Solar prominences (23 January 2021) (rdk_CA)

Contains: Solar system body or event

Solar prominences (23 January 2021)

Acquisition type: Lucky imaging

Solar prominences (23 January 2021)

Acquisition type: Lucky imaging

This image depicts three prominences, captured on 23 January 2021. This is my first attempt at solar imaging with a DayStar Quark chromosphere filter. I attached the filter to the rear port of my 80 mm f/6 refractor and used a 50 mm UV/IR cut filter as an ERF. The images were acquired using a CMOS camera (ZWO ASI 178M.)

This image is a composite of two exposures, the first capturing the surface details, and a second capturing the prominences. Both images were taken with a gain setting of 179 (35%).

Prominence: Best 25% of 97 frames captured (100 ms/frame exposure, 15 s total)

Chromosphere: Best 25% of 227 frames captured (13.8 ms/frame exposure, 15 s total)

The two images were combined as layers using Corel Paintshop Pro. I inverted the image of the solar surface and then artificially colorized it. The inverted image seems to provide a more gradual transition to the brighter prominence layer. (I left this layer in monochrome, as this seemed to show the faint details more clearly.)

My previous experience with solar imaging is with a simple 40 mm single stack solar telescope. The increase in resolution by switching to an 80 mm aperture is very impressive, as is the improvement in contrast that can be achieved through this filter. I am excited to gain further experience using this setup.

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Description: Instrumentation for my solar images

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Solar prominences (23 January 2021)

Solar prominences (23 January 2021)

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