SolarChat!

Thanks John!

Great captures John! Good to see the numbers going up.

Half an hour well spent James, glad you got a view in.

Great results Brian, thanks for sharing!

DeepSolar64 wrote: ↑Tue Apr 23, 2024 1:55 am Now only if I can find a large plastic jar lid that will fit the dew shade on the C102. 66mm would be an improvement over 40mm.

Cutting out a cardboard ring will be easier.

Great results thanks Eric!

Nice results! Congrats on the new CaK filter!

Lovely disks here Arne, thanks!

Thanks guys, appreciate the comments.

These are excellent thanks Arne!

Sunday was forecast to be cloudy, but by some miracle by 11am it cleared up partially. A decent wind from the northeast with scudding clouds meant the seeing was never going to be great, but transparency was very good and so I decided to dip into the blue end again. Still tweaking the CaK setup, and...

Lovely shots Alexandra, wish you had got longer. Clouded for me around 11am.

DeepSolar64 wrote: ↑Mon Apr 22, 2024 1:22 am My C102 is an F10 so it may actually do quite well for K-Line imaging. I also have a 60mm F12 but it has an 0.965 focuser. The Antlia wedge will not fit it. That would be even better if it would.

Yes, the C102 will do well, even better if you stop it down to 66mm

Nice to read and see!

Great to see thanks Pedro!

Very good thanks Peter!

Top shots thanks Wayne!

A nice collection Pedro!

Re: 22 April 2024 Cracking images thanks Ralph!

Cracking images thanks Ralph!

Very good indeed thanks Dennis!

Re: Full Disc 21-04-2024 Always love to see your disks thanks Rainer!

Always love to see your disks thanks Rainer!

An excellent set there Eric!

Thanks guys, just about to process yesterdays CaK images.

Super addition!

Re: Sun of 04.21.2024 Lovely capture ROss!

Lovely capture ROss!

Re: Sol 21-4-24 Excellent disks Steve!

Excellent disks Steve!

Very good Paul!

Thanks Stu!

Re: Ha from 24-3-24 Lovely disks thanks Steve

Lovely disks thanks Steve

Lovely images thanks Peter

Very nice thanks

Thanks everyone, appreciate your comments. I hope to image again soon with the big scope.

Thanks folks.Appreciate your comments.

If seeing supports it, what happens if you image with the full aperture, do you observe a large decrease in contrast ? What is the the ideal focal ratio for k line imaging ? If you image down in UV at f6 (the native focal ratio of this scope) then the image is full of spherical aberation, which res...

Thanks guys, appreciate your comments!

Thanks Maurits!

Lovely additions thanks!

Following on from previous post with Saturdays Ha shots, here is the sequence from CaK from the day. I was optimistic of reasonable seeing, so dipped my toes in the water with the CaK full disk, but instead of the regular Skywatcher ED80 at f15 I decided to use the APM 100/800, stopped down to 53mm ...

Enjoy the deep sky and F1 Rainer!

Re: 21 April 2024 These are excellent thanks Ralph!

These are excellent thanks Ralph!

Hi All, Saturday was forecast a nice day, and, depsite cloud bubbling later in the day turned out quite nice. A lovely day to be out in the (chilly!) spring sunshine. I'll start off backwards time wise, with the full disk for the overview, this was shot last as I was reserving the better seeing of t...

Re: Ha and CaK disks 4/20/2024 These are great Warren!

These are great Warren!

A lovely set of disks thanks Arne!

An excellent set of images here Pedro!

Lovely! I like it!

There's a lot more contrast there JAmes! Good result!

Hi Ivan, yes, M80x1mm

Very nice adaptation there Rainer! THanks for sharing!

The ITF on that blocker looks rusted to me, it seems very cloudy.

Lovely shot Stu! You did well to image before the cloud got you. It's just arrived here and cut my session short.

The ghosting could be coming from the filters, but also it could be coming from spurious light reflecting off the inner walls of the OTA and/or the Lunt module tube wall. Advanced high absorbing black paint on all internal surfaces could help reduce the glare. My money is on the 2 'ERF' filters in ...

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