The Sun in H-alpha ASI174MM camera

First light...

Focus is only possible with all the accessories because of the ingenious 2" neck of the ASI174MM and ASI120MM-S cameras !
Note : front Coronado SM90 not shown

FIRST LIGHT ! Screen capture during a few seconds of relative clearings ...
The general window aspect is about the same as with the Coronado PST and ASI120MM-S : 83% of the Winter Sun is visible.
Another good point : the focus is identical in between the 2 cameras ! Then if something happens locally you can quickly shutdown Firecapture, unplug and remove the ASI174MM and put the ASI120MM-S at the same place with the same cable :)

 

Later some time before sunset, the conditions cleared but were very hazy ... Time for real work despite bad seeing :)

Unprocessed Firecapture autosaved single JPG :

FireCapture v2.407 beta Settings
------------------------------------
Camera=ZWO ASI174MM
Filter=L
Profile=SUNHA
Filename=SUNHA_180215_171731.ser
Date=180215
Start=171731.237
Mid=171931.262
End=172131.288
Start(UT)=161731.237
Mid(UT)=161931.262
End(UT)=162131.288
Duration=240.051s
LT=UT+1h
Frames captured=7597
File type=SER
Binning=no
Bit depth=16bit
ROI=1600x1184
ROI(Offset)=0x0
FPS (avg.)=31
Shutter=15.00ms
Gain=187
SoftwareGain=10 (off)
Gamma=50
Brightness=1
AutoExposure=off
USBTraffic=62
HighSpeed=off
Histogramm(min)=9
Histogramm(max)=4010
Histogramm=97%
Noise(avg.deviation)=n/a
Limit=240 Seconds
Sensor temperature=23.9 °C

 

Full disk size 1:1 obtained with AS!2 in expand mode,
Processing Wx for disk, uncleaned.

Full disk size 1:1 obtained with AS!2 in expand mode,
Processing Wx for prominences, uncleaned.

Full disk size 1:1 obtained with RegiStax5 in expand mode,
Processing Wx for disk and prominences.

Color version ...