2021-06-02 - AR2827 in CaK

[JochenM]

As mentioned in my previous post, yesterday's CaK imaging wasn't a great success; so I was eager to try again today when the forecast predicted fairly promising conditions.

I might have gone a bit overboard with data collection, coming in at just shy of 220Gb of captures (did CaK only today). But in the end, it did give me some nice data to work with; so worth it!

Setup: 150mm achromat @ 120mm f/15, Lunt CaK b1800, Baader Blue CCD filter, ASI290.

Thanks for looking.

[EGRAY_OBSERVATORY]

Thanks for your excellent-efforts for these captures Jochen.
Nice clear and sharp showing as a close-up.

Thanks for sharing
Terry

[DeepSolar64]

That 6" achro did a wonderful job!

[Carbon60]

Excellent, Jochen. These look great.

Stu.

[JochenM]

Thanks Terry/James/Stu.

[marktownley]

Looking good Jochen!

[ffellah]

Lovely images Jochen

Franco

[yltansg]

Hi Jochen,

220GB of data!!. That is half my HDD for data. Always great to see the fibrils out of the sunspot.

Great job!

Alfred

[JochenM]

Thanks Mark/Franco/Alfred.

I was simply launching a capture everytime the seeing looked decent (just eyeballing it on the screen, don't have an SSM). It adds up quickly

[krakatoa1883]

Fine images, the structure of the penumbra has been well resolved.

[Montana]

Superb and very fine quality with 220GB do you have a timelapse then

Alexandra

[JochenM]

Thanks Raf/Alexandra.

The captures were a bit all over the place (time in between) with a bunch of them being a blurry mess as well. So no timelapse I'm afraid.

[eroel]

Jochen:
Beautiful captures.
Well done.
Eric.

[VasilevIvan]

Jochen, nice captures in CaK! Would you use some filter in front of the main lens or you just reduced the aperture from 150mm to 120mm? I mean possible problem with the B1800 filter overheating.

Best wishes, Ivan.

[p_zetner]

Very nice calcium shots, Jochen.
Cheers.
Peter

[JochenM]

Thanks Eric/Ivan/Peter.

Jochen, nice captures in CaK! Would you use some filter in front of the main lens or you just reduced the aperture from 150mm to 120mm? I mean possible problem with the B1800 filter overheating.

Best wishes, Ivan.

Hi Ivan.

That would indeed be a legitimate concern here. What I've done is place a Baader Blue CCD filter in front of the B1800 module, acting as a sub-aperture ERF.