5000 pix mosaic of the sun in H-alpha (Tommi R)

Contains: Solar system body or event

5000 pix mosaic of the sun in H-alpha

Revision title: PNG file

Acquisition type: Lucky imaging

5000 pix mosaic of the sun in H-alpha

Revision title: PNG file

Acquisition type: Lucky imaging

Solar season opening image: a 28 subframe mosaic of our nearest star in hydrogen alpha. This was recorded in 19th of May between 11:25 and 11:45 from our apartment's asphalt parking lot (not not really the best location thinking thermals).

I used my trusted equipment of a 102 mm f/7 ED double OTA, an 11 year-old Quark and ASI174mm. Exposure time was 5.3 ms, gain 125 (31 %) and I recorded 20 sec videos at around 161 FPS. All of this resulted in 197 GB of data.

Autostakkert4! was used for stacking the videos with flats, best 400 frames were put into each subframe stack and then ImPPG was used for initial processing. Mosaic and processing were made in Photoshop where I also sharpened the image with USM and high pass filters to the final status and added colors.

In May we have fairly good seeing which surely helped also with this one. Its good to start the season with this, hopefully more imaging sessions are available this year than there was in 2023.

Original
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Final
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Title: Black and white version

Description: B&W is better for some aspects to see details on the disk

Uploaded: ...

C

Title: PNG file

Description: Maybe this is a bit better quality than the jpg file which seems to lack some details even in full size.

Uploaded: ...

Cloudy Nights
Solar System Imaging
Sun in hydrogen 656 nm light
Narrowband Solar imaging
DayStar Quark and Quantum Filters

Solar hydrogen alpha details

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5000 pix mosaic of the sun in H-alpha

Revision title: PNG file

5000 pix mosaic of the sun in H-alpha

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5000 pix mosaic of the sun in H-alpha

Revision title: PNG file

5000 pix mosaic of the sun in H-alpha

Revision title: PNG file

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Acquisition details

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B

C

Histogram

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