First H-alpha Solar Images - Full Disk Surface Image (JDJ)

First H-alpha Solar Images - Full Disk Surface Image

Acquisition type: Lucky imaging

First light with my new Lunt LS50Tha H-alpha solar telescope went as well as I could have hoped. I was able capture the Sun, focus, tune the etalon, and find a nice prominence. After some initial visual observation, I reconfigured and hooked up the ASI 290MM and was able to capture images of the surface and prominences. This is the surface image. I had to stich two images together to get the full disk using Microsoft ICE (for some reason I need to figure out, ICE worked its usual magic for the surface images but couldn't merge the prominence images).

Imaged with a Lunt LS50Tha, Baader UV-IR cut filter (not sure I needed that), and ZWO ASI290MM. Imaging train was configured to give me ~F/7. Image capture using Firecapture (see below for exposure settings). Stacking in AutoStakkert3 (best 25% of 500 frames). Processed in IMPPG (LR deconvolution, stretching) and Registax (wavelets).

FireCapture v2.5 Settings

------------------------------------

Observer=JDJ

Scope=Celestron Nextstar Evolution 8

Camera=ZWO ASI290MM

Filter=RGB

Profile=Sun

Filename=2020-05-15-2104_4-J-RGB.avi

Date=2020_05_15

Start=210426.441

Mid=210429.722

End=210433.004

Start(UT)=210426.441

Mid(UT)=210429.722

End(UT)=210433.004

Duration=6.563s

Date_format=yyyy_MM_dd

Time_format=HHmmss

LT=UT -5h

Frames captured=500

File type=AVI

Extended AVI mode=true

Compressed AVI=false

Binning=no

ROI=1936x1096

ROI(Offset)=0x0

FPS (avg.)=76

Shutter=0.200ms

Gain=200 (33%)

SoftwareGain=10 (off)

Gamma=50

AutoExposure=off

USBTraffic=100

HighSpeed=off

Brightness=1

AutoHisto=75 (off)

Histogramm(min)=0

Histogramm(max)=176

Histogramm=69%

Noise(avg.deviation)=n/a

Limit=500 Frames

Sensor temperature=44.2 °C

Focuser position=0

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