Vern’s Weblog

The moon last evening at lunation 10.43, 11:50 pm MDT. The skies didn’t look promising last evening, it was mostly cloudy and light rain fell around 9. However, the skies cleared around 10:30 pm so I set up the scope to take a look at Sinus Iridium (the crescent shape near the left top in the below photo). Actually Sinus Iridium or the “Bay of Rainbows” is half of a 162 mile (260 km) wide impact crater whose southeastern side has disappeared.

Image taken with Celestron Nexstar11 telescope, F6.3 focal reducer, and Canon Xti camera (ISO 400, 1/500 sec shutter). Sky was mostly clear, temperature 58° F, turbulence between 5 and 6/10, no wind, transparency quite good, but dew and high humidity. Location was Louisville, CO. Images aligned and stacked with Registax4 (17/40 images, wavelet filters (12,8,1,1,1,1). Cropped, enhanced, unsharped mask with Photoshop Elements2.

And here is a view of Sinus Iridium through the Phillips Toucam at cassegrain focus on the Nexstar11.

This entry was posted on Sunday, May 27th, 2007 at 1:52 pm and is filed under Astronomy, Lunar. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.