Quote:
Originally Posted by kimrichards
Thanks to everyone for all the input.
I am leaning towards the ASI290MM for the following reasons.
- I am not worried about the extra processing time.
- Generally accepted that mono is better.
- I can add a fourth filter.
- Fastest frame rate
- Binning 2x would keep me just below 1/2 the Dawes limit
I am still a bit concerned about the "now needed" de-rotation being detrimental but presume that has been accounted for in "Generally accepted that mono is better."
Thanks again
Kim
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Hi Kim,
No need to Bin or worry about the Dawes limit with planetary.
Below are my settings when I imaged Mercury last week. As you can see I am imaging at double the dawes limit for a 12" scope. Results attached.
FireCapture v2.6 Settings
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Camera=ZWO ASI290MM
Filter=IR685
Profile=Mercury
Resolution=0.25"
Filename=2020-03-15-2006_2-IR685-Mercury.ser
Date=150320
Start=200519.690
Mid=200616.492
End=200713.295
Start(UT)=200519.690
Mid(UT)=200616.492
End(UT)=200713.295
Duration=113.605s
Date_format=ddMMyy
Time_format=HHmmss
LT=UT +10h
Frames captured=16427
File type=SER
Binning=no
ROI=584x534
ROI(Offset)=624x328
FPS (avg.)=144
Shutter=6.916ms
Gain=359 (59%)
AutoGain=off
Brightness=1
AutoHisto=75 (off)
HighSpeed=on
USBTraffic=85
SoftwareGain=10 (off)
Gamma=0 (off)
AutoExposure=off
FPS=100 (off)
Histogramm(min)=1
Histogramm(max)=248
Histogramm=97%
Noise(avg.deviation)=5.90
Limit=none
Sensor temperature=18.7°C