Six northern planetary nebulae were observed with a Tektronic CCD installed
at the f/6 focus of the 120-cm telescope of the Haute Provence Observatory:
it offers a total field of view of 
square arcsec
(
pixel-size or 0.77 arcsec 
). The southern
object, NGC 6302, was observed with the McLellan 1-m telescope (f/7.8) at
Mt John, New Zealand, using a Thomson TH7882 CDA-chip (
square pixels, 0.61 arcsec ) covering a total
field of view of 
square arcsec.
The interference filters used in our study have bandwidths 
, with typical transmission of about 60%. In some cases, however,
44 Å-wide 
, [OIII]5007 Å and 39 Å-wide [SII]6737 Å filters were
used. The filters were mounted in front of the detectors in the direct
imaging mode. The image quality was about 1
5 - 2'' during the
observations.
| Names | | [NII] | [OIII] | He/H | [NII]/ |  | Size('') | 12  m | 25 m | 60 m | 100 m |
| A 39 | - | - | - | 0.110 | - | 0.0 | 174 | 0.50 | 0.25 | 0.90 | 1.46 |
| Sh 1-89 | 639.00 | 823.00 | 433.00 | 0.193 | 1.288 | 0.86 | 35 | 0.89 | 0.25 | 2.14 | 20.15 |
| Sh 2-71 | 1088.00 | 3888.00 | 1423.00 | 0.110 | 3.574 | 1.45 | 100 | 1.41 | 2.26 | 4.50 | 102.18 |
| N650-1 | 649.00 | 490.00 | 1186.00 | 0.108 | 0.755 | 0.20 | 67 | 0.28 | 2.79 | 6.80 | 9.29 |
| N6302* | 704.00 | 1758.00 | 1354.00 | 0.182 | 2.497 | 1.26 | 44.5 | 32.08 | 335.90 | 849.70 | 537.40 |
| N6543(c) | 323.30** | 20.00 | 788.70 | 0.111 | 0.062 | 0.12 | 19.5 | 7.52 | 113.48 | 133.40 | 62.68 |
| N6543(h) | 323.40** | 304.80 | 1895.00 | - | 0.942 | - | 7.52 | 113.48 | 133.40 | 62.68 | |
| N6720 | 299.00 | 297.00 | 1064.00 | 0.113 | 0.993 | 0.29 | 76 | 0.82 | 10.15 | 52.27 | 54.62 |
) are from
Acker 1993's tables when available. (**) Data from Manchado &
Pottasch 1989; indices (c) and (h) being related to the centre and
the halo nebula respectively. 
are optical extinction
values at 
from CKS92 (their 
column) and IRAS
data from the IRAS catalogue. NGC 6302 was observed at the MJUO McLellan
1-m telescope.
| Names |  | F() | F([NII]) | F([OIII]) | d(pc) | Mi(*) |  () |
| A 39 | 175 | 5.15 | - | 19.94 | 1163 | 0.017 | 11.75 |
| Sh 1-89 |  400  110 | 8.81 | 8.62 | 2.76 | 1941 | 0.235 | |
| Sh 2-71(c) | 250 300 | 26.37 | 37.2 | 11.0 | 997 | 0.047 | 11.63 |
| N650-1 | 300 | 86.14 | 81.31 | 739 | 0.022 | 10.87 | |
| N6302* | > 250 | 210 | 525 | * | 10.55 | ||
| N6543(c) | 30 25 | 902.60 | 104.35 | 1952.70 | 982 | 9.63 | |
| N6543(h) | 340 | 24.0 | 5.3 | 41.1 | 982 | 0.079 | 11.15 |
| N6720 | 260 | 327 | 290 | - | 872 | 0.02 | 10.01 |
. (*) To evaluate PN ionized mass in 
, multiply
these figures by the corresponding values of filling factor 
and
electron density. Distances are in parsecs from CKS92. * See text.