M45  The PleiadesHome

Seven Sisters The Seven Sisters.  Move your mouse over the image to see their names.  Atlas and Pleione are the parents of the severn sisters.  The seventh sister, Asterope, is rather faint and does not show well on the original picture so I have increase the gamma of the mouseover image to 1.6 in oder to make it more visible.  All the sisters are clearly visible on the picture below.

Date and Time: 31st August 2004 01:23 UT
Camera: Modified Vesta 675K
Telescope: 58 mm SLR lens
Capture: K3CCDTools. High gamma, 2", 55% gain
Processing: K3CCDTools. 10 frames stacked
Pleiades And here with some of their friends and relatives.

Date and Time: 31st August 2004 01:23 and 01:30 UT
Camera: Modified Vesta 675K
Telescope: 58 mm SLR lens
Capture: K3CCDTools. High gamma, 5", 55% gain
Processing: K3CCDTools. 10 frames stacked
And here being visited by the Moon.  (Notice that the dark side of the Moon is faintly visible.)

Date and Time: 7th August 2007 01:40 UT
Camera: Modified Toucam 840K
Telescope: 58 mm SLR lens f/2.8
Capture: K3CCDTools. High gamma, 1/25, 22% gain
Processing: K3CCDTools. 454 frames stacked, unsharp mask 3,0,100
This picture was taken with my new Atik 16ic colour camera.  This produces a larger picture of greater depth than the webcams, so this picture has been reduced to 64% to match the pictures above.  Click on the image to see the full-size picture and use the back button to return here.

Date and Time: 10th February 2008 18:44 to 18:57 UT
Camera: Atik 16ic colour
Telescope: 58 mm SLR lens f/4
Capture: K3CCDTools. ArtemisCapture
Processing: K3CCDTools. 13 frames stacked, histogram 75-255, unsharp mask 1,0,250
The stars of M45 are well known to be embedded in a faint, blue nebulosity.  I have not until now managed to capture it.  Even here I have not captured the fainter parts.
If you move your mouse pointer over the image you will see the original picture reduced to size and clipped to fit the page.

Date and Time: 26th January 2012 22:33 UT
Camera: Canon 1000D
Telescope: Canon EF70-300 lens set to a focal length of 300 mm
Capture: 120 seconds at f/5.6
Processing: PhotoImpact. Removal of background light polution, gamma 1.8, Gaussian blur 3 pixels, trimmed and reduced.
And here is a wider-angled view taken with the same camera but with a 70-mm lens This picture is a stack of 16 pictures.
If you move your mouse pointer over the image you will see a version with the gamma increased to 2.0 which brings out the nebulosity around the stars in this cluster.

Date and Time: 21st December 2016 18:26 to 18:36 UT
Camera: Canon 1100D
Telescope: Canon EF70-300 lens set to a focal length of 70 mm
Guided via a 400-mm (fl) refractor
Capture: 30 seconds at f/5.6
Processing: RegiStax5 stacking all images without alignment
                  PhotoImpact removal of background, reduction to fit this page,
                  gamma 1.3 to compensate for the reduction, and gamma 2.0 for the mouseover.
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