Difference between filter

kaelig

Good evening,

I use my ZWO setup with LRGB & SHO filters. In NINA, you could register the shifting of the EAF between the different filters. Like this, when you change filter, the EAF motor shift with the shift table value and the focus is OK.

It is could be interesting to have an automatic procedure to make the focus on the same target with the different filters (but not the same time) in order to register precisely the focus difference. Like this, when we make a filter change, the focus could be done automatically. It could be very useful in live stacking.

When we make the plan, it could be interesting too. With this shifting, we could avoid the autofocus step or start the autofocus in a better position after a filter change.

Thank you for your help,

Kaelig

Tech@ZWO

kaelig Thank you for your suggestions, we received some similar demands, will consider this in the future.

kaelig

Hello, do you have implement this feature, it is very important for lot of people. due to the shifting between the filter, I need to use a higher focus step in order to be sure to cover the focus of all filters automatically during the plan. But due to this higher step, I have not the optimized focus point that impacts the final FWHM of my image. Please could you integrate this simple feature in your next update. thank you

Tech@ZWO

kaelig Do not have this plan in recent version yet.

w7ay

kaelig Please could you integrate this simple feature in your next update.

Be aware that the location where many people (who use non-Petzval scopes) install their filter drawer/filter wheel, changing filter glass thickness requires a change in backfocus, and not focus.

Not a big deal changing from 1.85mm thick glass to 2mm thick glass, but accounts for 0.6mm worth of backfocus change going between a filter like the Astronomik L1 (1.2mm thick glass) to a Chroma filter (3mm thick glass).

Chen