Solar Minimum Sunshine 9th February

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marktownley
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Solar Minimum Sunshine 9th February

Post by marktownley » Sun Feb 10, 2019 6:52 pm

Saturday morning was one of those race against time mornings. I woke far too early - Mrs Townley was not impressed, either way I enjoyed watching it get light with a mug of coffee. I could see on SAT24 that it was clear (then), but also cloud was coming fast. I set up with the SM90 and the PGR GH3 ICX814, and by then it was a case of pressing the stop start button in Firecapture to avoid the scudding clouds.

ImageHa-FD.composite-bw by Mark Townley, on Flickr

ImageHa-FD.composite-colour by Mark Townley, on Flickr

Nothing to see here, move along... Saturdays disk is fairly typical of a solar minimum sun - the disk looks blank. There is a small region of very decayed plage from active regions several rotations ago but that it is it on the surface. The proms were the star of the show, and looked fantastic through the SM90 with an 18mm Coronado Cemax eyepiece. This image is a composite disk / proms shot with the PGR GH3 ICX814 camera. Poor seeing and haze were the order of the morning to give imaging that extra challenge, but it is nice to see the sun rising higher and higher in the sky with each passing week. Wonder how long these conditions will last until we see the signs of cycle 25 becoming more predominant and obvious in the solar northern hemisphere?
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Christopher
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Re: Solar Minimum Sunshine 9th February

Post by Christopher » Sun Feb 10, 2019 7:33 pm

Mark,
The proms look great and you captured that decayed AR very nicely. Glad to see you’re getting a little sky time again. :cool:
Christopher

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Re: Solar Minimum Sunshine 9th February

Post by marktownley » Sun Feb 10, 2019 7:45 pm

Thanks Christopher, if the weather is obliging i'm now able to get back into solar observing on a weekend if the skies are clear...
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torsinadoc
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Re: Solar Minimum Sunshine 9th February

Post by torsinadoc » Sun Feb 10, 2019 8:22 pm

What great proms
Lunt 80 DS
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Re: Solar Minimum Sunshine 9th February

Post by MalVeauX » Sun Feb 10, 2019 8:37 pm

Really nice evenness on that disc Mark!

Very best,

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Re: Solar Minimum Sunshine 9th February

Post by MAURITS » Sun Feb 10, 2019 9:00 pm

Very nice FD images Mark ...
Regards,
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Re: Solar Minimum Sunshine 9th February

Post by David_The_Bears_Fan » Sun Feb 10, 2019 9:21 pm

Good result Mark, good to see the Sun is high enough (just) for you to start imaging again.
David

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Re: Solar Minimum Sunshine 9th February

Post by ffellah » Sun Feb 10, 2019 9:55 pm

Hi Mark: good results, the 814 camera seems to be working well with the SM90.

With that size pixels, can it also be used with the HaT, maybe with the 0.7 focal reducer ?

Franco

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Re: Solar Minimum Sunshine 9th February

Post by eroel » Mon Feb 11, 2019 1:39 am

Mark:
A very nice session, clean and sharp FD´s
It is very annoying to pause and start every time a cloud passes by.
Best regards,
Eric.

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Re: Solar Minimum Sunshine 9th February

Post by Montana » Mon Feb 11, 2019 1:03 pm

That's a great full disc Mark, fantastic proms :hamster: I remember at the start of solar cycle 24 you were one of the first people to catch a massive prom on the Sun, wasn't it used on Spaceweather or NASA or something?
:bow

Alexandra

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Re: Solar Minimum Sunshine 9th February

Post by MapleRidge » Mon Feb 11, 2019 6:01 pm

Hi Mark...

Great capture with the proms making up for the slow disk activity :bow

The new scope and camera certainly make a great pair!!!

Brian
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Re: Solar Minimum Sunshine 9th February

Post by marktownley » Mon Feb 11, 2019 8:23 pm

Thanks all! Yes, I remember that prom Alexandra, although I was just looking through my website and there were quite a few big proms at the start of 24....
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Re: Solar Minimum Sunshine 9th February

Post by Carbon60 » Mon Feb 11, 2019 9:16 pm

That’s a very nice disk, Mark.

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Re: Solar Minimum Sunshine 9th February

Post by marktownley » Mon Feb 11, 2019 9:32 pm

Thanks Stu.

A closeup of the relic active region, SM90, 2.5x barlow and PGR Blackfly IMX249 camera.

Imageha-close-bw by Mark Townley, on Flickr

Imageha-close-colour by Mark Townley, on Flickr
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Re: Solar Minimum Sunshine 9th February

Post by ffellah » Tue Feb 12, 2019 1:30 am

Your SM90 rocks, Mark. Pretty amazing for a single stack.

Franco

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Re: Solar Minimum Sunshine 9th February

Post by marktownley » Tue Feb 12, 2019 5:38 am

Thanks Franco, I probably won't use it with the HaT even down at f22. 9fps is way too slow at that scale, it works for full disks but hi res needs a higher cadence.
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