Showing posts with label Comet Lulin. Show all posts
Showing posts with label Comet Lulin. Show all posts
Friday, March 13, 2009
Getting ready for "Opening Night"
We were supposed to have our first Open Night of the year at Stephens Memorial Observatory last weekend. Threatening and thickening clouds, however, put a stop to that. Since it was to be our official International Saturn Observation Campaign event, it was one of the rare occasions where we announced a "rain date." That date is tomorrow. The weather forecasts have been changing as the weekend approaches and now, from forecaster to forecaster, the expectation is something between mostly clear to mostly cloudy. Tonight, however, is cloudless and beautiful even in our light-polluted suburb. I can only imagine how beautiful it is under dark skies. I had nice views of Orion, the Pleiades, M44 - "The Beehive" but no trace of little Comet Lulin. I've been studying the charts and ducking outside with binoculars to become acquainted with the night sky as it presents itself these times. It has been a long while since we've had a passably clear night and tolerable temperatures (it's 30 F degrees). With luck we'll have clear weather tomorrow (Saturday) night and get a very nice view of Saturn, the great Orion Nebula, and some star clusters. All we can do is wait and see what kind of sky conditions come our way.
Monday, February 23, 2009
Seeking Comet Lulin
It is an unexpected clear night, and it is cold: 17 degrees (F). Between the temperature, recent snows, and being tired it did not make a lot of sense to either set up a telescope (in my situation*) or drive to the Observatory to look for the green comet Lulin (C/2007 N3). I did want to see it, however, and it would be easy to spot since bright Saturn and Lulin were to be very near each other in the sky.
Even with a relatively clear sky the light pollution of our suburban area is bad. Only the brightest stars and planets were visible this night: Venus was brilliant in the twilight and for a couple of hours after sunset, as it has been all winter. Now Saturn rises at a decent hour and tonight was well above the southeastern horizon in the great constellation Leo and, due to its golden color, was easily found. Leo was difficult to make out so I'm glad I didn't depend upon it!
Standing in my winter coat and pajama bottoms --yes, it's 17 degrees-- I aimed my 10 x 50 binoculars at Saturn. The brilliant dot floated in the visual field. I couldn't make out the planetary disk but nearby, and to Saturn's south and west, was a faint, diffuse, oblong cloud -- Comet Lulin. Invisible here to the unaided eye, it's being estimated at between magnitude 5 and 6. No nucleus was visible and no color noticeable. That should not be surprising given less than ideal base sky conditions, light pollution, and the small-aperture binoculars.
Still, I saw the comet as it is passing closest to Earth. And I got out under a "clear" sky with an optical instrument for the first time in months! It has been a long, cold, snowy, and cloudy winter and I'm hoping conditions improve soon. Our first public night for the year is set for March 7 when we'll be looking at Saturn -- the rings will be edge-on this year which is a rare sight.
And maybe I'll get a better look at that little green fuzz-ball Lulin. You never know!
* I've only purchased equatorial, tripod-mounted refractors til now. For occasions like this, however, a nice Dobsonian-mounted reflector would be great as a grab-and-go telescope. Hmmm.... is there room in my basement?
Even with a relatively clear sky the light pollution of our suburban area is bad. Only the brightest stars and planets were visible this night: Venus was brilliant in the twilight and for a couple of hours after sunset, as it has been all winter. Now Saturn rises at a decent hour and tonight was well above the southeastern horizon in the great constellation Leo and, due to its golden color, was easily found. Leo was difficult to make out so I'm glad I didn't depend upon it!
Standing in my winter coat and pajama bottoms --yes, it's 17 degrees-- I aimed my 10 x 50 binoculars at Saturn. The brilliant dot floated in the visual field. I couldn't make out the planetary disk but nearby, and to Saturn's south and west, was a faint, diffuse, oblong cloud -- Comet Lulin. Invisible here to the unaided eye, it's being estimated at between magnitude 5 and 6. No nucleus was visible and no color noticeable. That should not be surprising given less than ideal base sky conditions, light pollution, and the small-aperture binoculars.
Still, I saw the comet as it is passing closest to Earth. And I got out under a "clear" sky with an optical instrument for the first time in months! It has been a long, cold, snowy, and cloudy winter and I'm hoping conditions improve soon. Our first public night for the year is set for March 7 when we'll be looking at Saturn -- the rings will be edge-on this year which is a rare sight.
And maybe I'll get a better look at that little green fuzz-ball Lulin. You never know!
* I've only purchased equatorial, tripod-mounted refractors til now. For occasions like this, however, a nice Dobsonian-mounted reflector would be great as a grab-and-go telescope. Hmmm.... is there room in my basement?
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