaced by some additional surge spikes in the animation.

FD WL

FD-WL-9-13-2022.jpg (197.15 KiB) Viewed 527 times

FD CaK

FD-CaK-9-13-2022.jpg (254.88 KiB) Viewed 527 times

FD Ha

FD-Ha-9-13-2022.jpg (346.26 KiB) Viewed 527 times

NW Limb Animation
NW Limb Animation 9 13 2022 by Rigel123, on Flickr

Link to Astrobin

[JohnW]

Really nice set of images - would be nicer to see in color. Thanks, John W.

[rigel123]

Thanks John! Yeah, I’m kind of a B&W guy!

[marktownley]

Nice disks Warren! Are you using the Orion at 80mm for the CaK with the 174 camera?

[Montana]

What a joy to see these, brought a big smile to my face

Alexandra

[MAURITS]

Great images Warren.

[Martin_S]

Great Imaging Warren, the animation is great.

[torsinadoc]

Excellent catch with the loops and nice images

[rigel123]

Thanks all! Mark, yes I was shooting at 80mm. I actually made a 40mm mask and compared the images on some earlier captures and really could not see a difference so just stopped using it.

[ffellah]

Fabulous animation and great stills, Warren. Well done !

Franco

[rigel123]

Thanks Franco!

[arnedanielsen]

Good session Warren!

Best regards,
Arne

[Sumpy]

Excellent images, and the animation is great, Warren!

[rigel123]

Thanks Arne and Brian!

[DeepSolar64]

The loops I barely missed! Thanks for the view(s) Warren,

[Carbon60]

Another great animation and very nice still images, Warren.

Stu.

[christian viladrich]

Nice limb animation Warren. Well done !

[rigel123]

Thanks James, Stu and Christian!

[marktownley]

Mark, yes I was shooting at 80mm. I actually made a 40mm mask and compared the images on some earlier captures and really could not see a difference so just stopped using it.

Hi Warren. You won't see a difference, you're hugely undersampling with the 174 with CaK full disks at a focal length of 600mm, your actual resolution you will achieve is closer to 20mm (properly sampled). Now i'm not suggesting you make a 20mm aperture stop, but stopping the scope down (40mm if you have a mask of that size) will redude spherical aberation which will reduce softeness (that is what SA does in CaK) in the image. Don't expose the histogram more than about 90% in capture either.

HTH!

Mark

[rigel123]

Mark, yes I was shooting at 80mm. I actually made a 40mm mask and compared the images on some earlier captures and really could not see a difference so just stopped using it.

Hi Warren. You won't see a difference, you're hugely undersampling with the 174 with CaK full disks at a focal length of 600mm, your actual resolution you will achieve is closer to 20mm (properly sampled). Now i'm not suggesting you make a 20mm aperture stop, but stopping the scope down (40mm if you have a mask of that size) will redude spherical aberation which will reduce softeness (that is what SA does in CaK) in the image. Don't expose the histogram more than about 90% in capture either.

HTH!

Mark

Thanks for the input!