Current Info for Observer
as of 07/27/2024 6:48 a.m.
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General Info
| Type | Nebula |
| Constellation | Cygnus |
| Right ascension | 20h12'6.400'' |
| Declination | +38°21'18'' |
| Size | 20 arc min |
| Catalog Designations | NGC6888 |
| Discovered | 1792 William Herschel |
Generate a finder chart
The following form will generate a PDF finder chart suitable for printing using to locate objects in the sky with your telescope!
The Date is only really useful for solar system objects, as deep space objects move measurably only on a galactic timescale.
The larger the F.O.V (field of view), the more "zoomed out" the object will appear. It can be helpful to print several charts of the same object with different field of views.
Limiting the magnitude (remember, lower magnitude means brighter!) of stars and objects can make sure your chart is not cluttered with dim objects that you may not be visible to you anyway. The defaults are good, but try experimenting with raising and lowering the values.
sprudhom (271)
Seestar S50
1 points
Nom de l'objet NGC 6888, également connu sous le nom de la Nébuleuse du Croissant (C27)
Date 2024-05-23
Heure 01:28
Nom du lieu Laval, Québec, Canada
Durée (min.) 57
Longueur de la pause (s) 10
Coordonnés du lieu 45,56,-73,69
Magnitude qualité du ciel
Bortle Classe 9
Pourcentage lunaire 100
Nuages 10
Seeing 50
Transparence 30
Vent 7
Température 18
Température ressentit 18
Point de rosée 13
Humidité 72
Instrument Seestar S50
Filtre Double bande
Type d'objet Nébuleuse diffuse
Dimension Moyenne
Diamètre estimé Environ 20% du champ de vision du télescope Seestar S50
Bords de l'objet Flous
Forme de l'objet Bilobée
Couleur de l'objet
Densité Moyenne, avec des régions plus denses au centre
Nombre d'étoiles estimé Environ une dizaine d'étoiles visibles à travers la nébuleuse
Apparence Filamenteuse, avec des renforcements notables dans certaines portions
Éclat global Faible
Appréciation Bel objet. La nébuleuse du Croissant est intéressante à observer avec le Seestar S50. À refaire sous des cieux plus sombres pour une observation plus détaillée.
Name of the object: NGC 6888, also known as the Crescent Nebula (C27)
Date: 2024-05-23
Time: 01:28
Location name: Laval, Quebec, Canada
Duration (min.): 57
Exposure length (s): 10
Location coordinates: 45.56, -73.69
Sky quality magnitude: Bortle Class 9
Lunar percentage: 100%
Clouds: 10%
Seeing: 50
Transparency: 30
Wind: 7
Temperature: 18°C
Felt temperature: 18°C
Dew point: 13°C
Humidity: 72%
Instrument: Seestar S50
Filter: Dual band
Object type: Diffuse nebula
Size: Medium
Estimated diameter: About 20% of the field of view of the Seestar S50 telescope
Object edges: Fuzzy
Object shape: Bilobed
Object color: Medium density, with denser regions in the center
Estimated number of stars: About ten stars visible through the nebula
Appearance: Filamentous, with notable enhancements in certain portions
Overall brightness: Low
Appreciation: Beautiful object. The Crescent Nebula is interesting to observe with the Seestar S50. Worth revisiting under darker skies for a more detailed observation.
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