Galactic [open] cluster; NGC2632; Praesepe; The Beehive Cluster.
RA 08:40.1; Dec. +19:59; Distance 577 light years;
Visual Brightness 3.7m; Apparent Dimension 95.0 (arc min).
Source and more: SEDS
In Sky & Telescope, March 2003, pages 120-121, you can read a nice article about M44.
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First light for my [unmodified] Canon EOS 1000D DSLR camera. January 14, 2010 22:12 - 22:54 UT. Imaging: William Optics Zenithstar 80 ED II APO with William Optics 0.8 Focal reducer operating at f/5.4 [focal length approx 435mm] and Canon 1000D DSRL [unmodified] with Astronomik CLS clip filter. Exposures: 15x120s [RAW]; ISO 400, unguided. Darks and bias subs, no flats. Imaging: Live View focusing with Movrec and captured with EOS Utilities. Post processing: Deep Sky Stacker and Photoshop. Note: the spikes are caused by my diffraction spikes mask, which I forgot to remove ... |
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March 20, 2009 19:30 - 20:29 UT. Imaging: 135mm SLR Photolens with ATK16IC camera and Astronomik LRGB filters. Exposures: L: 12x210s [1x1]; RGB: 5x60s [2x2]; all unguided. |
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February 11, 2008 20:28 - 21:12 UT. Imaging: 135mm SLR Photolens with ATK16IC camera and Astronomik LRGB filters. Exposures: L: 10x90s [1x1]; RGB: 5x30s [2x2]; all unguided. |
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January 27, 2006 21:29 - 21:32 UT. Saturn is visiting M44. Imaging details: 135mm SLR Photolens, Vesta Pro SC3a colour, Baader Infra Red Blocking filter |
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February 6, 2005 21:36 - 21:42 UT. Imaging details: 135mm SLR Photolens, Vesta Pro SC3a colour, Baader Infra Red Blocking filter |
, post processing in Registax and histogram adjustment in Photoshop. Seeing: 7/10.'))
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March 31, 2003 22:02 UT Jupiter is closing in on M44. 135 mm SLR Photolens @ F/5.6; 20 frames of 90 seconds exposure. |
, YRGB post processing. Seeing: 7/10.'))
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March 31, 2003 21:10 UT Jupiter is approaching. 135 mm SLR Photolens @ f/5.6; 13x12.5 seconds exposure. YRGB processing. |
, YRGB post processing. Seeing: 8/10.'))
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March 30, 2003 20:21 UT The rays are from the approaching Jupiter, which is just off page. 135 mm SLR Photolens; 15 frames of 60 seconds exposure. YRGB processing. |
, post processing in Registax and histogram adjustment in Photoshop. Seeing: 8/10.'))
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, post processing in Registax and histogram adjustment in Photoshop. Seeing: 8/10.'))
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March 30, 2003 19:37 and 19:49 UT Jupiter is approaching. 135 mm SLR Photolens; comparison of f/4 with 7x11 seconds exposure and f/5.6 with 20x15 seconds exposure. |
, post processing in Registax and histogram adjustment In Photoshop. Seeing: 6/10: I had to stop imaging because of incoming clouds.'))
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March 09, 2003 20:09 _ 20:13 UT. 135 mm SLR Photolens; 6 frames of 35 seconds exposure. |
, post processing in Registax. Seeing: 8/10.'))
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March 06, 2003 22:06 - 22:23 UT. 2x 35 mm SLR Photolens; 18 frames of 60 seconds exposure. |
, post processing in Registax. Seeing: 6/10.'))
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March 03, 2003 20:15- 20:41 UT. 2x 35 mm SLR Photolens; 50 frames of 25 seconds exposure. |
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