|
Stephen, set up your dob and view the moon during the day and you will see that it is not that bright. I do my lunar observing next to my house with the lights on so I don't get dark adapted, and I can observe without filters.
I have a range of good Baader ND filters I don't use, because side by side comparison showed noticeably more detail and contrast without the filters.
If you are set on using an ND filter in a dark location, you will need the 13% transmission filter for your dob.
|