AR2760 & AR2761 & Proms | HA & CAK | May 1rst 2020

[MalVeauX]

Heya,

Woke up to a fairly good sky this morning, a weird cold snap between storm bands. Seeing was decent at first but had a lot of variability, still, it supported the larger apertures this morning and our two lovely little AR's are still together and rounding the limb as the cycle 25 AR leaves our view by tomorrow or so, but the bigger cycle 24 AR still is showing off a nice plage despite both of them having already lost their small visible umbras from before. There's a really interesting prominence on the Southern limb with some lift off material.

Mixed apertures of 150mm, 120mm and 60mm. Sub-aperture internal D-ERF's only. Seeing conditions ranged from 0.6 sub-arc-second to 1.5 arc-second during the session, all of this data was acquired in from 0915 to 0939 this morning in all the wavelengths and scales presented here.

B&W:

Color:

Seeing Conditions and time frame and length of acquisition (0915 to 0939 this morning), conditions supported high resolution with the 150mm.

Equipment:

150mm F8 Frac + Baader Red CCD-IR Block Filter (sub-aperture internal D-ERF) + Baader 1.25x GPC (F10)
PST Etalon + 10mm Blocking Filter + ASI290MM (HA High Res)

120mm F10 Frac (Masked Aperture) + Baader Blue CCD-IR Block Filter (sub-aperture internal D-ERF)
Lunt CaK B1200 Filter + ASI290MM (CaK)

ED80 Frac + Solarmax 60mm II DS (F10) + PST Etalon + 10mm Blocking Filter + ASI290MM (HA partial disc)

Very best,
 

[richard ashbee]

great set of photos

[MarkAR]

Superb images.

[Pete Presland]

Terrific set of images.