... Home Articles Observing Resources for Amateur Astronomers ? Part 1: Beginning Observers Observing Resources for Amateur Astronomers ? Part 2: Intermediate Observers . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . Observing Resources for Amateur Astronomers - Part 3: Advanced Observers . Observing Resources for Amateur Astronomers - Part 4: Magazines and Miscellany . ...

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• Observing Resources for Amateur Astronomers ? Part 4: Magazines and Miscellany
• Mike Naideau Gallery ? Amateur Astronomers Association of New York
• Untitled ? Amateur Astronomers Association of New York

Astronomy Discussion Forums . Forums: . ... Messier Marathon 2005 . ... Post Message | ... I was pretty dissapointed but decided to go up the mountain anyway just to talk with some fellow astronomers. ... It was a lot brighter than I thought it would be, but I was just amazed I could even find it. ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Observation_reports Discussion Forum - Hosted by The Astronomy Net
• Meade ETX, A Telescope For The Masses. - an Astronomy Net Article
• NOVAC Newsletter - Reflections On 1982 - an Astronomy Net Article

... The analysis of NICMOS polarization images is aimed at determining the Stokes' Parameters, and from those the polarization angle and degree for each pixel. NICMOS Camera 1 and Camera 2 each contain three polarizers, whose principal axes of transmission are separated by 120 degrees. ... The images in the three filters need to be compared, in order to produce the Stokes' parameters. ... The Stokes parameters can then be combined to yield the polarized intensity, I p: . ...

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• DrizzlePac: Examples
• DrizzlePac: Example 7
• David R. Law: Astronomy Links

... Let be a random deviate which follows a Poissonian probability distribution about the expectation value . Although the Poisson distribution itself is only defined for integer , one can find the following continuous `envelope function' to the Poisson values: . ... where is the gamma function . ... The expectation value of is . ... Equation 5 is used both in the present program and in boxdetect to estimate the null-hypothesis probability distribution of the weighted sum of Poissonian images. ...

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• XMM-Newton Science Analysis System: Main Page
• Change history
• XMM POS Summary for rev: 2102

MAIN PAGE . ... LINKS . ... AAL Members Sites . ... Amateur Astronomy . ... Mars Missions . Observatories Telescopes . ... astronomylinks.com. - astronomy and space links, shortcuts, favorites and bookmarks . ... Mel Bartels' Homepage about Amateur Telescope Making and a lot of interesting links (thx to Hugues Laroche for the link!) ... STEREO (Solar TErrestrial RElations Observatory) consists of two space-based observatories - one ahead of Earth in its orbit, the other trailing behind . ...

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... These images were provided to Winer Observatory by Mike Shade of Sonoita Hills Observatory as an example of the outstanding work done by local Sonoita amateur astronomers. ... All images on this page were taken with a 6-inch Astro-Physics aprochromatic refractor at Sonoita Hills Observatory using an SBIG ST-7 camera. ... Object: Galaxy Messier 100 . ... Date: March 2001 . ... All images on this page were taken with an f/5 Newtonian reflector at Sonoita Hills Observatory using an SBIG ST-7 camera. ...

187. Apache API notes