Sun & AR2778 29th October

[PeterM]

I was able to get some single stack data on AR2778 juts prior to the morning cloud rolling in. I didn't do double stack today as I wanted to try and bring out those black spots. By the time I get to see Sol again will be middle of next week if clouds allow and AR2778 will be a memory. Bring on the next one!

[Eris]

Great imaging Peter. That AR is certainly proving good value.
I particularly like the contrast in image N°3.
Thanks for posting your images.

[multiweb]

Great close up Peter. :thumbsup: What FL are you imaging at? I'd assume you need to do flats for solar imaging correct?

[PeterM]

Thanks Gerard, yes AR2778 has certainly been good for the learning curve this week!

[PeterM]

Hi Marc and thanks for looking. I am using a Lunt LS60THa that is native F8.3. With the 2.5X Powermate am now at 1250mm F/L F20.8
I had wondered about needing flats as I have read that they can make for improvement but have not bothered at this stage, though I am noticing some uneven illumination across the disc. May well try this in coming weeks.

[multiweb]

ah ok, I was more thinking of dust spots. I always get these on some of the filters.

[PeterM]

Yes I suspect they are there as well, so will need to do some youtube research on Solar flats... apparently the opaque plastic fruit n vege bags from the rolls in Coles make the right cover!

[Merlin66]

Marc,
When using the H alpha etalons, there’s no “filter” involved.
Any dust donuts are usually are associated with the cover glass on the camera.
Preparing “plastic bag” flats are far more successful when you image surface images, full disk are problematic.

[PeterM]

One of the guys (JasonH) on CNights has compiled this from NASA Solar Dynamics Observatory data on AR2778. Will be worth watching as it approached the limb.
https://www.youtube.com/watch?v=PXCEntojEhw&feature=youtu.be

The explosive new AR in the video has now been named AR2779 (courtesy Dan from CNights)

[AstroJunk]

:thumbsup:

[Merlin66]

With AR 2779, things seem to be hotting up!!
Great time to be solar observing.

[PeterM]

Yes indeed! Hope you and the other Sol people here get something today. Im not home all day and its clear as grrrrr.

[Saturnine]

:thumbsup: Loving all the solar images from the past few days, especially while it has been cloudy here.
The sun has come out to play today, at last, so hope to get some images shortly.