It's been storming lately a lot, hurricane season and all, our local hurricane finally downgraded to a tropical storm again and is south of me. While hurricanes are nasty for weather, they're great for seeing conditions as they push the air around making laminar flow here and there which leads to rather good seeing. I recorded some of my best seeing averages with the SSM today, right at sunrise over my tree line, for about an hour. Almost all of it was sustained sub-arc-second and was seeing quite a bit of 0.3" to 0.4" moments on the monitor. Anyhow, it's really nice that AR2768 is around with a lovely mottled plage and AR2769 is chasing it with a wee spot and some interesting plage area too. The large prom is gone, so I wasn't able to see it due to weather prior. With such seeing today I was able to get enough data to do a high resolution mosaic of AR2768 & AR2769 as one image. I then gathered just AR2768 in Ha & CaK and then did some smaller image scales with an 80mm and 60mm setup for comparisons as the activity and filaments makes for an excellent wide field view. For the high res data on a 150mm aperture refractor, a single 50mm internal sub-aperture D-ERF was used for both the HA & CaK.
B&W:
High Res AR2768 & AR2769 HA Mosaic:
(Click the link for the full resolution)
AR2768:
AR2768 & AR2769 Partial Discs:
Colored:
High Res AR2768 & AR2769 HA Mosaic:
(Click the link for the full resolution)
AR2768:
AR2768 & AR2769 Partial Discs:
Seeing Conditions:
- SeeingConditions_08022020.gif (60.06 KiB) Viewed 954 times
Equipment:
150mm F8 Refractor
+ Baader Red CCD-IR Block Filter (50mm sub-aperture internal D-ERF) + Baader GPC 1.25x (F10) + PST 1A HA Etalon + 10mm BF + ASI290MM
(Masked to 120mm F10) + Baader Blue CCD-IR Block Filter (50mm sub-aperture internal D-ERF) + Lunt CaK B1200 + 2x Barlow (F20) + ASI290MM
80mm F7.5 Refractor
+ Solarmax 60mm II Etalon (F10) + PST 1A HA Etalon + 10mm BF + ASI290MM
+ Lunt CaK B1200 + ASI290MM
- SolarSetup_08022020.gif (188.68 KiB) Viewed 954 times
Very best,
