The observations were made with the telescope 0.9 m Dutch + CCD in April/May 1995 at La Silla, Chile (European Southern Observatory). We used the following systems or interference filters:
| System/ | ESO No. | Peak | Band- |
| filter | wavelength | width | |
| nm | nm | ||
| B | 419 | 438.4 | 101.9 |
| V | 420 | 529.3 | 116.9 |
| R | 421 | 599.4 | 163.8 |
 | 688 | 500.5 | 5.7 |
 *) | 387 | 654.6 | 8.1 |
*) + [NII] em.-lines at 6548 and very little at 6584 Å.
We made both long integrated frames in order to find faint outer envelopes (haloes), and short integrations with the aim of comparing FWHM in x and y directions of the object with those of surrounding stars in order to find small envelopes. The list of observed objects is given in Table 1 (click here). We observed 17 objects, mainly proto-PN and stellar PN (11 objects), but also some symbiotic stars, emission-line stars and old novae. The small planetary nebulae Hb 6 and IC 4997 were observed for comparison. The remark "paper" in this table means that a separate paper is being planned on the respective object.
For the programme objects we give in Table 2 (click here) the list of individual
frames (altogether 119) with the respective FWHM in both directions as
well as FWHM of stars in the vicinity (n is the number of stars used,
total n=737). The mean value of FWHM for stars is 
and
in the x and y direction, respectively. These values
represent mainly the seeing images together with the instrumental images
combined with the focus inaccuracy and the guiding error. The last error is
probably negligible because of nearly identical FWHM values in both
directions. The integration time was 0.3-720 s, but for longer than about
180 s the autoguider was used. The studied objects were sometimes
overexposed (10 frames) on the long integrated frames.
