Observation by Martin Butcher: B33 - The Horsehead Nebula

Uploaded by

Stuart Morris

Observer

Martin Butcher

Observed

2010 Dec 13 - 00:40

Uploaded

2021 Apr 05 - 16:17

Objects

The Horsehead Nebula (Barnard 33)

Planetarium overlay

Enable overlay
Show stars
Label stars
Show deep sky objects
Label deep sky objects
Show constellation boundaries
Show constellation sticks
Show constellation labels
Show RA/Dec grid

Constellation

Orion

Field centre

RA: 05^h41^m
Dec: -02°14'
Position angle: -91°26'

Field size

2°34' × 1°43'

Equipment

Meade LX-90 8" telescope fitted to its field tripod by an equatorial wedge.
LX-90 Periodic Error Correction enabled.
Dew Removal straps fitted to telescope and camera lens
Telescope and camera powered by Mains Power.
Stock Canon 40D with 200mm f/2.8 lens stopped down to f/4
Telescope driven but unguided

Exposure

Sixty sub-exposures each 3 minutes long taken at ISO800

Location

Isle of Colonsay

Target name

B33

Title

B33 - The Horsehead Nebula

About this image

Equipment used:- Stock Canon 40D with 200mm f/2.8 lens stopped down to f/4 mounted piggy-back on Meade LX-90 8" telescope fitted to its field tripod by an equatorial wedge. Telescope polar aligned. LX-90 Periodic Error Correction enabled. Dew Removal straps fitted to telescope and camera lens and operating. Telescope driven but unguided. Telescope and camera powered by Mains Power.

Exposure details:- Sixty sub-exposures each 3 minutes long taken at ISO800. Ambient temperature minus 8 degrees Celsius.

Processing details:- After quality control 43 sub-exposures calibrated with Dark, Flat-field and Bias master frames before being combined in Images Plus. Image then further processed in Photoshop CS5 and Noise Ninja. Image rotated so that North is to the left. Image cropped to give field of view of 3.5 degrees x 2.4 degrees.

Narrative description:- Seven days after New Moon and that Moon was obscured behind a hill before imaging commenced. The weather was cold, clear and calm with almost no dew; however the dew that was present turned immediately to ice and frost. The imaging run was brought to a close when a small tree in my garden started to encroach into the camera field of

Files associated with this observation

MButcherNGC2024&IC434&B33.jpg (322.6 kB)

Like this image

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of work by third parties is expressly forbidden without the consent of the copyright holder. By submitting images to this online gallery, you grant the BAA permission to reproduce them in any of our publications.

Registered charity no. 210769
Registered company no. 117572

For more information including contact details, click here.

Our Terms of Use are here.

Our Privacy Policy is here.