LP Filter And Photography

[Andre27 (Andre)]

Good day to all

I have bought a Baader Neodymium Filter LP, I have been informed that my exposure time for astro photography has to be adjusted to accommodate the light loss.

Does anybody know of a formula that is used for this purpose, or has anyone experience with this question?

I have sorted my drift alignment, thank you for all the help, I now get +- 8 min tracking with very little drift on my eq5 mount and do 60 to 90 sec exposures without egg shape stars.

Thank you for your time and help

Andre

[blink138 (Pat)]

just start doubling your exposure time and check your histogram andre, that would be a good start
pat