Author Topic: Mars just past opposition  (Read 120 times)

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The Thing

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Mars just past opposition
« on: Oct 22, 2020, 10:10:29 »
Can't believe my old scope got this much detail. I have cleaned the optics, rotated the mirror on its mount as it had some markings I hadn't noticed before, collimated, reduced the focal ratio from f30ish to f18 as recommended by AstroSurfaces calculator. The results are worth it.


Image date, time and location    2020-10-21-2235 UTC,Manche, France
Telescope aperture and focal ratio LX90 8" UHTC 2xED Barlow ADC f18
Camera and filters used            ZWO ASI294MC Pro, no filters
Processing applied                    AstroSurface NOVA  2020-09-12       http://Astrosurface.com



Mars just past opposition
FireCapture v2.7 01 BETA Settings
------------------------------------
Observer=Duncan Evenden
Location=Manche, France
Scope=LX90 8" UHTC 2xED Barlow ADC
Camera=ZWO ASI294MC Pro
Filter=OSC
Profile=Mars
Diameter=21.57"
Magnitude=-2.45
CM=81.0° (during mid of capture)
FocalLength=3900mm (F/19)
Resolution=0.25"
Filename=2020-10-21-2235_7-DAE-OSC-Mars.ser
Date=211020
Start=223521.301
Mid=223542.005
End=223602.709
Start(UT)=223521.301
Mid(UT)=223542.005
End(UT)=223602.709
Duration=41.408s
Date_format=ddMMyy
Time_format=HHmmss
LT=UT +2h
Frames captured=5000
File type=SER
Binning=1x1
Bit depth=8bit
Debayer=yes
DebayerAlgorithm=HQLinear
BayerPattern=RG
ROI=200x200
ROI(Offset)=2008x1272
FPS (avg.)=120
Shutter=8.000ms
Gain=210 (36%)
AntiDew=on
AutoExposure=off
AutoGain=off
AutoHisto=75
Brightness=4
FPS=100 (off)
Fan=on
Gamma=50 (off)
HardwareBin=off
HighSpeed=off
SoftwareGain=10 (off)
TargetTemp=-5
USBTraffic=80
WBlue=99
WGreenOffset=0 (off)
WRed=45
Histogramm(min)=0
Histogramm(max)=0
Histogramm=0%
Noise(avg.deviation)=n/a
Limit=5000 Frames
Sensor temperature=-4.9°C
We're all guinea pigs in the laboratory of life. Better a fluffy guinea pig than a lab rat!
¯\_(ツ)_/¯ (Gallic shrug :))

Roberto

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Re: Mars just past opposition
« Reply #1 on: Oct 22, 2020, 11:51:49 »
Great result!  I like AstroSurface a lot.

We've had nothing but clouds and poor seeing here.  I was hoping tonight was going to be good but the forecast is deteriorating already...

Roberto

Mac

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Re: Mars just past opposition
« Reply #2 on: Oct 30, 2020, 09:47:35 »
very nice,

just itching to get all set up down here...

Mac.
Never, ever, argue with an idiot. They'll drag you down to their level and beat you with experience.
If you argue with an idiot, there are two idiots.

The Thing

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Re: Mars just past opposition
« Reply #3 on: Oct 30, 2020, 10:49:13 »
Thanks Roberto and Mac.

If anyone can explain the green patch without mentioning martians and canals... If I try to adjust it out all the other colour goes screwy. I don't know it's a low area. Maybe mist?
« Last Edit: Oct 30, 2020, 10:55:57 by The Thing »
We're all guinea pigs in the laboratory of life. Better a fluffy guinea pig than a lab rat!
¯\_(ツ)_/¯ (Gallic shrug :))

Roberto

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Re: Mars just past opposition
« Reply #4 on: Oct 30, 2020, 17:17:01 »
It's clouds.  Your colour balance maybe off. They appear white-blue on most images.  I have seen them through the eyepiece in my 10" Mak.   This apparition they are quite prominent and move a lot; particularly over the north pole. 

See this picture taken by a guy in Florida with a 16" newtonian and exceptional seeing.

Roberto