金星 ALPO-Japan Latest

Venus Image 2015/07/01(UT)

Anthony Wesley,Stanislas Maksmowicz,Thomas and Florian Winterer
Anthony.W,S.Maksmowicz,Thomas.Winterer

Anthony Wesley (406mm Newton)

[Anthony Wesley,Murrumbateman Australia]
≪アンソニ  オーストラリア≫

Stanislas Maksymowicz (100mm refracter)
Here is the report performed last 01st july with the 100ED refractor.
It was refrigerated before use at a frizzer 15°C and used Under an
atmosphere of 39°C.
Seeing are well reported,so fixed images some times.
Aluminium sheet was set on the tube to prevent IR from the sun heating.
The dark side was lighted faint to very faint (the B channel on this time,
R channel the day before). A mis-balance of the lighting was noted as shown
from an hemisphere to the opposite.
Some dark markings on this light commence to appear. Please note a certain
correspondance with the markings noted on the lighted side by direct sun.
Cusp caps appeared clearer.
The red channel exhibits some markings on the lighted side,don't
understand why imagers doesnot collect such.
May be a start to understand why the faint light on the dark side is not
also collected.
The presence of this strange light doesnot mean this is the AL commonly
researched,or a light attributed to AL.
Imagers are guessed to quote the light intensity levels collected,absence
of featuring as well,matter of contrast threeshold ability needs to be
quoted.
This quotation should stand in pure color channels,for direct sunlight,
polarised light,NIR light.
The lighting collected on dark side is possibly not an AL or the AL,but
the light exists.
What are the ccd images characteristics in fact regarding light kinds?
For the rest this light level is growing with the phase diminishing.

[Stanislas Maksymowicz  Ecquevilly,France]

Thomas and Florian Winterer(508mm Newtonian)
here three pictures of Venus from Meitingen Germany during verry good seeing 
conditions.
Telescope was a 20" Newton f/4 with Baader FFC, DMK 21AU618.
Filter: Astronomik IR742 and Astrodon UV
Each canal 800/2000 exposures used and stacked with AutostakkertII.





[Thomas and Florian Winterer : Meitingen Germany]

ALPO-Japan Latest Venus Section
2015/07/02
2015/06/30