Related images: Planetary Grouping
Archive for February, 2012
Reposted from the UP Astronomical Society Website:
Come and visit us at PAGASA’s Open House on February 22 at 6:45pm! Get to see what the sky has to offer with the COUNTRY’S LARGEST TELESCOPE named “Andre the Giant”.
The Gallia asteroid occultation expedition last October 2010 is research project in collaboration with NASA Johnson Space Center Astronomical Society, the International Occultation Timing Association, and the Philippine Astronomical Society. For the full observation report, click here.
I find Barlow lenses very useful in achieving better image scale in planetary imaging (through afocal, prime focus, or eyepiece projection). Using a 2x Barlow lens, I can actually double the effective focal length of my setup. With a 2x Barlow, the effective focal length of my 900 mm telescope would then be equal to 900 mm X 2 = 1800 mm. During nights of steady seeing and I wish to further magnify an image, I use another 2x Barlow, thereby having an effective focal length of 900 mm X 2 X 2 = 3600 mm :)
Image of Venus taken last February 3, 2012 at the Manila Observatory Roofdeck, captured using a 4-in f/9 refractor and a Logitech 4000 web camera with 2x Barlow at prime focus. The planet Venus is now on its gibbous phase. Photo Credit: Anthony Urbano