Niels Noordhoek's weblog » Meade 6″ Newton http://www.njnoordhoek.com Fri, 02 Nov 2012 07:20:05 +0000 en-US hourly 1 http://wordpress.org/?v=3.4.2 Lunar eclipse … at last! http://www.njnoordhoek.com/?p=80 http://www.njnoordhoek.com/?p=80#comments Sun, 04 Mar 2007 00:06:39 +0000 admin http://www.njnoordhoek.com/?p=80 After the rain was gone, the sky was very clear. I was really pleased with the sight through the telescope: a soft “salmon red” colored moon with a white rim, embedded in bright white sparkling stars.

Taken at 00h29m25s CET, note the magnitude 10 star visible in the lower right.

ISO800, 10s, roughly f/10 (N6+2x Barlow)

This exposure time makes clear that the eclipsed moon is roughly 16000 times dimmer than the normal full moon. (Based on the “sunny 16″ rule: shutter time is equal to iso number @ f/16 for sun lit object, so at iso800 one would expect about 1/1600 second shutter time for f/10).dsc_0423-crop.jpg

And a wider field of view, including the stars (added from HNSky) as they were visible through the telescope:
hnsky.jpg

]]> http://www.njnoordhoek.com/?feed=rss2&p=80 0 Lunar eclipse http://www.njnoordhoek.com/?p=74 http://www.njnoordhoek.com/?p=74#comments Sat, 03 Mar 2007 22:32:23 +0000 admin http://www.njnoordhoek.com/?p=74 Just managed to het this photo before the clouds came in which made it a “more than total” eclipse of the moon.

3/3/2007 23:20:08 CET

dsc_0406-processed.jpg

The exact moment in HNSky:

23h201.jpg

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