Tuesday, 8 November 2011

Messier 76. A Planetary nebula in Perseus.

At this time off the year, Perseus is riding high in the North East.

It is a constellation, full off interesting deep sky object's to see. Both visually and image.

On the evening of Sunday 6th November. I was fortunate to have a clear sky, but the Moon was so bright. 

So- I decided to try a spot of narrowband imaging.

My choice was the Little Dumbbell nebula.

This is an interesting nebula. And it is known by too names. The Cork, and Barbell Nebula.

It was discovered by Mechain in 1780, and included in Messier's catalogue as no 76.

M76 is faint, and some sources quote M76, as magnitude 12.1, whilst other's give a value near magnitude 10.

It is there for, quite an easy subject visually, for modest aperture telescope's.

The size of M76 is. 2.7 x 1.8 arcmin. Whilst its distance is 780pc or 2,500ly.

This picture was captured over a period of just under two hour's. And has been combined from fifty-five times two-minute exposure's.

I was using an Astronomik 13nm Hydrogen Alpha filter, attached to my Atik 16ic CCD camera. Which was attached to my Orion Optics 200-800 F4 imaging Newtonian. The guiding was undertaken with a QHY5 and Willam Optics ZS66sd, and PHD software. All this is attached to a Losmandy G11-Gemini L4
.

I hope to gather more data, using longer exposure's once the Moon is in the morning sky. 

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