- Bright Nebulae (CMa) -

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

NGC 2359 (BN)

../dss/dss2red_071830.00_-131342.00_20_web.jpg
Image source: DSS II (red) - 20×20'
Name: NGC2359, H5.21, Thor's Helmet, Duck Nebula
Type: BN, EN
Constellation: CMa
Coordinates: 07h18m30.00s / -13°13'42.00"
Brightness / Size: 11m4 / 10.0x5.0'
Wolf-Rayet ring nebula.

Robert Zebahl
4.5" f/8, 28x + [OIII], NELM 5m0+
Conditions in the target region: NELM 4m0, SQM-L 18.7
Observation at moon (60% illuminated): Fairly well visible with averted vision, elongated, evenly bright. Brighter than expected. Also perceptible with UHC filter, but appeared obviously fainter.

MODERATE
8" f/6, 37x + [OIII], Bortle 4+, NELM 6m0+, SQM-L 21.1
Conditions in the target region: NELM 5m0+, SQM-L 20.2
Without filter elongated, fairly faint. With UHC or [OIII] filter visible with direct vision, evident with averted vision, elongated (N-S). At the southern edge a bright extension towards SW. Otherwise evenly bright. [HBeta] without any effect.

EASY
René Merting
8" f/4, 40x + [OIII], SQM-L 21.5
Bedingungen in der Zielregion: SQM-L 20.5
bei 40x ist eine leichte schwache Aufhellung sichtbar - mit [OIII] wirkt der Nebel flächiger und zum Zentrum hin heller werdend - die Ansätze der Flanken sind zu erkennen - der Nebel wirkt insgesamt wie eine Sichel mit kugelrundem Bauch - die nördliche Flanke ist etwas breiter
EASY