Saw the sun again today! Surprise after a forecast for continuous cloud
Robert

1019 19_Oct_18_125039_lapl4_ap572 by robertarnold, on Flickr

Thanks for the comments. Its the seeing that makes it work.

I love the detailed prominence, great
Robert

Very nice shots
Robert

Today was moderately clear weather, high pressure but showers and a gusty wind. The sun only getting to just over 20 degrees altitude. However I have been noticing that the SSM shows quite good readings despite all this at around 1 arcsec. So I tried the SW200 (f1000mm) Newtonian with ND3.8, Baader ...

I tried a secondhand Celestron 9.25 with ND3.8 UV/IR and Baader continuum with TVx5 or Barlow x3. It lacked contrast and was very difficult to focus. Stacking software failed to latch onto the granulation cells. After reading about Solar Newtonians on the forum I got hold of a very cheap 200mm f1000...

Stunningly good
Robert

Stunningly good
Robert

Lovely sequence, it shows how interesting off-band images can be, especially animated. I have noticed that but not acted on it very often.
Robert

Lovely animation and great additions. I would add that ImPPG is very good for aligning frames too, anyhow all very interesting
Robert

menu item screen to use for aligning

Excellent clear results and presentation, thanks
Robert

Beautifully done

Lovely

Great shots anyway!

Wonderful capture

Superb detail in the proms
Robert

Thanks Eric, Stu, Franco and Alexandra

Superb shots. Great report!
Robert

Lovely to see the proms
Robert

PDB wrote: ↑

Sat Sep 08, 2018 4:00 pm

Good catch Robert. The group has now numer AR12721

Cloudy here ...

Paul

Thanks Paul

With narrowish band filter eg Baader Continuum an achromat is probably ok but best optical quality that is affordable is a good plan for detailed imaging in WL. Without the narrow band filter APO will be better. Probably the wedge size is dependent on the camera chip size. Smaller CCD chip allows a ...

Great results and I think your seeing must be good to get granulation like that with 130mm aperture. No boring at all!
Robert

Thanks Mark. It was lovely and warm but now cool and cloudy!

I was expecting a spotless sun but as the seeing was ok and I tried the Newtonian 200mm for granulation in white light. I was amazed to see a group of small spots. I did a CaK FD to locate them and a cropped view in CaK to compare. Robert SW200 ND3.8 Astrosolar, Continuum, UV/IR, TV x5 https://farm2...

Great results, a pleasing subject!
Robert