Sh2-155 Cave Nebula Wide Field

Μιας και αυτές τις μέρες επιστρέφω στο Λονδίνο, σκέφτηκα να σας αφήσω με ένα αποχαιρετιστήριο δωράκι! Οι φετινές αστροβραδιές ήταν σίγουρα στα highlights του καλοκαιριού μου και θα μου λείψουν πολύ! Άντε και του χρόνου παιδιά Keep shooting!!

SH2-155 Cave Nebula Wide Field

Object:SH2-155 The Cave Nebula in Cepheus

Type: Emission/Reflection/Dark nebula

Constellation:Cepheus

Distance: ~2400 Light Years

Tech Specs:

Location: Mount Parnonas - Greece

Date: 6-7 August 2013

Scope: Officina Stellare Hyper APO 80 @ f4.8

FF/FR: Televue 0.8x Photo Reducer/Flattener

Camera: QHY9 KAF8300 Mono

Chip Temperature: -20 C

Filters: Astronomik L-R-G-B

Mount: Skywatcher NEQ6 PRO + EQMOD

Guiding: QHY5 + Baader UV/IR Cut + PHD

Capture: Nebulocity 3

Processing: Deep Sky Stacker, PixInsight, Photoshop

Light Frames:

L: 22x600sec Bin1x1

RGB: 6x600sec Bin1x1

Total: 6.5 hours

Calibration Frames:

20x[Darks,Flats,Dark Flats,Bias] per channel

Description:

The Cave Nebula, Sh2-155 (or Caldwell 9), is a dim and very diffuse bright nebula within a larger nebula complex containing emission, reflection, and dark nebulosity. It is located in the constellation Cepheus.Visually it is a difficult object, but with adequate exposure, makes a striking image. The nebula gets its name from the dark lane at the eastern side abutting the brightest curve of emission nebulosity which gives the appearance of a deep cave when seen through a telescope visually.