Observation by Alan Thomas: M105 and friends in Leo

Uploaded by

Alan Thomas

Observer

Alan Thomas

Observed

2024 Nov 10 - 04:45

Uploaded

2024 Dec 07 - 15:17

Objects

M105
NGC3384
NGC3389

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Constellation

Leo

Field centre

RA: 10^h48^m
Dec: +12°34'
Position angle: +179°03'

Field size

0°28' × 0°28'

Equipment

42cm CDK17 corrected Dall-Kirkham f/6.8
ProLine KAF-09000 camera
10Micron GM4000 mount

Exposure

3min.

Location

Observatorio del Teide, Tenerife

Target name

M105 and friends in Leo

Title

M105 and friends in Leo

About this image

This COAST image shows M105 (left), NGC3384 (lower right) and the much fainter NGC3389 (upper right).

M105 is an elliptical galaxy and was discovered by Pierre Méchain in March 1781. It was added to the Messier Catalogue by the remarkable Helen Sawyer Hogg in 1947. Distance c.32million ly, diameter c.54,000ly, apparent mag. 10.2.

NGC3384 is a lenticular galaxy. It was discovered by William Herschel in March 1784. Distance c.35million ly. apparent mag. 10.9, size c.55-60,000ly.

NGC3389 is a spiral galaxy. It was discovered by William Herschel in March 1784. Distance c.75million ly. apparent magnitude 12.4, size c.50,000ly.

M105 and NGC3384 are members of the Leo 1 galaxy group.

Files associated with this observation

NGC3384 M105 COAST v3image-jpeg-i.jpeg (359.6 kB)

Like this image

Simon Paul Davis, David Basey, Callum Potter

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