Observation by Martin Butcher: NGC2261, NGC2264, IC2169 and TRUMPLER 5

Uploaded by

Stuart Morris

Observer

Martin Butcher

Observed

2012 Dec 18 - 04:47

Uploaded

2021 Apr 06 - 13:27

Objects

Hubble's Variable Nebula (NGC2261)
The Christmas Tree Cluster (NGC2264)
IC2169

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Constellation

Monoceros

Field centre

RA: 06^h39^m
Dec: +09°46'
Position angle: -1°46'

Field size

6°31' × 4°20'

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

Ninety two sub-exposures each 30 seconds long taken at ISO1600.

Location

Isle of Colonsay

Target name

NGC2261

Title

NGC2261, NGC2264, IC2169 and TRUMPLER 5

About this image

Equipment used:- Stock Canon 40D with 200mm f/2.8 lens wide open 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:- Ninety two sub-exposures each 30 seconds long taken at ISO1600. Ambient temperature was minus 3 degrees Celsius.

Processing details:- After quality control 81 sub-exposures calibrated with Dark, Flat-field and Bias master frames before being combined and processed in Images Plus. Noise reduction was performed in Photoshop CS5. North is at the top. Image has a field of view of 6.3 x 4.2 degrees.

Narrative description:- Five days after New Moon, the Moon had already set before imaging commenced. The weather was cold; clear with moderate dew that gradually worsened as the night went on. This was an attempt to record NGC2264 and the Cone Nebula. These can, just about, be seen; in addition, NGC2261 (Hubble’s Variable Nebula), the reflection nebula IC2169 and the loose cluster Trumpler 5 are all shown.

Files associated with this observation

MButcherNGC2261, NGC2264, IC2169 and Trumpler 5.jpg (878.1 kB)

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