- Bright Nebulas (Tri) -

Aur (7) Cep (11) Gem (1) Per (4) Tau (6)
Cam (2) CMa (1) Mon (3) Ser (1) Tri (4)
Cas (8) Cyg (11) Ori (14) Sgr (2) Vul (2)

NGC588 (BN)

../dss/dss2red_013245.20_+303854.00_5_web.jpg
Image source: DSS II (red) - 5×5'
Name: NGC588
Group: M33
Type: BN, EN, EG
Constellation: Tri
Coordinates: 01h32m45.20s / +30°38'54.00"
Brightness / Size: 13.5 mag / 0.7x0.7'
Emission nebula within the galaxy Messier 33.

8" f/6, 150x, Bortle 4
Quite compact, faint, barely permanently held with averted vision.
DIFFICULT

NGC592 (BN)

../dss/dss2red_013311.00_+303842.00_5_web.jpg
Image source: DSS II (red) - 5×5'
Name: NGC592
Group: M33
Type: BN, EN, EG
Constellation: Tri
Coordinates: 01h33m11.00s / +30°38'42.00"
Brightness / Size: 13.0 mag / 0.7x0.5'
Emission nebula within the galaxy Messier 33.

8" f/6, 150x, Bortle 4
Compact brightening, which I can see with averted vision for sure.
DIFFICULT

NGC595 (BN)

../dss/dss2red_013333.53_+304129.80_5_web.jpg
Image source: DSS II (red) - 5×5'
Name: NGC595
Group: M33
Type: BN, EN, EG
Constellation: Tri
Coordinates: 01h33m33.53s / +30°41'29.80"
Brightness / Size: 13.1 mag / 1.7x0.9'
Emission nebula within the galaxy Messier 33.

8" f/6, 150x, Bortle 4
Diffuse, slightly oval brightening. Quite well visible with averted vision.
MODERATE

NGC604 (BN)

../dss/dss2red_013433.56_+304703.50_5_web.jpg
Image source: DSS II (red) - 5×5'
Name: NGC604, H3.150
Group: M33
Type: BN, EN, EG
Constellation: Tri
Coordinates: 01h34m33.56s / +30°47'03.50"
Brightness / Size: b11.5 mag / 1.9x1.2'
Brightest emission nebula within the galaxy Messier 33.

152mm f/5.9, 72x, Bortle 4, SQM-L 21.2
At 34x rather faint, very compact. At 72x still small, round, slightly condensed, conspicuous with averted vision.

EASY
8" f/6, 100x, Bortle 4
Barely visible with direct vision, obvious with averted vision, relatively large, slightly oval, diffuse.
EASY