Hydrogen alpha activity on 24.03.2023

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davidem27
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Hydrogen alpha activity on 24.03.2023

Post by davidem27 »

If yesterday morning I tried, with no success, a full aperture shot of the Vixen VMC260L with the intention of immortalizing the granulation, during my lunch break I dedicated myself to our star in the h-alpha line.

The short free time available, made me lean towards mounting the etalon directly on the 120 ED, equipped with a 104 mm frontal ERF and etalon borrowed from the good Lunt LS50T Ha with his B600 blocking filter.

I used the ASI 178 MM after a Televue barlow brought to about 1.4x.

This caused me heavy Newton rings that I managed to eliminate through the miraculous flats of Firecapture (which didn't always give me joy, on the contrary).

The results leave me largely satisfied, perhaps for the first time since I have taken the Sun in this line of the spectrum.
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2023-03-24-1230_Ha_AR3258_bn_pistritto.jpg
2023-03-24-1230_Ha_AR3258_bn_pistritto.jpg (435.77 KiB) Viewed 1104 times
2023-03-24-1228_Ha_AR3262_bn_pistritto.jpg
2023-03-24-1228_Ha_AR3262_bn_pistritto.jpg (522.82 KiB) Viewed 1104 times
2023-03-24-1227_Ha_AR3256-57-59_bn_pistritto.jpg
2023-03-24-1227_Ha_AR3256-57-59_bn_pistritto.jpg (510.14 KiB) Viewed 1104 times
2023-03-24-1224_Ha_AR3260_bn_pistritto.jpg
2023-03-24-1224_Ha_AR3260_bn_pistritto.jpg (547.99 KiB) Viewed 1104 times


White light: Skywatcher 120 ED and Borg 76 ED with Baader Herschel Wedge and filters
H-alpha: Lunt LS50T Ha BF600, 120 ED modified by Lunt etalon. Thousand Oaks 0.9 Å Prominance filter
Calcium II K: Lunt B1200

www.volpetta.com

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Re: Hydrogen alpha activity on 24.03.2023

Post by pupak »

Superb pictures.


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Re: Hydrogen alpha activity on 24.03.2023

Post by Petrus »

Excellent results!


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Re: Hydrogen alpha activity on 24.03.2023

Post by EGRAY_OBSERVATORY »

Excellent presentation David.

Thanks for sharing

Terry


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Re: Hydrogen alpha activity on 24.03.2023

Post by BGazing »

Fantastic! Is this single or double stack...has to be double, right?


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Re: Hydrogen alpha activity on 24.03.2023

Post by MapleRidge »

Superb series of images David...well done :bow

Brian


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10'x15 Roll-off Roof Observatory
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Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
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