In the two-dimensional CCD spectrograms, of H
taken in Jan'95, weak
nebular emission-lines were detected along the spatial direction of the CCD
image, which demonstrates that BN Ori is surrounded by a very faint emission
(reflection) nebula. This is another property which BN Ori shares with the
class of Herbig Ae/Be stars.
Since these weak lines extended over the entire CCD frame, the diameter of
this nebula must be larger than that covered by this frame (
10
).
In order to get more insight in the morphology of this nebula, CCD images of
BN Ori through 
and V, 
, and a narrowband
(FW = 13.5Å, centered at 6558.88Å) H
-filter (No. 674)
were obtained in Feb'95 (de Winter 1995) with the Dutch 90cm telescope at ESO.
However, we did not detect nebulosity around BN Ori on any of these images,
which may be caused by the fact that the bandwidth of the H
-filter
is still too large. In these cases the contribution from other surrounding
wavelengths may be too high to permit imaging of the nebulosity in H
.