srijeda, 07.12.2011.
BANDPASS FILTER IC : FILTER IC
BANDPASS FILTER IC : WEB FILTER BLOCK PAGE : PROXY BARRACUDA WEB FILTER.
Bandpass Filter Ic
- An electric circuit designed to pass only middle frequencies.
- A filter that attenuates signals both below and above the desired passband.
- A band-pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range. An example of an analogue electronic band-pass filter is an RLC circuit (a resistor–inductor–capacitor circuit).
- Internal combustion
- Integrated circuit
- Intensive care
- IntercomPlus is the name of the Walgreen Company's proprietary computer system. Originally founded as Intercom in 1981, it was the first large scale retail computer system .
- ninety-nine: being nine more than ninety
- Intelligence Community: a group of government agencies and organizations that carry out intelligence activities for the United States government; headed by the Director of Central Intelligence
Cygnus Hydrogen Alpha
This is a Hydrogen Alpha image of the constellation Cygnus which lies in the plane of our Milky Way. A Hydrogen Alpha filter was used to counteract the skyglow which is ever present this time of year in Northern latitudes and allowed longer exposures to be taken without washing out the background by only allowing a narrow 12nm bandpass at 656nm.
10 exposures of 8 minutes each @ ISO 1600 24mm f2.8 stacked in DSS.
Needs a load more data to smooth out the noise and go deeper but I'm hoping to add to this by adding luminance channels to bring out colour and possibly mozaic it with further images stretching to Casseopia.
Canon 20Da, Ha Clip Filter, Astrotrac mounting.
IC410
Canon DSLR 450d, modified,
1600ASA, 48x5 min = 4hours, 20 Darkframes
6" Starfire refractor, 1100 mm with 0.8x reducer/flattener
Astronomik, H-alpha bandpass filter, 12nm
See also:
foam filter media for 140 190 fountain barrel kits
mobil 1 extended performance oil filter
polarizer filter test
sponge filters for fish tanks
hayward perflex pool filter
installing under sink water filter
champion motorcycle oil filters
trane electronic air filter