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AR's 2806 & 2807 | HA CAK & WL | March 4th 2021


MalVeauX

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Heya,

 

It rained yesterday but was clear this morning today, so I had a chance to look at AR's 2806 & 2807. They're small active regions, with tiny sunspot pores, no visible penumbra developed on either, but lots of lovely plage and filament activity between their poles. Took a look at them in HA, CaK & the Photosphere with a 100mm aperture. Seeing was not great, it was spiking 1.5 to 2 arc-seconds, so the HA is sampled well but the CaK is under-sampled.

 

The HA is higher contrast due to double stacking a custom 1.7A blocking filter (from Apollo Lasky) with a 6A blocking filter together in a Skybender, despite being a single stack etalon imaging train to get near double stack performance levels of contrast.

 

B&W:

 

AR2806_HA_100mmF10_290MM_81frames_PSTetalon_DoubleStackBF_BW_03042021

 

AR2806_HA_100mmF10_290MM_81frames_PSTetalon_DoubleStackBF_BW_Inverted_03042021

 

AR2807_HA_100mmF10_290MM_81frames_PSTetalon_DoubleStackBF_BW_03042021

 

AR2807_HA_100mmF10_290MM_81frames_PSTetalon_DoubleStackBF_BW_Inverted_03042021

 

 

Filament_HA_100mmF10_290MM_81frames_PSTetalon_DoubleStackBF_BW_03042021

 

 

Filament_HA_100mmF10_290MM_81frames_PSTetalon_DoubleStackBF_BW_Inverted_03042021

 

Proms_HA_100mmF10_290MM_81frames_PSTEtalon_DoubleStackBF_BW_03042021

 

Proms_HA_100mmF10_290MM_81frames_PSTEtalon_DoubleStackBF_BW_Inverted_03042021

 

 

Proms2_HA_100mmF10_290MM_81frames_PSTEtalon_DoubleStackBF_BW_03042021

 

 

https://flic.kr/p/2kH371N

 

AR2807_600nmPhotosphere_100mmF10_290MM_41frames_BW_03042021

 

AR2807_AR2806_CaK_100mmF10_290MM_61frames_BW_03042021

 

 

Equipment:

 

100mm F10 Achromatic Doublet Refractor
+ Internal 50mm Baader Red CCD-IR Block Filter (D-ERF) + PST Etalon + Skybender with 1.7A BF & 6A BF Double Stacked + IMX290 (HA)
+ Internal 50mm Baader Red CCD-IR Block Filter (D-ERF) + Baader ND 3.0 Filter + IMX290 (Photosphere)
+ Internal 50mm Baader Blue CCD-IR Block Filter (D-ERF) + Lunt CaK B1200 Module + IMX290 (CaK)


Solarsetup_03042021.thumb.jpg.aef2abd89ad6d3fa41899713d14d0748.jpg

 

Very best,

Edited by MalVeauX
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