The Sun in Ha. 50mm Lunt with double stack (LS50FHa), B600 blocking filter and ASI 174MM camera. Struggling with even illumination despite having tried tilt adapters etc. Not well oriented image but north towards the top and east towards the left. About 10,000 frames captures in FireCapture and best 5% of these stacked in AS!4 and sharpened in WaveSharp, and curves adjusted in FastStone Image Viewer. 

FireCapture v2.7.15 Settings

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Observer=Unknown

Location=Unknown_City

Scope=Unknown_Scope

Camera=ZWO ASI174MM

Filter=G

Profile=Sun_Halpha

Filename=2025-05-10-1636_6-U-G-Sun_Halpha.ser

Date=100525

Date(UT)=100525

Start=173602.311

Mid=173636.377

End=173710.444

Start(UT)=163602.311

Mid(UT)=163636.377

End(UT)=163710.444

Duration=68.133s

Date_format=ddMMyy

Time_format=HHmmss

LT=UT +1h

Frames captured=10106

FPS (avg.)=148

File type=SER

Binning=1x1

Bit depth=12bit

Data=Mono

ROI=936x834

ROI(Offset)=360x152

Shutter=2.952ms

Gain=118 (29%)

AutoExp=off

AutoGain=off

Brightness=1

Gamma=20

HighSpeed=off

USBTraffic=80

Histogramm(min)=0

Histogramm(max)=3649

Histogramm=89%

Noise(avg.deviation)=n/a

eADU=1.878

AutoAlign=false

PreFilter=none

Limit=none

Sensor temperature=37.3°C