Rare Events UTC
The first night I could capture Jupiter and Saturn in the same field of view using a dedicated planetary camera. All four of Jupiter's largest moons happen to be ordered by their distance from the planet. From right to left: Io, Europa, Ganymede, and Callisto.
This image shows a great example of the inverse-square law in play. While taking this photo, Jupiter was 5.1 AU from the Sun while Saturn was 10 AU. Saturn receives a quarter of the solar energy that Jupiter does, making it appear much dimmer than its inner neighbor. Our eyes can handle the difference well when looking at them through an eyepiece of a telescope, but the difference is more stark with a camera.
While the two gas giants are close together in the sky, they are physically far apart, only appearing next to each other because they and Earth are aligned in a nearly straight line. When taking this photo, Jupiter was 884 million kilometers away while Saturn was 1.8x farther at 1618 million kilometers.
ZWO ASI174MM
Celestron EdgeHD 8
FireCapture v2.7 02 BETA Settings ------------------------------------ Observer=Ethan Chappel Location=Cibolo Scope=Celestron C8 EdgeHD Camera=ZWO ASI174MM Filter=B Profile=Jupiter Diameter=33.30" Magnitude=-1.97 CMI=311.4° CMII=173.5° CMIII=292.3° (during mid of capture) FocalLength=1450mm (F/4) Resolution=0.83" Filename=j2020-12-19_23-56-51_b_ec.ser Date=2020_12_19 Start=23_56_06.920 Mid=23_56_51.918 End=23_57_36.916 Start(UT)=23_56_06.920 Mid(UT)=23_56_51.918 End(UT)=23_57_36.916 Duration=89.996s Date_format=yyyy_MM_dd Time_format=HH_mm_ss LT=UT Frames captured=7472 File type=SER Binning=1x1 ROI=1936x1216 ROI(Offset)=0x0 FPS (avg.)=83 Shutter=12.00ms Gain=230 (57%) AutoExposure=off AutoGain=off AutoHisto=75 (off) Brightness=1 FPS=100 (off) Gamma=50 HighSpeed=on SoftwareGain=10 (off) USBTraffic=80 Histogramm(min)=0 Histogramm(max)=189 Histogramm=74% Noise(avg.deviation)=1.53 Limit=90 Seconds Sensor temperature=86.4°F Dark=ZWOASI174MM_1936x1216__8bit_Exp=30.00ms_T=30°C_Frames=30_2020-19-12_054553.dark FireCapture v2.7 02 BETA Settings ------------------------------------ Observer=Ethan Chappel Location=Cibolo Scope=Celestron C8 EdgeHD Camera=ZWO ASI174MM Filter=G Profile=Jupiter Diameter=33.30" Magnitude=-1.97 CMI=309.4° CMII=171.5° CMIII=290.3° (during mid of capture) FocalLength=1850mm (F/5) Resolution=0.65" Filename=j2020-12-19_23-53-36_g_ec.ser Date=2020_12_19 Start=23_52_51.766 Mid=23_53_36.770 End=23_54_21.774 Start(UT)=23_52_51.766 Mid(UT)=23_53_36.770 End(UT)=23_54_21.774 Duration=90.008s Date_format=yyyy_MM_dd Time_format=HH_mm_ss LT=UT Frames captured=8939 File type=SER Binning=1x1 ROI=1936x1216 ROI(Offset)=0x0 FPS (avg.)=99 Shutter=10.00ms Gain=180 (45%) AutoExposure=off AutoGain=off AutoHisto=75 (off) Brightness=1 FPS=100 (off) Gamma=50 HighSpeed=on SoftwareGain=10 (off) USBTraffic=80 Histogramm(min)=0 Histogramm(max)=185 Histogramm=72% Noise(avg.deviation)=1.23 Limit=90 Seconds Sensor temperature=86.4°F Dark=ZWOASI174MM_1936x1216__8bit_Exp=30.00ms_T=30°C_Frames=30_2020-19-12_054553.dark FireCapture v2.7 02 BETA Settings ------------------------------------ Observer=Ethan Chappel Location=Cibolo Scope=Celestron C8 EdgeHD Camera=ZWO ASI174MM Filter=R Profile=Jupiter Diameter=33.30" Magnitude=-1.97 CMI=307.3° CMII=169.5° CMIII=288.3° (during mid of capture) FocalLength=1500mm (F/4) Resolution=0.81" Filename=j2020-12-19_23-50-11_r_ec.ser Date=2020_12_19 Start=23_49_26.461 Mid=23_50_11.463 End=23_50_56.466 Start(UT)=23_49_26.461 Mid(UT)=23_50_11.463 End(UT)=23_50_56.466 Duration=90.005s Date_format=yyyy_MM_dd Time_format=HH_mm_ss LT=UT Frames captured=7472 File type=SER Binning=1x1 ROI=1936x1216 ROI(Offset)=0x0 FPS (avg.)=83 Shutter=12.00ms Gain=200 (50%) AutoExposure=off AutoGain=off AutoHisto=75 (off) Brightness=1 FPS=100 (off) Gamma=50 HighSpeed=on SoftwareGain=10 (off) USBTraffic=80 Histogramm(min)=13 Histogramm(max)=194 Histogramm=76% Noise(avg.deviation)=1.96 Limit=90 Seconds Sensor temperature=86.4°F Dark=ZWOASI174MM_1936x1216__8bit_Exp=30.00ms_T=30°C_Frames=30_2020-19-12_054553.dark