AR2782 & Upcoming AR2783 in HA & CaK | Nov 17th 2020

[MalVeauX]

Heya,

Well, after over 32 named storms, the latest one just yesterday was a category 5 hurricane (Iota) that skipped past Florida and plowed into Nicaragua and that area, again, poor souls. Just before that, hurricane Eta hit my area directly, but thankfully calmed to a tropical storm rapidly and didn't do anything but cause rain for days. My weather has been awful this year, very little chance to do anything with the sky. Today however was clear and our temperatures dropped into the 50's (F) which is "chilly" for Florida. When it suddenly gets chilly, the seeing is usually bad as there's two large pressure areas pushing on each other making turbulence and wind. Hopefully we're done with storms, but every week we're getting at least 1 or 2 major storms here near the Gulf of Mexico.

I went for a smaller aperture, 120mm, to even attempt to take a look. Seeing was poor for sure, but fast FPS and lucky imaging prevails. Took at look at the remnants of AR2782's plages in HA and CaK, and you can see the full spot of AR2783 coming around the limb right now, it is large enough to have a visible umbra & penumbra and appears to be another cycle 25 region. It's tossing some interesting little surge prominences out as it rounds the limb.

B&W:

Colored:

Equipment:

120mm F10 masked achromatic doublet
2" Baader Red CCD-IR Block Filter as internal primary D-ERF for HA
2" Baader Blue CCD-IR Block Filter as internal primary D-ERF for CaK
PST etalon + 10mm BF for HA
Lunt CaK 12mm module for CaK
ASI290MM Camera

Very best,

 

[Luke]

Wow, they're sweet shots! The PST mod to my eyes is returning fab detail.

My largest frac is 120mm and I am not at all tempted by the Sky-Watcher Evostar 150ED DS-Pro... (I love the SW 100 F9 and 120 F7.5!)

I hope you get some calmer weather.

Edited November 19, 2020 by Luke