Venus Transit 2012
by Alejandro Tombolini
Introduction
Publicated in Monthly Contest - Complete description of the transit image - Main notes: FourierTransform to eliminate pattern. Date: Jun 2012
Image Details
- Object: Sun and Venus.
- Camera: Point Grey.
- Telescope: Lunt 60 mm - Focal Length 500 mm - f/8.3 - Barlow 2x.
- Images: 934.
- Total time: 31 seconds.
- Credits: Andrés Vattuone and Alejandro Tombolini
- Program: Registax - PixInsight.
Processing
The .raw images where converted to .fit with BathConvertion Script and the aligned and integrated with Registax.
FourierTransform. I tried to eliminate a faintest lines in the background.
The new image without lines.
Built a mask to be used to give a white effect in the Sun. Venus is deleted in the mask because the white effect I am looking for is only in the Sun.
Build another mask to be used protecting the background and give color only to the Sun.
ChannelCombination.
HistogramTransformation protecting the background whit mask 2.
HistogramTransformation protecting the background whit mask 1 - Note the value of Midtones.
MultiscaleMedianTransform for increasing details without mask.
New mask to protect background.
MultiscaleMedianTransform to Sun with mask.
New mask to protect background and Sun.
MultiscaleMedianTransform to increase details in the solar flares.
Noise reduction.
ExponentialTransformation protecting Sun with mask 1.
New mask to protect background.
UnSharpMask.
Little crop using DynamicCrop tool.
Signature.
Final image.
