Venus on the 16th April 2020
Same technique as in previous Venus post.
This time I managed 12 x 1 minute IR (685nm) video runs and 8 x 2 minute UV (350nm) video runs. All stacked down into 1 red and 1 blue image. A blend of those 2 is mapped to green then an RGB combination performed to give a false colour image.
Venus looks just a little bigger this time as it gets closer in its orbit to us.
Im using FireCapture 2.6 acquisition/control software and aiming to keep histogram levels near 75% of the X-axis on the graph for all exposures.
If weather keeps up might try a deeper IR filter @ 742nm and experiment with a combination W47 violet + IR cut filter instead of UV as well.
Astrometry:
Illuminated fraction = 0.366
Diameter = 31.3 arcsec
Light travel time = 4.4 minutes
Elongation from Sun = 43.7 East
Elevation = 21 degrees
Venus on the 16th April 2020
Same technique as in previous Venus post.
This time I managed 12 x 1 minute IR (685nm) video runs and 8 x 2 minute UV (350nm) video runs. All stacked down into 1 red and 1 blue image. A blend of those 2 is mapped to green then an RGB combination performed to give a false colour image.
Venus looks just a little bigger this time as it gets closer in its orbit to us.
Im using FireCapture 2.6 acquisition/control software and aiming to keep histogram levels near 75% of the X-axis on the graph for all exposures.
If weather keeps up might try a deeper IR filter @ 742nm and experiment with a combination W47 violet + IR cut filter instead of UV as well.
Astrometry:
Illuminated fraction = 0.366
Diameter = 31.3 arcsec
Light travel time = 4.4 minutes
Elongation from Sun = 43.7 East
Elevation = 21 degrees