Barnard 33, IC 434, NGC 2024,NGC 2023

(ra: 05:41.6 / dec -02:14)

DATA

TYPE Dark & Emission and Reflection Nebula Complex 

MAGNITUDE: n/a  (m_v)
SIZE: Picture FOV 108 x 84 arc minutes

DISTANCE: 1000 / 2000 light years

OBJECT DESCRIPTION

This is one of the classic pictures amateurs astrophotographers use to take. It requires a relative short focal length or big chips to cover the area. A good target for modified DSRL's too. In this case we capture the image using a 752 x 580 CCD chip. Therefore 200 mm were required to cover the area. Moon was crossed its half phase and it was locates 70 degrees from the target, it was a windy session so the results were not the ones I was expecting. The L channel suffered form the astronomik CLS filter aberration due the short focal ratio used

A lot is going on the image (see map with the objects location). Barnard 33 is a dark globule of gas and non luminous gas interposing the light of emission nebula behind  IC 434 at the south of Zeta Orionis (Alnitak) 1.71 magnitude star. Below right in the picture is NGC 2023 which lies in front of the B33. Not much detail collected for this object. NGC 2024 is also known as the Flame Nebula a bright emission Nebula of 30 arcs minutes of visual diameter. Al this nebulas are part of the Orion cloud.

IMAGE INFORMATION

LENS: Jupiter 50 / 200 mm f4 (stoped at 5.6)

MOUNT: Vixen GPDX with Sky Sensor 2000

GUIDING: Orion ED 80 SXV Guide Camera

IMAGE ACQUISITION: Astro Art 3.0

SKY CONDITIONS: Visual limit magnitude 4 / Moon 70 degrees away

CAMERA: Starlight Xpress SXV7 at @ f5.6

FILTERS: Astronomik Type II, Astronomik CLS

EXPOSURES: HaLRGB (20,10,10,10,10)

PROCESSED: Darks, bias in Images Plus, NASA fits Liberator Photoshop CS

The region labeled in Ha