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Ha w/ OSC
Hi guys,
My budget doesn't allow for two cameras, and desire for an affordable, cooled CCD w/APS-size detector led me to the M25C. Given my limited good weather, One-Shot is the only way to go.
As you can see, very good Ha is possible with a one-shot. Though only R pixels 'see', adequate signal for the detector which is quite sensitive in Ha is key.
An option is 2x2 binning and eliminating the Bayer so that all pixels are working together. The result is comparable with the 1x1 result, as the G and B data must be discarded there anyway.
Another option is shooting 1x1, but rather than color-convert, do a pseudo 2x2 bin and upsize. This keeps the better resolution and rounder stars, but also uses the G and pure noise B channel. Even so, if R signal is adequate, it rises above the noise very well.
Truly,
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