Contains:  Solar system body or event
Sun, 21042018, doublestack H-alpha, BartM

Sun, 21042018, doublestack H-alpha

Sun, 21042018, doublestack H-alpha, BartM

Sun, 21042018, doublestack H-alpha

Equipment

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Acquisition details

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Description

One of the first doublestack images I made with the 150mm f/8 Skywatcher. Doublestack consists of two PST-etalons. In between them is a circular polarizer mounted to hold back internal reflections. Is still a battle....

Some details:

Frames captured=4865

File type=SER

FPS (avg.)=162

Shutter=5.636ms

Gain=506 (16%)

Gamma=774

Compared to the single stack, the shuttertime is about 6 times longer.

Comments

Histogram

Sun, 21042018, doublestack H-alpha, BartM