Double stacked (60mm Lunt with 50mm second etalong on the front). 60 seconds at about 50fps captured in Firecapture. Best 50% frames stacked in AS!4, wavelets in Registax, levels and curves adjusted in FastStone Image Viewer. Seeing was poorer than OK, but not horrendous. High haze [as always] and intermittant large fair weather clouds hindering play. See forum thread on second etalons: https://britastro.org/forums/topic/second-etalon

FireCapture v2.7.15 Settings

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Observer=Unknown

Location=Unknown_City

Scope=Unknown_Scope

Camera=ZWO ASI585MC

Filter=G

Profile=Sun_Halpha

Filename=2025-09-28-1345_6-U-G-Sun_Halpha.ser

Date=280925

Date(UT)=280925

Start=144509.765

Mid=144539.767

End=144609.770

Start(UT)=134509.765

Mid(UT)=134539.767

End(UT)=134609.770

Duration=60.005s

Date_format=ddMMyy

Time_format=HHmmss

LT=UT +1h

Frames captured=3268

FPS (avg.)=54

File type=SER

Binning=2x2

Bit depth=12bit

Data=Mono

Debayer(Preview)=yes

Debayer(Data)=no (Mono)

Debayer(Algorithm)=NearestNeighborFast

Debayer(Pattern)=RG

ROI=864x894

ROI(Offset)=96x152

Shutter=18.30ms

Gain=235 (39%)

AutoExp=off

AutoGain=off

Brightness=1

HardwBin=off

HighSpeed=off

USBTraffic=100

WBlue=75

WRed=55

Histogramm(min)=9

Histogramm(max)=1719

Histogramm=41%

Noise(avg.deviation)=n/a

eADU=0.256

AutoAlign=false

PreFilter=none

Limit=60 Seconds

Sensor temperature=34.3°C