Observation by Martin Butcher: NGC 1502 leading to Kemble,s Cascade

Uploaded by

Stuart Morris

Observer

Martin Butcher

Observed

2012 Sep 22 - 02:57

Uploaded

2021 Mar 17 - 20:05

Objects

NGC1502

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Constellation

Camelopardalis

Field centre

RA: 03^h57^m
Dec: +63°00'
Position angle: -1°16'

Field size

3°37' × 2°26'

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 driven but unguided.
Telescope and camera powered by Mains Power.
Stock Canon 40D with 200mm f/2.8 lens stopped down to f/4

Exposure

Twenty sub-exposures each 30 seconds long taken at ISO1600.

Location

Isle of Colonsay

Target name

Kemble's Cascade

Title

NGC 1502 leading to Kemble,s Cascade

About this image

Kemble's Cascade contains about 20 stars nearly in a row, stretching over five times the width of a Full Moon

Processing details:- After quality control 19 sub-exposures calibrated with Dark, Flat-field and Bias master frames before being combined in Images Plus. This image was then further processed in Photoshop CS5 and Noise Ninja. North is at the top. Image has been cropped to give a field of view 4.8 x 3.2 degrees.

Narrative description:- Six 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. There were occasional slight breezes from the north north east (the telescope was set up to the south west of my house).

Files associated with this observation

Kemble'sCascade.jpg (86.7 kB)

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