| ACQUISITION | PARAMETRES ACQUISITION | |||||
| Objet | Filtres | Bin | Temps Pose | Nombres Poses | Temps Total | |
| Nom | Sh2-155 | Luminance G75O15 | 1 x 1 | 120” | 65 | 2H16 |
| Constellation | Céphée | Rouge G75O15 | 1 x 1 | 120” | 56 | 1H86 |
| Distance | 2400 al | Vert G75O15 | 1 x 1 | 120” | 72 | 2H40 |
| Détail prise de vue | Bleu G75O15 | 1 x 1 | 120” | 69 | 2H30 | |
| Lieu | Ameiria Portugal | S2 G139 O30 | 1 x 1 | 180” | 222 | 11.1H |
| Date acquisition | 19/08 au 01/10/21 | Hα G139 O30 | 1 x 1 | 180” | 224 | 11.20H |
| Setup | O3 G139 O30 | 1 x 1 | 180” | 155 | 7.75H | |
| Instrument | FSQ 106 | Totaux | 863 | 38.77H | ||
| Diamètre | 106 mm | Bias | 1X1 | 99 | ||
| Focale | 530 mm | Dark | 1X1 | 51 | ||
| Rapport F/D | 5 | Flat | 1X1 | 11 | ||
| Monture | EQ6 Pro Skywatcher | Acquisition faite par | Team ARO | |||
| Caméra acquisition | ZWO Asi 1600 MM | Traitement fait par | Team ARO | |||
| Caméra de guidage | Lodestar X2 | Logiciels utilisés | ||||
| Montage de guidage | DO Starlight X press | Acquisition | TheSkyX , Focusmax, Maxpilote | |||
| Echantillonage | 1,48 arcs | Traitement | Pixinsight, Photoshop | |||
COMMENTS ON THE OBJECT:
Sh2-155 (also referred to as Caldwell 9, Sharpless 155 or S155 ) is a diffuse nebula in the constellation Cepheus , within a larger nebula complex containing emission, reflection and dark nebulosity. It is widely known as the Cave Nebula . Sh2-155 is an ionised H II region with ongoing star formation activity, at an estimated distance of 2400 light years from Earth.
Sh2-155 was noted as a galactic emission nebula in 1959 in the second extended edition of the Sharpless catalogue. Although Sh2-155 is relatively faint for amateur observation, some of its structure can be seen visually through a medium-sized telescope under dark skies.
ASCENSION DROITE:22h57’17,14s
DÉCLINAISON:+62°28’33,4