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Jupiter with ASI462MC in Visible and Methane

Astrophotography
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#1 banjo1000

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Posted 25 September 2021 - 03:03 AM

2021-09-23-0411_8-JMI_derot-L-0432_8-JMI_derot-CH4-Jup_ZWO ASI462MC_Annotated_10x8.jpg
These photos are an exploration of the ASI462MC as a monochrome(!) near infrared camera, and as an alternative to my ASI290MM. Ordinarily, I shoot Jupiter in CH4 with 2x2 binning at 20ms with my ASI290MM. Here, I used the same 20ms with an ASI462MC *without* binning. Seeing was average or slightly below. The RGB bayer filters are mostly transparent in the near infrared, but the operative word is mostly. I used the neutral-colored Moon to calibrate each of my infrared filters including my CH4 narrowband filter.  I adjust the wRed and wBlue sliders such that the R, G, and B histograms have the same gain whileviewing the moon, and then use those same color balance settings when shooting Jupiter in Methane. 

 

The color picture is decent, but the CH4 shows more cloud detail than anything I've recorded with an ASI290MM and 2x2 binning.

C14 + ES 2"2x focal extender, ZWO ADC and filters
FC Settings: L (visible) 6ms, Gain=329, CH4 20ms, Gain-500
 


Edited by banjo1000, 25 September 2021 - 03:03 AM.

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#2 deepwoods1

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Posted 25 September 2021 - 05:10 AM

Very cool the compositional differences shown!


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#3 Aviates

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Posted 25 September 2021 - 07:13 AM

Excellent description of your work - very much appreciate the detail as I’m starting the planetary imaging journey…


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#4 Ittaku

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Posted 25 September 2021 - 04:47 PM

Odd, I don't need to move Wred or Wblue from neutral (50) when doing CH4 with my ASI462MC. Stochastic movement of the gains over time makes them look different but overall the sensitivity is the same on the graph at 890nm so they average out.


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