Interesting object, especially for smaller aperture. I noted through several small apertures:

Naked eye, NELM 7m0+
difficult and only visible with Hß filter; faint 1:2 elongated streak

8x30 binocular, NELM 6m5+
with Hß filter bright elongated glow, steadily visible

10x50 binocular, NELM 7m0+
even and steadily visible without a filter as a faint, 1:2 elongated glow; with Hß filter bright and slightly bend

2.8" Newton, 13x, NELM 7m0+
with Hß filter easy to see as an elongated glow

4" Newton, 13x, NELM 6m0+
visible even under average countryside sky; with Hß both edges and middle hole visible

4" Newton, NELM 6m5+
under good transparency of a countryside sky easy visible; with 13x (5.1°) + Hß nice framed and with 18x (3.5°) full format filling

4" refractor, 16x, NELM 7m0+
faint, structureless and elongated streak without filter; with Hß filter bright glow which is divided and shows some dark structures within the nebula

4" binocular telescope, 14x, NELM 6m5+
beside the main bright body (~2°) object shows faint extensions to the SE and NW with a stretch of around 5°

5" binocular telescope, 20x, NELM 7m0+
with an broadband nebula filter visible as a divided glow with a dark structure in its middle

NGC1499.jpg
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