Quote:
Originally Posted by Shiraz
thanks for the link Chris. Do you use the calculator for narrowband and if so, what sub exposure lengths does it suggest?
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Suggested exposure lengths have been 20.7 minutes for Ha 5nm with the FSQ at f/5. While this has been fine for most of my targets, there would likely be issues with brighter targets, given limited well depth. Calculators can be used as a suggested guide for sub length; while respecting the rate of saturation for brighter objects. Like everything in this hobby, its about finding a balance.... only to find that there is some other variable you need to account for. You're dealing with different issues for narrowband.