4th July prom's

[banjo]

Hello everyone, a beautiful protuberance in evolution.
Click on images
Paul

[cshahar]

Nice capture of some very delicate details!

-Charles

[eroel]

Paul:
Beautiful renditions.
Best wishes,
Eric.

[ffellah]

Very nice, Paul !

Franco

[marktownley]

They look good! Very nice!

[gabrieli]

Hi, Paul

The way the detail in these proms is so well defined is impressive. I know from experience that when I try to brighten faint proms like these, I usually do it by boosting gamma or gain. For me, this smears the spicule layer. Yet, in your images, spicule detail is maintained. Do you boost gamma or gain to accomplish this in the recorded image or do you bring out spicule detail in processing?

Lou

[banjo]

Hello and thank you all for your nice messages,
I'm putting you the FC files.
I think it is also the transparency of the sky and the seeing that makes the details appear.
Another thing to take into account is to make the videos as short as possible to avoid the blur, see the animation of 3 consecutive photos on 1mn of intervale (AS2! 11i / 1000 to 110i / s), one can See that some phenomena are hyper-fast and if the video is too long the details will be blurred.
Excuse me for my very bad English.
Paul

for #1 and #2

FireCapture v2.4 Settings
------------------------------------
Camera=ZWO ASI174MM
Profile=soleil
Filename=Gain=170_Exposure=8.7ms_Gamma=42_090920.ser
Date=040717
Start=090920.431
Mid=090934.190
End=090947.950
Start(UT)=070920.431
Mid(UT)=070934.190
End(UT)=070947.950
Duration=27.519s
Date_format=ddMMyy
Time_format=HHmmss
LT=UT +1h
Frames captured=2469
File type=SER
ROI=1568x608
ROI(Offset)=188x358
FPS (avg.)=89
Shutter=8.723ms
Gain=170
Gamma=42
USBTraffic=70
Brightness=121
HighSpeed=on
AutoExposure=off
SoftwareGain=22 (off)
Noise(avg.deviation)=n/a
Sensor temperature=41,1 °C

for the #3 and #4
FireCapture v2.4 Settings
------------------------------------
Camera=ZWO ASI174MM
Profile=soleil
Filename=Gain=148_Exposure=8.8ms_Gamma=45_112232.ser
Date=040717
Start=112232.846
Mid=112242.923
End=112253.001
Start(UT)=092232.846
Mid(UT)=092242.923
End(UT)=092253.001
Duration=20.155s
Date_format=ddMMyy
Time_format=HHmmss
LT=UT +1h
Frames captured=2286
File type=SER
ROI=1152x456
ROI(Offset)=396x456
FPS (avg.)=113
Shutter=8.787ms
Gain=148
SoftwareGain=22 (off)
Brightness=121
AutoExposure=off
USBTraffic=70
Gamma=45
HighSpeed=on
Noise(avg.deviation)=n/a
Sensor temperature=44,4 °C

[Montana]

Absolutely stunning work I find faint proms are so hard to take quickly as the exposure time gets too long
Alexandra