C2A - Planetarium Software - Astrosurf
WEBC2A (Computer Aided Astronomy) is a Planetarium software that allows you to build detailed views of stellar fields.It is only available for the Microsoft Windows Operating System (all versions). An important objective of this software is to take into account the main catalogues available to professional and amateur astronomers in order to prepare observations on small fields as well as ...
Eugénio Conceição Silva (1903/1969) - Astrosurf
WEBASTROPHOTOGRAPHY BY EUGÉNIO CONCEIÇÃO SILVA (1903/1969) CD-Rom. This CD-Rom contains the majority of Silva's astrophotographs. Image files and Text files were included into several directories on the CD-ROM: ASTRO- Subdirectories ATLASJPG and ATLASGIF include all the astrophotographs. All images …
How does a radio telescope work? - Astrosurf
WEBVery often, amateur radio telescopes will keep the direction of the antenna fixed along the north-south line, or meridian. The antenna is adjusted in elevation to a given angle and the cosmic radio source allowed to pass through the antenna beam as the Earth rotates. This is called a meridian drift scan observation.
NGC 6769 Trio - astrosurf.com
WEBNGC 6769 (upper right), NGC 6770 (upper left) and NGC 6771 (below) Object type. Interacting galaxy trio. Coordinates. 19 h 19 min - 60° 31' (Pavo) Description. Located towards the far southern constellation of Pavo (the Peacock), this cosmic tango is happening 190 million lightyears away. While NGC …
Wellbrook ALA 1530 active magnetic loop review - Astrosurf
WEBThe magnetic loop displays a very wide frequency response requiring no antenna tuning. The ALA 1530 displays a relatively flat response in the frequency ranging from 500 kHz to 30 MHz and matches directly to the receiver without having to adjust the impedance. The impedance machting in not required - it is even forbidden with a receive antenna ...
WEB1Plus 1.8-2 MHz with 160-meter option. 2Receive range extends beyond the transmit range but performance there is not specified. 3Special settings for battery-powered operation can be engaged that reduce the receive current requirement to 153 mA. 4Refer to the IF/audio response data for the actual filter bandwidth.
NGC 7009 - Saturn Nebula - Astrosurf
WEBNGC 7009, the Saturn nebula, PLN 37-34.1, Bennett 126. Object type. Planetary nebula. Coordinates. 21 h 00 min - 11° 21'. Constellation. Aquarius (Aqr) Description. This very bright (mag 8) planetary nebula shows a very intricate structure and two short equatorial rays or 'ansae' with reddish, almost stellar condensations at the ends.
From dB to S-point : L earn to play with power units - Astrosurf
WEBA power ratio : dB = 10 Log P 2 /P 1. A voltage ratio : dB = 20 Log V 2 /V 1. If a stage offers a voltage gain of 30, followed with another stage having a voltage gain of 10, the system will have a total voltage gain of 30 x 10 = 300. or, expressed in decibels (2d formula) : 29.5 + 20 = 49.5 dB. dB and S-point.
Astrosurf - Astronomie
WEBAstrosurf est un site pour les astronomes amateur, totalement dédié à la pratique de l'Astronomie.
Astronomical Eyepieces - Astrosurf
WEBASTRONOMICAL EYEPIECES. Carl Zeiss Eyepiece (14 mm) Orthoscopic. Carl Zeiss Eyepiece (15 mm) Orthoscopic. Celestron Eyepiece (6 mm) Plossl. Carl Zeiss Eyepiece (15 mm) Orthoscopic. Celestron Eyepiece (7.5 mm) Plossl. Celestron Eyepiece (10 mm) Plossl. Celestron Eyepiece (12 mm) Orthoscopic.