Re: (IAAC) OBJECT: Barnard 33 (HORSEHEAD NEB.); INST: 16" Dobnewt f/4.59

>	Using the same filter in dark skies in NH, able to see the horsehead
>easily. (I have a 32 inch f4 Newtonian) rom Lynnfield Mass in my 16
>incher, even with the filter it is nearly an impossible object. The
>lesson is that you need dark skies even with these filters for viewing.
Very interesting!