Venus in UV and IR

Apr 10th, 2023

Venus in UV (365nm) and IR (>685nm) Colors are representative. Date: 09.04.23 Time: UT +3; 17:00-17:08 (IR); 17:20-17:47 (UV) Location: Saint Petersburg, 10th-floor balcony Characteristics: Apparent diameter: 14.71" Magnitude: -4.06 Altitude of Venus above horizon: 29-23° Azimuth: 261-271° Illuminated: 74.5% of Venus's visible surface Distance from Earth to Venus: 1.134 AU (107.495 million km) Elongation: 38° 41' 59.2" Equipment: Telescope: SW 150/750 & HEQ5 Pro Camera: ZWO ASI462MM Filters: ZWB2+BG39 (UV Filter), PlayerOne IR685 Pass Atmospheric Dispersion Corrector: ZWO ADC Barlow lens: Svbony 3x + 3 spacers Green channel (IR): Video: 8 minutes, 100,000 frames - stacked 1,500 frames Ultraviolet (UV): Video 2 x 17 minutes, 40,000 frames - stacked 15,000 frames Software: FireCapture (Gain - IR-50 (8%) / UV - 300 (50%), Exposure: IR - 5.000ms / UV - 25.00ms, FPS: IR - 199 / UV - 40, Histogram: IR - 40% / UV - 18%, Resolution: 600x600) / AutoStakkert3 / Registax6 / WinJupos / Photoshop CC 2019 Resize: 150% RGB composition: R: IR; G: IR + UV; B: UV;

Apr 9th, 2023

Venus in UV (365nm) and IR (>685nm) Colors are representative. Capture Date: 09.04.23 Time: UT +3; 17:00–17:08 (IR); 17:20–17:47 (UV) Location: Saint Petersburg, 10th-floor balcony Characteristics: Apparent diameter: 14.71" Magnitude: –4.06 Altitude of Venus above horizon: 29–23° Azimuth: 261–271° Illuminated: 74.5% of Venus’ visible surface Distance from Earth to Venus: 1.134 AU (107.495 million km) Elongation: 38° 41' 59.2" Equipment: Telescope: SW 150/750 & HEQ5 Pro Camera: ZWO ASI462MM Filters: ZWB2+BG39 (UV Filter), PlayerOne IR685 Pass Atmospheric dispersion corrector: ZWO ADC Barlow lens: Svbony 3x + 3 spacers Green channel (IR): Video: 8 minutes, 100,000 frames – stacked 1,500 frames Ultraviolet (UV): Video 2 × 17 minutes, 40,000 frames – stacked 15,000 frames Software: FireCapture (Gain – IR: 50 (8%) / UV: 300 (50%); Exposure: IR – 5.000 ms / UV – 25.00 ms; FPS: IR – 199 / UV – 40; Histogram: IR – 40% / UV – 18%; Resolution: 600×600) / AutoStakkert 3 / Registax 6 / WinJupos / Photoshop CC 2019 Resize: 150% RGB layout: R: IR; G: IR + UV; B: UV;