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Trevor,
Ive been using DSS for 6 years now and does a great job
A lot of folk have issues with stacking OSC narrowband subs using DSS due to not enough stars being detected by the stacker
Give my procedure below a try, hopefully it resolves your issue
“Star Detection Threshold and Registration
Setting up the registration process for your data requires DSS to detect enough stars for alignment and stacking. Sometimes DSS does not compute enough detected stars ( even after setting the threshold to the lowest setting of 2% ) for the following reasons -
Using Narrowband Filters
Poor focus
Bad Tracking or guiding
Atmospheric Conditions ( Seeing )
DSS requires and uses at least 8 or more good stars out of a larger quantity of detected Stars to register, align and Stack your frames
If your Star detection count is extremely low, you can increase the number of detected stars by carrying out the following -
Go to Options > Settings > Raw Fits Digital Development Process Settings
Raw or Fits tab
Colour Adjustment > Brightness
Increase Brightness only from 1.0000 to 2.0000
Press Apply then Ok
Check Star Detection threshold again and hopefully Star count will be increased.
Increase Brightness again if Star count is still low
Star counts from 50 to 150 are usually enough for DSS to find at least 8 or more good Stars”.
Good Luck
Martin
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