Venus in UV and IR

 Posted: Apr 26th, 2023
Technical Info
Telescope/Lens: Sky-Watcher BKP2001
Camera: ZWO ASI462MM
Mount: Sky-Watcher HEQ5 Pro
 Sankt-Peterburg, Russia
 Apr 25th, 2023
1373
Cloud cover of Venus in UV (365nm) and IR (>685nm)
Colors are artificial;

Date: 25.04.23
Time: UT +3; 17:17–17:23 (IR); 17:25–17:36 (UV)
Location: Saint Petersburg, 10th-floor balcony

Characteristics:
Apparent diameter: 16.35"
Magnitude: -4.11
Altitude of Venus above horizon: 33°
Azimuth: 262°
Illuminated: 68.6% of Venus' visible surface
Distance from Earth to Venus: 1.021 AU (152.711 million km)
Elongation: 41° 31' 15.3"

Equipment:
Telescope: SW 200/1000 & HEQ5 Pro
Camera: ZWO ASI462MM
Filters: ZWB2+BG39 (UV Filter), PlayerOne IR685 Pass
Atmospheric dispersion corrector: ZWO ADC
Barlow lens: Svbony 3x

Green channel (IR): Video: 6 minutes, 80,000 frames – stacked 3,000 frames
Ultraviolet (UV): Video: 11 minutes, 30,000 frames – stacked 15,000 frames

Software: FireCapture (Gain – IR: 0 (0%) / UV: 275 (45%); Exposure: IR – 5.000ms / UV – 20.00ms; FPS: IR – 200 / UV – 50; Histogram: IR – 60% / UV – 20%; Resolution: 600x600) / AutoStakkert3 / Registax6 / WinJupos / Photoshop CC 2019
Resize: 200%

RGB layout:
R: IR;
G: IR + UV;
B: UV;
Resolution: 654x654 px
Scale: 131 KB
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