Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

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MalVeauX
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Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

Post by MalVeauX » Fri May 25, 2018 11:37 pm

Hey all,

Well, the clouds were thick and lots of rain today, but I got lucky with some sucker holes with some bad seeing around 2pm or so. Took the bait and I went to imaging. I recently added some saddles to my imaging platform for solar so that I could move between several scopes for different purposes quickly. It puts a ton of instruments on my mount, and it weighs a lot, but properly balanced it manages fine, and I'm still able to image reliably with the seeing being my limiter. This way once I get everything together, I can quickly image in several wavelengths and different scales. Today I bounced between HA (656.28nm), CA (393nm) & WL (540nm). I didn't get much time, so I didn't get to complete my sequences, but I got some data regardless. No real noteworth proms that I could find today, at least when I was browsing the limbs around 2pm Eastern time. So I focused on the spots and attempted a mosaic of the full disc.

For the mosaic discs in HA, please take a moment to look at the full resolution images on Flickr or my Astrobin, they're significantly different than these thumbnails, thanks!

Equipment:

Orion Sirius (HEQ5) Mount
Farpoint Side by Side Vixen Saddles (to allow dual mounts)
Celestron 120mm F8.3 with Orion ST8 piggy back mounted (with 60mm aperture mask)
Orion 80mm ED F7.5 APO with 50mm F3.8 finder scope piggy back mounted (with solar filter)
Quark Chromosphere for the HA
Skybender + dual stack of 393nm filters for CA
Baader Solar Film + Baader Solar Continuum filter for WL

The Triple-Threat!

Image

Results (Colored Data):

Hydrogen Alpha

Image

Image

Mosaic made with ST80 (60mm aperture mask, F6.6) with Quark; please take a moment to look at the flickr or astrobin link at full resolution, it's significantly different from these thumbnails!

Image

Image

Calcium

Image

White Light for comparison

Image

Very best,
Last edited by MalVeauX on Sat May 26, 2018 1:46 am, edited 1 time in total.

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MalVeauX
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Re: Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

Post by MalVeauX » Fri May 25, 2018 11:39 pm

Here's the B&W originals:

Image

Image

Image

Image

Image

Very best,

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Re: Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

Post by PDB » Sat May 26, 2018 7:18 am

Hi Marty,

you'r right. The full size ones look a lot better. Seems to be some pattern in the images which is not visible at full resolution but gets intensified with resizing the image. What camera did you use? I see such problems very often with my ASI178, but then it is a sort of crosshatch pattern.

Impressive setup. Surprised that you can drive that load on an HEQ5 type mount.

Rgrds,

Paul

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Re: Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

Post by MalVeauX » Sat May 26, 2018 12:19 pm

Hey Paul,

ASI174MM for everything. The pattern is probably subtle newton rings that my flats didn't totally correct for, and then when stitched they were crossing each other, etc. When scaled down, it shows up more, at full resolution it doesn't seem to show up at least as obvious.

Very best,

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Re: Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

Post by p1taylor » Mon May 28, 2018 9:11 am

Super images.

peter
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Re: Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

Post by marktownley » Mon May 28, 2018 4:32 pm

Very nice set of images Marty!
Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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Re: Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

Post by eroel » Mon May 28, 2018 4:42 pm

Marty:
Beautiful session and set of images.
Regards,
Eric.

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Re: Sunspots AR2712 & AR2711, Full Discs, HA & CA | May 25th 2018

Post by Montana » Tue May 29, 2018 2:13 pm

Wow! these certainly are a treat on Flickr :bow :hamster:

Alexandra

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