Venus on 2020-04-15 (JDJ)

Venus on 2020-04-15

Acquisition type: Lucky imaging

Continuing my imaging of Venus during the 2019-2020 evening apparition. These images were captured on the night of April 15, 2020. Venus was ~37% illuminated in this image. The seeing was below average (2/5) this night which is pretty typical for the past week or so. Really enjoying watching the crescent thin, and hoping to follow into early May.

Imaged with a C8 Evo, ZWO ADC, Baader UV-IR Cut filters, and ZWO ASI224MC. Imaging train was configured to give me ~F/20. Image capture using Firecapture (see below for exposure settings). Stacking in AutoStakkert3 (best 10% of ~43000 frames captured over 180 seconds). Color balancing and Wavelet sharpening in Registax6. Derotated and combined three images in WinJUPOS.

Exposure settings for UV-IR Cut Filter images: Shutter=0.25ms, Gain=250 (33%), Histogram=49%, 240 FPS

FireCapture v2.5 Settings

------------------------------------

Observer=JDJ

Scope=Celestron Nextstar Evolution 8

Camera=ZWO ASI224MC

Filter=RGB

Profile=Venus

Diameter=30.98"

Magnitude=-4.48

FocalLength=4000mm (F/20)

Resolution=0.19"

Filename=2020-04-15-2333_7-J-RGB.avi

Date=2020_04_15

Start=233215.917

Mid=233345.922

End=233515.927

Start(UT)=233215.917

Mid(UT)=233345.922

End(UT)=233515.927

Duration=180.010s

Date_format=yyyy_MM_dd

Time_format=HHmmss

LT=UT -5h

Frames captured=43007

File type=AVI

Extended AVI mode=true

Compressed AVI=false

Binning=no

ROI=300x300

ROI(Offset)=0x0

FPS (avg.)=238

Shutter=0.250ms

Gain=250 (41%)

HighSpeed=on

AutoHisto=75 (off)

USBTraffic=100

WRed=52

HardwareBin=off

Gamma=50

Brightness=1

WBlue=95

AutoExposure=off

SoftwareGain=10 (off)

Histogramm(min)=0

Histogramm(max)=126

Histogramm=49%

Noise(avg.deviation)=n/a

Limit=180 Seconds

Sensor temperature=17.9 °C

Focuser position=30027

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