Celestial hemisphere:  Northern  ·  Constellation: Gemini (Gem)  ·  Contains:  Gem A  ·  IC 443  ·  The star Propus (ηGem)
CMOS Blooming?, Fabio
CMOS Blooming?, Fabio

Equipment

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Acquisition details

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Description

I encountered a subtle issue with the sensor. The brighthest stars have got an horizontal bleed resembling the CCD blooming effect.

All the frames of the first batch was affected.

The problem disappeared the same night switching off/on the camera.

All the frames of the second batch was not affected.

I also did the bias frames before turning off the camera, they exibit the same bleed but of course no stars.

Camera: Sony ILCE-7RM2 (stock)

Exposures: 327x30" ISO640 + 37x120" ISO640

Ambient temperature: -8°C windy, dry.

Power supply: dummy battery at 9-12V.

Does anyone else have ever seen something like that?

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CMOS Blooming?, Fabio